Merge pull request #454 from ProjectRevoTPP/ewram

ewram refactor

85 files changed, 996 insertions, 988 deletions

diff --git a/Makefile b/Makefile
index f471a1626..a42a06898 100644
--- a/Makefile
+++ b/Makefile
@@ -161,7 +161,7 @@ build/$1/ld_script.ld: ld_script.txt build/$1/sym_bss.ld build/$1/sym_common.ld
 	cd build/$1 && sed -f ../../ld_script.sed ../../ld_script.txt | sed "s#tools/#../../tools/#g" | sed "s#sound/#../../sound/#g" >ld_script.ld
 
 poke$1.elf: build/$1/ld_script.ld $$($1_OBJS)
-	cd build/$1 && $$(LD) -T ld_script.ld -T ../../shared_syms.txt -Map ../../poke$1.map -o ../../$$@ $$($1_OBJS_REL) ../../$$(LIBGCC)
+	cd build/$1 && $$(LD) -T ld_script.ld -Map ../../poke$1.map -o ../../$$@ $$($1_OBJS_REL) ../../$$(LIBGCC)
 
 poke$1.gba: %.gba: %.elf
 	$$(OBJCOPY) -O binary --gap-fill 0xFF --pad-to 0x9000000 $$< $$@
diff --git a/asmdiff.sh b/asmdiff.sh
index a4b465b6e..a4b465b6e 100644..100755
--- a/asmdiff.sh
+++ b/asmdiff.sh
diff --git a/data/credits.s b/data/credits.s
index fe82968c0..72a7b22ac 100644
--- a/data/credits.s
+++ b/data/credits.s
@@ -120,11 +120,11 @@ gSpriteAnimTable_0840CA94:: @ 840CA94
 
 
 gUnknown_0840CAA0:: @ 840CAA0
-	obj_tiles gHallOfFame, 6144, 1001
+	obj_tiles 0x201E000, 6144, 1001 @ can't believe im making this a pointer again... this should be eHallOfFame, when represented in the original C file again. Please fix this by migrating data/credits.s to credits.c.
 	null_obj_tiles
 
 gUnknown_0840CAB0:: @ 840CAB0
-	obj_pal unk_201f800, 1001
+	obj_pal 0x201F800, 1001 @ same as above. When this is in credits.c, it will be able to proper see its definition in ewram.h, which is EWRAM_1F800.
 	null_obj_pal
 
 	.align 2
diff --git a/include/battle.h b/include/battle.h
index dc9ac93cc..d576e92f4 100644
--- a/include/battle.h
+++ b/include/battle.h
@@ -189,9 +189,6 @@ enum
     BATTLE_TERRAIN_PLAIN,
 };
 
-// needed to match the hack that is get_item, thanks cam, someone else clean this up later.
-extern u8 unk_2000000[];
-
 struct Trainer
 {
     /*0x00*/ u8 partyFlags;
@@ -237,7 +234,11 @@ struct AI_ThinkingStruct /* 0x2016800 */
 
 struct BattleStruct /* 0x2000000 */
 {
-    u8 filler0[0x15DDE];
+    /*0x00000*/ u8 unk0;
+    /*0x00001*/ bool8 unk1;
+    /*0x00002*/ u8 unk2;
+    /*0x00003*/ bool8 unk3;
+    u8 filler4[0x15DDA];
     /*0x15DDE*/ u8 unk15DDE;
     /*0x15DDF*/ u8 unk15DDF;
     /*0x15DE0*/ u8 filler15DE0[0x220];
@@ -533,6 +534,21 @@ struct BattleResults
     u8 unk36[10];  // usedBalls?
 };
 
+struct Struct2017100
+{
+    u32 arr[4];
+};
+
+struct Struct2019348
+{
+    u16 unk0;
+    u16 unk2;
+    u8 unk4;
+    u32 unk8;
+    u32 unkC;
+    u32 unk10;
+};
+
 struct Struct2017800
 {
     u8 invisible:1;
@@ -545,25 +561,25 @@ struct Struct2017800
 
 struct Struct2017810
 {
-    u8 unk0_0:1;
-    u8 unk0_1:1;
-    u8 unk0_2:1;
-    u8 unk0_3:1;
-    u8 unk0_4:1;
-    u8 unk0_5:1;
-    u8 unk0_6:1;
-    u8 unk0_7:1;
-    u8 unk1_0:1;
-    u8 unk1_1:5;
-    u8 unk2;
-    u8 unk3;
-    u8 unk4;
-    u8 unk5;
-    u8 unk6;
-    u8 unk7;
-    u8 unk8;
-    u8 unk9;
-    u8 fillerA[2];
+ /*0x00*/ u8 unk0_0:1;
+ /*0x00*/ u8 unk0_1:1;
+ /*0x00*/ u8 unk0_2:1;
+ /*0x00*/ u8 unk0_3:1;
+ /*0x00*/ u8 unk0_4:1;
+ /*0x00*/ u8 unk0_5:1;
+ /*0x00*/ u8 unk0_6:1;
+ /*0x00*/ u8 unk0_7:1;
+ /*0x01*/ u8 unk1_0:1;
+ /*0x01*/ u8 unk1_1:5;
+ /*0x02*/ u8 unk2;
+ /*0x03*/ u8 unk3;
+ /*0x04*/ u8 unk4;
+ /*0x05*/ u8 unk5;
+ /*0x06*/ u8 unk6;
+ /*0x07*/ u8 unk7;
+ /*0x08*/ u8 unk8;
+ /*0x09*/ u8 unk9;
+ /*0x0A*/ u8 fillerA[2];
 };
 
 struct Struct2017840
@@ -671,21 +687,6 @@ extern struct WishFutureKnock gWishFutureKnock;
 extern struct AI_ThinkingStruct gAIThinkingSpace;
 extern struct Struct20238C8 gUnknown_020238C8;
 
-// TODO: move ewram to global.h
-extern u8 ewram[];
-
-#define BATTLE_STRUCT           ((struct BattleStruct *)     (ewram + 0x00000))
-#define AI_THINKING_STRUCT      ((struct AI_ThinkingStruct *)(ewram + 0x16800))
-#define UNK_2016A00_STRUCT      ((struct UnkBattleStruct1 *) (ewram + 0x16A00))
-#define AI_STACK                ((struct AI_Stack *)         (ewram + 0x16C00))
-#define AI_ARRAY_160CC          ((struct SmallItemStruct *)  (ewram + 0x160CC))
-#define B_BATTLESCRIPTS_STACK   ((struct scriptsStack *)     (ewram + 0x17110))
-#define B_FUNCTION_STACK        ((struct funcStack *)        (ewram + 0x17140))
-#define ewram17800              ((struct Struct2017800 *)    (ewram + 0x17800))
-#define ewram17810              ((struct Struct2017810 *)    (ewram + 0x17810))
-#define ewram17840              (*(struct Struct2017840 *)   (ewram + 0x17840))
-#define ewram17000              ((u32 *)                     (ewram + 0x17100))
-
 // used in many battle files, it seems as though Hisashi Sogabe wrote
 // some sort of macro to replace the use of actually calling memset.
 // Perhaps it was thought calling memset was much slower?
diff --git a/include/battle_anim.h b/include/battle_anim.h
index 3db5ae967..d807a582a 100644
--- a/include/battle_anim.h
+++ b/include/battle_anim.h
@@ -7,12 +7,6 @@
 #define REG_BG1CNT_BITFIELD REG_BGnCNT_BITFIELD(1)
 #define REG_BG2CNT_BITFIELD REG_BGnCNT_BITFIELD(2)
 
-#define EWRAM_14800 ((u16 *)(unk_2000000 + 0x14800))
-#define EWRAM_17800 ((struct UnknownStruct1 *)(unk_2000000 + 0x17800))
-#define EWRAM_17810 ((struct UnknownStruct3 *)(unk_2000000 + 0x17810))
-#define EWRAM_18000 ((u16 *)(unk_2000000 + 0x18000))
-#define EWRAM_19348 (*(u16 *)(unk_2000000 + 0x19348))
-
 struct BGCntrlBitfield
 {
     volatile u16 priority:2;
diff --git a/include/battle_party_menu.h b/include/battle_party_menu.h
index 200b0c653..d7ad53eed 100644
--- a/include/battle_party_menu.h
+++ b/include/battle_party_menu.h
@@ -1,9 +1,6 @@
 #ifndef GUARD_BATTLE_PARTY_MENU_H
 #define GUARD_BATTLE_PARTY_MENU_H
 
-extern u8 unk_2000000[];
-#define EWRAM_1609D unk_2000000[0x1609D]
-
 void HandleBattlePartyMenu(u8);
 bool8 SetUpBattlePartyMenu(void);
 
diff --git a/include/decoration.h b/include/decoration.h
index 70abc29bf..8c651f967 100644
--- a/include/decoration.h
+++ b/include/decoration.h
@@ -204,9 +204,6 @@ struct UnkStruct_803EC860
 
 extern const struct UnkStruct_803EC860 gUnknown_083EC860[];
 
-extern u8 ewram[];
-#define ewram_1f000 (*(struct DecoPCPointers *)(ewram + 0x1f000))
-
 struct UnkStruct_02038900
 {
     /*0x000; 0x02038900*/ const struct Decoration *decoration;
diff --git a/include/dewford_trend.h b/include/dewford_trend.h
index 26075d633..c12d0d740 100644
--- a/include/dewford_trend.h
+++ b/include/dewford_trend.h
@@ -1,9 +1,6 @@
 #ifndef GUARD_DEWFORDTREND_H
 #define GUARD_DEWFORDTREND_H
 
-#define ARRAY_2007800 ((struct EasyChatPair *)(unk_2000000 + 0x7800))
-#define ARRAY_2007900 ((struct EasyChatPair *)(unk_2000000 + 0x7900))
-
 void InitDewfordTrend(void);
 void sub_80FA4E4(void *, u32, u8);
 void UpdateDewfordTrendPerDay(u16);
diff --git a/include/ewram.h b/include/ewram.h
new file mode 100755
index 000000000..93fba80f8
--- /dev/null
+++ b/include/ewram.h
@@ -0,0 +1,227 @@
+#ifndef GUARD_EWRAM_H
+#define GUARD_EWRAM_H
+
+extern u8 gSharedMem[];
+#define ewram_addr 0x02000000 // used in gSharedMem addr hacks
+
+// Note: we have duplicate ewram labels because its clear some memory
+// regions overlap others but have different definitions. Until some
+// dupes can be determined to be the same, they will be deliberate
+// seperated.
+#define BATTLE_STRUCT                   ((struct BattleStruct *)     (gSharedMem + 0x0))
+#define ewram0_2                        (*(struct Struct2000000 *)(gSharedMem + 0x0))
+#define namingScreenData                (*(struct NamingScreenData *)(gSharedMem + 0x0))
+#define ewramBerryPic                   (gSharedMem + 0x0)
+#define ewram0_3                        (*(struct UnknownStruct3 *)(gSharedMem + 0x0))
+#define ewram0_4                        (*(struct Unk2000000 *)(gSharedMem + 0x0))
+#define ewram0_5                        (*(struct UnkStruct *)(gSharedMem + 0x0))
+#define eMatsudaDebugVar                (gSharedMem[0x0])
+#define eBrendanSprite                  (gSharedMem + 0x0)
+#define ewram0_6                        (u32)(&gSharedMem[0])
+#define ewram0_7                        (&gSharedMem[0])
+#define eSaveSection                    (struct SaveSection *)(gSharedMem + 0x0)
+#define ewram4                          (*(struct UnknownStruct8 *)(gSharedMem + 0x4))
+#define ewram520                        ((struct UnknownStruct7 *)(gSharedMem + 0x00520))
+#define eMaySprite                      (gSharedMem + 0x800)
+#define ewram888                        (gSharedMem + 0x888)
+#define ewramBlankMapName               (gSharedMem + 0xA48)
+#define ewramA6E                        (gSharedMem[0xA6E])
+#define ewram01000                      (*(struct Unk2001000 *)(gSharedMem + 0x1000))
+#define ewramBerryPicTemp               (gSharedMem + 0x1000)
+#define EWRAM_1000                      (*(struct Struct2001000 *)(gSharedMem + 0x1000))
+#define gUnk20011fa                     (u8 *)(&gSharedMem[0x11FA])
+#define gUnk2002694                     (u8 *)(&gSharedMem[0x2694])
+#define gUnk20026A6                     (u8 *)(&gSharedMem[0x26A6])
+#define gUnk20026e4                     (u8 *)(&gSharedMem[0x26E4])
+#define ewram4000                       (gSharedMem + 0x4000)
+#define gUnknown_02007000               (*(ewramStruct_02007000 *)(gSharedMem + 0x7000))
+#define ARRAY_2007800                   ((struct EasyChatPair *)(gSharedMem + 0x7800))
+#define ARRAY_2007900                   ((struct EasyChatPair *)(gSharedMem + 0x7900))
+#define ewram_2008000                   (*(struct PlayerRecords *)(gSharedMem + 0x08000))
+#define ewram8000                       (&gSharedMem[0x8000])
+#define ewram8800                       (&gSharedMem[0x8800])
+#define ewram9000                       (&gSharedMem[0x9000])
+#define ewram9000_hack                  (void *)(ewram_addr + 0x9000) // TODO: Fix this.
+#define ewram9800                       (&gSharedMem[0x9800])
+#define ewramA000                       (&gSharedMem[0xA000])
+#define ewramA800                       (&gSharedMem[0xA800])
+#define ewramB000                       (&gSharedMem[0xB000])
+#define ewramB800                       (&gSharedMem[0xB800])
+#define TRANSITION_STRUCT               (*(struct TransitionData *)   (gSharedMem + 0xC000))
+#define ewramC000                       (&gSharedMem[0xC000])
+#define ewramC03C                       (&gSharedMem[0xC03C])
+#define ewramC800                       (&gSharedMem[0xC800])
+#define ewramD000                       (&gSharedMem[0xD000])
+#define ewramD800                       (&gSharedMem[0xD800])
+#define ewramE000                       (&gSharedMem[0xE000])
+#define ewramE800                       (&gSharedMem[0xE800])
+#define ewramF000                       (&gSharedMem[0xF000])
+#define ewramF800                       (&gSharedMem[0xF800])
+#define ewram_2010000                   (*(struct TradeEwramStruct *)(gSharedMem + 0x10000))
+#define ewram10000                      (&gSharedMem[0x10000])
+#define ewram10800                      (&gSharedMem[0x10800])
+#define ewram11000                      (&gSharedMem[0x11000])
+#define ewram11800                      (&gSharedMem[0x11800])
+#define ewram13000                      (&gSharedMem[0x13000])
+#define EWRAM_14000                     ((u8 *)(gSharedMem + 0x14000))
+#define ewram14000                      (&gSharedMem[0x14000])
+#define ewram14000arr(i, data)          (gSharedMem[0x14000 + i + data])
+#define ewram14004arr(i, data)          (gSharedMem[0x14004 + i + data])
+#define ewram14008arr(i, data)          (gSharedMem[0x14008 + data + i])
+#define ewram14800                      (&gSharedMem[0x14800])
+#define EWRAM_14800                     ((u16 *)(gSharedMem + 0x14800))
+#define sEvoInfo                        ((*(struct EvoInfo*)(gSharedMem + 0x14800)))
+#define EWRAM_15000                     ((u8 *)(gSharedMem + 0x15000))
+#define ewram15000                      (&gSharedMem[0x15000])
+#define ewram15000arr(i, data)          (gSharedMem[0x15000 + data + i])
+#define ewram15800                      (&gSharedMem[0x15800])
+#define ewram15DDE                      (gSharedMem[0x15DDE])
+#define ewram15DDF                      (gSharedMem[0x15DDF])
+#define ewram15DE0                      ((*(struct ContestEntry*)(gSharedMem + 0x15DE0)))
+#define ewram15E00                      ((*(struct Unk2015E00*)(gSharedMem + 0x15E00)))
+#define ewram16000                      (gSharedMem[0x16000])
+#define ewram16001                      (gSharedMem[0x16001])
+#define ewram16002                      (gSharedMem[0x16002])
+#define ewram16003                      (gSharedMem[0x16003])
+#define ewram16004arr(i, bank)          (gSharedMem[0x16004 + i + bank * 2])
+#define ewram1600C                      (gSharedMem[0x1600C])
+#define ewram1600E                      (gSharedMem[0x1600E])
+#define ewram16010arr(bank)             (gSharedMem[0x16010 + bank])
+#define ewram1601B                      (gSharedMem[0x1601B])
+#define eDynamicMoveType                (gSharedMem[0x1601C])
+#define eDmgMultiplier                  (gSharedMem[0x1601F])
+#define ewram16020                      ((u8 *)(gSharedMem + 0x16020))
+#define ewram16020arr(i)                (gSharedMem[0x16020 + i])
+#define ewram16054                      (gSharedMem[0x16054])
+#define ewram16056                      (gSharedMem[0x16056])
+#define ewram16058                      (gSharedMem[0x16058])
+#define ewram16059                      (gSharedMem[0x16059])
+#define ewram16060(bank)                (gSharedMem[0x16060 + bank])
+#define BATTLE_PARTY_ID(bank)           (gSharedMem[0x16064 + bank])
+#define ewram16064                      (&gSharedMem[0x16064])
+#define ewram16064arr(bank)             (gSharedMem[0x16064 + bank])
+#define ewram16068arr(i)                (gSharedMem[0x16068 + i])
+#define UNK_201606C_ARRAY               (gSharedMem + 0x1606C) // lazy define but whatever.
+#define ewram1606Carr(i, a)             (gSharedMem[0x1606C + i + a * 3])
+#define ewram16078                      (gSharedMem[0x16078])
+#define ewram16084                      (gSharedMem[0x16084])
+#define ewram16086                      (gSharedMem[0x16086])
+#define ewram16087                      (gSharedMem[0x16087])
+#define ewram16088                      (gSharedMem[0x16088])
+#define ewram16088_2                    (*(u8 *)(gSharedMem + 0x16088))
+#define ewram16089                      (gSharedMem[0x16089])
+#define ewram16089_2                    (*(u8 *)(gSharedMem + 0x16089))
+#define ewram1608Carr(bank)             (gSharedMem[0x1608C + bank])
+#define EWRAM_1609D                     (gSharedMem[0x1609D])
+#define ewram160A1                      (gSharedMem[0x160A1])
+#define ewram160A6                      (gSharedMem[0x160A6])
+#define ewram160A8                      (gSharedMem[0x160A8])
+#define ewram160A9                      (gSharedMem[0x160A9])
+#define ewram160AA                      (gSharedMem[0x160AA])
+#define ewram160AB                      (gSharedMem[0x160AB])
+#define ewram160AC                      ((u8 *)(gSharedMem + 0x160AC))
+#define ewram160ACarr(i)                (gSharedMem[0x160AC + i])
+#define ewram160ACarr2(i, bank)         (gSharedMem[0x160AC + i + bank * 2])
+#define ewram160BC                      ((u16 *)(gSharedMem + 0x160BC))  // hp
+#define ewram160BCarr(bank)             (gSharedMem[0x160BC + bank * 2])
+#define ewram160C0                      (gSharedMem[0x160C0])
+#define ewram160C2_Flags                ((u16 *)(gSharedMem + 0x160C2))
+#define ewram160C4_Callback             ((MainCallback *)(gSharedMem + 0x160C4))
+#define ewram160C8                      (gSharedMem[0x160C8])
+#define ewram160C8arr(bank)             (gSharedMem[0x160C8 + (bank / 2)])
+#define ewram160C9                      (gSharedMem[0x160C9])
+#define ewram160CB                      (gSharedMem[0x160CB])
+#define ewram160CC                      ((u8 *)(gSharedMem + 0x160CC))
+#define ewram160CCarr(i)                (gSharedMem[0x160CC + i])
+#define USED_HELD_ITEM(bank)            ((((u16*)(&gSharedMem[0x160CC + bank * 2]))))
+#define USED_HELD_ITEMS(bank)           (*(u16 *)&gSharedMem[0x160CC + 2 * (bank)])
+#define ewram160D4(bank)                (gSharedMem[0x160D4 + (bank / 2) * 2])
+#define ewram160DD                      (gSharedMem[0x160DD])
+#define ewram160E0(i)                   (gSharedMem[0x160E0 + i])
+#define ewram160E6                      (gSharedMem[0x160E6])
+#define CHOICED_MOVE(bank)              (((u16*)(&gSharedMem[0x160E8 + bank * 2])))
+#define ewram160E8                      ((u8 *)(gSharedMem + 0x160E8))
+#define ewram160E8arr(i)                (gSharedMem[0x160E8 + i])
+#define ewram160E8arr2(i, bank)         (gSharedMem[0x160E8 + i + bank * 2])
+#define ewram160F0                      ((u8 *)(gSharedMem + 0x160F0))
+#define ewram160F0arr(i)                (gSharedMem[0x160F0 + i])
+#define ewram160F8                      (gSharedMem[0x160F8])
+#define ewram160F9                      (gSharedMem[0x160F9])
+#define eStatHp                         (gSharedMem[0x160FA])
+#define ewram160FB                      (gSharedMem[0x160FB])
+#define ewram16100                      ((u8 *)(gSharedMem + 0x16100))
+#define ewram16100arr(i)                (gSharedMem[0x16100 + i])
+#define ewram16100arr2(i, bank)         (gSharedMem[0x16100 + i + bank * 4])
+#define ewram16108                      ((u8 *)(gSharedMem + 0x16108))
+#define ewram16108arr(i)                (gSharedMem[0x16108 + i])
+#define ewram16110                      (gSharedMem[0x16110])
+#define ewram16111                      (gSharedMem[0x16111])
+#define ewram16113                      (gSharedMem[0x16113])
+#define ewram16400                      (gSharedMem + 0x16400)
+#define AI_THINKING_STRUCT              ((struct AI_ThinkingStruct *)(gSharedMem + 0x16800))
+#define UNK_2016A00_STRUCT              ((struct UnkBattleStruct1 *) (gSharedMem + 0x16A00))
+#define AI_STACK                        ((struct AI_Stack *)         (gSharedMem + 0x16C00))
+#define AI_ARRAY_160CC(i)               (gSharedMem[0x160CC + i * 2])
+#define eLearnMoveStruct                (struct LearnMoveStruct *)(gSharedMem + 0x17000)
+#define eSecretBaseRecord               ((struct SecretBaseRecord *)(gSharedMem + 0x17000))
+#define ewram17002                      (&gSharedMem[0x17002])
+#define eFlashFireArr                   (*(struct Struct2017100 *)(gSharedMem + 0x17100))
+#define B_BATTLESCRIPTS_STACK           ((struct scriptsStack *)     (gSharedMem + 0x17110))
+#define ewram17130                      (gSharedMem[0x17130])
+#define B_FUNCTION_STACK                ((struct funcStack *)        (gSharedMem + 0x17140))
+#define ewram17160                      (gSharedMem[0x17160])
+#define ewram17800                      ((struct Struct2017800 *)    (gSharedMem + 0x17800))
+#define EWRAM_17800                     ((struct UnknownStruct1 *)(gSharedMem + 0x17800))
+#define eTransformStatuses              ((struct TransformStatus *)(gSharedMem + 0x17800))
+#define ewram17810                      ((struct Struct2017810 *)    (gSharedMem + 0x17810))
+#define EWRAM_17810                     ((struct UnknownStruct3 *)(gSharedMem + 0x17810))
+#define ewram17840                      (*(struct Struct2017840 *)   (gSharedMem + 0x17840))
+#define ewram17850                      ((struct UnknownStruct5 *)(gSharedMem + 0x17850))
+#define ewram_2018000                   (*(struct PlayerRecords *)(gSharedMem + 0x18000))
+#define EWRAM_18000                     ((u16 *)(gSharedMem + 0x18000))
+#define ewram18000                      ((u16 *)(gSharedMem + 0x18000))
+#define ewram18000_2                    (&gSharedMem[0x18000])
+#define ewram18000_3                    *(struct Pokemon **)(gSharedMem + 0x18000)
+#define eBerryBlenderData               (struct BerryBlenderData*)(&gSharedMem[0x18000])
+#define eEggHatchData                   (struct EggHatchData*)(&gSharedMem[0x18000])
+#define UNK_2018000_STRUCT              (*(struct UnknownStruct2018000 *)(gSharedMem + 0x18000))
+#define ewram18300                      ((u16 *)(gSharedMem + 0x18300))
+#define ewram18800                      (&gSharedMem[0x18800])
+#define ewram19000                      (&gSharedMem[0x19000])
+#define EWRAM_19348                     (*(u16 *)(gSharedMem + 0x19348))
+#define ewram19348                      (*(struct Struct2019348 *)(gSharedMem + 0x19348))
+#define ewram19800                      (&gSharedMem[0x19800])
+#define ewram1B000                      (*(struct Unk201B000 *)(gSharedMem + 0x1B000))
+#define ewram1B000_alt                  (*(struct Struct201B000 *)(gSharedMem + 0x1B000))
+#define EWRAM_1B000                     ewram1B000_alt // FIXME
+#define EWRAM_1B000_2                   (*(struct Struct201B000 *)(gSharedMem + 0x1B000))
+#define EWRAM_1C000                     (*(struct Struct201C000 *)(gSharedMem + 0x1C000))
+#define ewram1C000                      (*(struct Unk201C000 *)(gSharedMem + 0x1C000))
+#define ewram1c000                      (*(struct Unk201C000 *)(gSharedMem + 0x1C000)) // FIXME, names too similar
+#define eHallOfFameMons1                (struct HallofFameMons*)(&gSharedMem[0x1C000])
+#define EWRAM_1C800                     (*(struct Unk201C800 *)(gSharedMem + 0x1C800))
+#define ewram1D000                      ((struct Pokemon *)(gSharedMem + 0x1D000))
+#define ewram1D000_2                    ((u16 *)(gSharedMem + 0x1D000))
+#define ewram1D400                      ((u16 *)(gSharedMem + 0x1D400))
+#define ewramSavedItemsPocket           ((struct ItemSlot *)(gSharedMem + 0x1E000))  // saved items pocket (for Wally battle)
+#define ewram1E000(i)                   (gSharedMem[0x1E000 + i])
+#define eHallOfFameMons2                (struct HallofFameMons*)(&gSharedMem[0x1E000])
+#define eHallOfFame                     (struct HallOfFame *)(gSharedMem + 0x1E000)
+#define HALL_OF_FAME_SHEET_0            ((u8 *)(gSharedMem + 0x1E000))
+#define HALL_OF_FAME_SHEET_1            ((u8 *)(gSharedMem + 0x1E800))
+#define ewram_1f000                     (*(struct DecoPCPointers *)(gSharedMem + 0x1f000))
+#define ewramSavedPokeballsPocket       ((struct ItemSlot *)(gSharedMem + 0x1F000))  // saved Pokeballs pocket (for Wally battle)
+#define HALL_OF_FAME_SHEET_2            ((u8 *)(gSharedMem + 0x1F000))
+#define EWRAM_1F800                     ((u16 *)(gSharedMem + 0x1F800))
+#define ewram1FE00                      (*(struct Unk201FE00 *)(gSharedMem + 0x1FE00))
+#define eMailboxInfo                    (*(struct MailboxStruct *)(gSharedMem + 0x1FE00))
+#define eCutGrassSpriteArray            (gSharedMem + 0x1FFF0) // 8 sprite IDs
+#define ewram1FFFC                      (gSharedMem[0x1FFFC])
+#define ewram1FFFD                      (gSharedMem[0x1FFFD])
+#define gHelperState                    (gSharedMem[0x1FFFE])
+#define ewram1FFFE                      (gSharedMem[0x1FFFE])
+#define gReshowState                    (gSharedMem[0x1FFFF])
+#define ewramBagSetupStep               (gSharedMem[0x1FFFF])
+#define ewram1FFFF                      (gSharedMem[0x1FFFF])
+
+#endif
diff --git a/include/party_menu.h b/include/party_menu.h
index f13c2c2df..304389e78 100644
--- a/include/party_menu.h
+++ b/include/party_menu.h
@@ -101,12 +101,6 @@ struct UnknownPokemonStruct2
     /*0x1D*/ u8 language;
 };
 
-extern u8 ewram[];
-#define ewram01000 (*(struct Unk2001000 *)(ewram + 0x01000))
-#define ewram1B000 (*(struct Unk201B000 *)(ewram + 0x1B000))
-#define ewram1B000_alt (*(struct Struct201B000 *)(ewram + 0x1B000))
-#define EWRAM_1B000 ewram1B000_alt
-
 void CB2_PartyMenuMain(void);
 void ChangeBattleTowerPartyMenuSelection(u8 taskId, s8 directionPressed);
 void SetPartyMenuSettings(u8 menuType, u8 battleTypeFlags, TaskFunc menuHandlerFunc, u8 textId);
diff --git a/include/player_pc.h b/include/player_pc.h
index 8debeda88..3302ec634 100644
--- a/include/player_pc.h
+++ b/include/player_pc.h
@@ -13,6 +13,7 @@
 #define SWAP_ITEM_INDEX data[8]
 #define SWITCH_MODE_ACTIVE data[9]
 
+// this is potentially an ewram access occuring in high ewram. TODO: investigate this further.
 #define NEW_GAME_PC_ITEMS(i, type) ((u16)((u16 *)gNewGamePCItems + type)[i * 2])
 
 // defined and used in the above macro
diff --git a/include/script_pokemon_80F9.h b/include/script_pokemon_80F9.h
index fa5d57f0e..eed32f5cf 100644
--- a/include/script_pokemon_80F9.h
+++ b/include/script_pokemon_80F9.h
@@ -7,8 +7,6 @@ struct UnknownStruct2018000
     u8 unk8;
 };
 
-extern struct UnknownStruct2018000 unk_2018000;
-
 void OpenPartyMenuFromScriptContext(u8 taskId);
 void sub_80F9C00(void);
 void sub_80F9E1C(void);
diff --git a/ld_script.txt b/ld_script.txt
index 52006a040..e208d5749 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -9,8 +9,6 @@ SECTIONS {
     ewram (NOLOAD) :
     ALIGN(4)
     {
-        . = 0x20000;
-
 <EWRAM>
 
         . = 0x40000;
diff --git a/shared_syms.txt b/shared_syms.txt
deleted file mode 100644
index 571e0633e..000000000
--- a/shared_syms.txt
+++ /dev/null
@@ -1,43 +0,0 @@
-unk_2000000 = 0x2000000;
-ewram = 0x2000000;
-
-unk_2004000 = 0x2004000;
-
-gUnk_2009000 = 0x2009000;
-
-unk_2007800 = 0x2007800;
-unk_2007900 = 0x2007900;
-
-unk_2008000 = 0x2008000;
-
-unk_2015de0 = 0x2015de0;
-unk_2015e00 = 0x2015e00;
-unk_2016000 = 0x2016000;
-
-unk_201606C = 0x201606C;
-
-unk_20160BC = 0x20160BC;
-
-unk_2016A00 = 0x2016A00;
-unk_2016C00 = 0x2016C00;
-
-gTransformStatuses = 0x2017800;
-unk_2017810 = 0x2017810;
-
-gMailboxInfo = 0x201FE00;
-
-gSecretBaseRecord = 0x2017000;
-
-dword_2017100 = 0x2017100;
-
-unk_2018000 = 0x2018000;
-
-unk_2019348 = 0x2019348;
-
-unk_201B260 = 0x201b260;
-unk_201B264 = 0x201B264;
-unk_201C000 = 0x201C000;
-
-gHallOfFame = 0x201E000;
-unk_201f800 = 0x201F800;
-gCutGrassSpriteArray = 0x201FFF0;
diff --git a/src/battle/battle_2.c b/src/battle/battle_2.c
index 1aec075db..14afc1537 100644
--- a/src/battle/battle_2.c
+++ b/src/battle/battle_2.c
@@ -29,6 +29,7 @@
 #include "items.h"
 #include "hold_effects.h"
 #include "battle_move_effects.h"
+#include "ewram.h"
 
 struct UnknownStruct6
 {
@@ -62,48 +63,6 @@ struct UnknownStruct12
 extern const u16 gUnknown_08D004E0[];
 extern const struct MonCoords gCastformFrontSpriteCoords[];
 
-extern u8 ewram[];
-#define ewram0 (*(struct UnknownStruct7 *)(ewram + 0x0))
-#define ewram4 (*(struct UnknownStruct8 *)(ewram + 0x4))
-#define ewram16000 (ewram[0x16000])
-#define ewram16001 (ewram[0x16001])
-#define ewram16002 (ewram[0x16002])
-#define ewram16003 (ewram[0x16003])
-#define ewram1600C (ewram[0x1600C])
-#define ewram1600E (ewram[0x1600E])
-#define ewram1601B (ewram[0x1601B])
-#define ewram16020 ((u8 *)(ewram + 0x16020))
-#define ewram16056 (ewram[0x16056])
-#define ewram16058 (ewram[0x16058])
-#define ewram16059 (ewram[0x16059])
-#define ewram16078 (ewram[0x16078])
-#define ewram16084 (ewram[0x16084])
-#define ewram16086 (ewram[0x16086])
-#define ewram16087 (ewram[0x16087])
-#define ewram16088 (ewram[0x16088])
-#define ewram16089 (ewram[0x16089])
-#define ewram160A1 (ewram[0x160A1])
-#define ewram160A6 (ewram[0x160A6])
-#define ewram160AC ((u8 *)(ewram + 0x160AC))
-#define ewram160BC ((u16 *)(ewram + 0x160BC))  // hp
-#define ewram160C8 (ewram[0x160C8])
-#define ewram160C9 (ewram[0x160C9])
-#define ewram160CB (ewram[0x160CB])
-#define ewram160CC ((u8 *)(ewram + 0x160CC))
-#define ewram160E6 (ewram[0x160E6])
-#define ewram160E8 ((u8 *)(ewram + 0x160E8))
-#define ewram160F0 ((u8 *)(ewram + 0x160F0))
-#define ewram160F9 (ewram[0x160F9])
-#define ewram16100 ((u8 *)(ewram + 0x16100))
-#define ewram16108 ((u8 *)(ewram + 0x16108))
-#define ewram16110 (ewram[0x16110])
-#define ewram16111 (ewram[0x16111])
-#define ewram16113 (ewram[0x16113])
-#define ewram17100 ((u32 *)(ewram + 0x17100))
-#define ewram17130 (ewram[0x17130])
-#define ewram17160 (ewram[0x17160])
-#define ewram1D000 ((struct Pokemon *)(ewram + 0x1D000))
-
 extern struct UnknownPokemonStruct2 gUnknown_02023A00[];
 extern u8 gBattleBufferB[][0x200];
 extern u8 gActiveBank;
@@ -294,8 +253,8 @@ void sub_800E9EC(void)
         if (species != SPECIES_EGG && hp == 0)
             r6 |= 3 << i * 2;
     }
-    ewram0.unk2 = r6;
-    ewram0.unk3 = r6 >> 8;
+    BATTLE_STRUCT->unk2 = r6;
+    BATTLE_STRUCT->unk3 = r6 >> 8;
 }
 
 void sub_800EAAC(void)
@@ -391,11 +350,11 @@ void sub_800EC9C(void)
         {
             if (gReceivedRemoteLinkPlayers != 0 && sub_8007ECC())
             {
-                ewram0.unk0 = 1;
-                ewram0.unk1 = 1;
+                BATTLE_STRUCT->unk0 = 1;
+                BATTLE_STRUCT->unk1 = 1;
                 sub_800E9EC();
                 sub_800EAAC();
-                SendBlock(bitmask_all_link_players_but_self(), &ewram0, 32);
+                SendBlock(bitmask_all_link_players_but_self(), BATTLE_STRUCT, 32);
                 gBattleCommunication[0] = 1;
             }
         }
@@ -451,7 +410,7 @@ void sub_800EC9C(void)
             gTasks[taskId].data[1] = 0x10E;
             gTasks[taskId].data[2] = 0x5A;
             gTasks[taskId].data[5] = 0;
-            gTasks[taskId].data[3] = ewram0.unk2 | (ewram0.unk3 << 8);
+            gTasks[taskId].data[3] = BATTLE_STRUCT->unk2 | (BATTLE_STRUCT->unk3 << 8);
             gTasks[taskId].data[4] = gBlockRecvBuffer[enemyId][1];
             gBattleCommunication[0]++;
         }
@@ -551,7 +510,7 @@ void sub_800F02C(void)
         if (gUnknown_02023A00[i].language != 1)
             PadNameString(nickname, 0);
     }
-    memcpy(ewram, gUnknown_02023A00, 0x60);
+    memcpy(gSharedMem, gUnknown_02023A00, 0x60);
 }
 
 void sub_800F104(void)
@@ -563,8 +522,8 @@ void sub_800F104(void)
     playerId = GetMultiplayerId();
     ewram160CB = playerId;
     // Seriously, Game Freak?
-    pSavedCallback = (MainCallback *)(ewram + 0x160C4);
-    pSavedBattleTypeFlags = (u16 *)(ewram + 0x160C2);
+    pSavedCallback = ewram160C4_Callback;
+    pSavedBattleTypeFlags = ewram160C2_Flags;
     RunTasks();
     AnimateSprites();
     BuildOamBuffer();
@@ -575,7 +534,7 @@ void sub_800F104(void)
         if (gReceivedRemoteLinkPlayers != 0 && sub_8007ECC())
         {
             sub_800F02C();
-            SendBlock(bitmask_all_link_players_but_self(), ewram, 0x60);
+            SendBlock(bitmask_all_link_players_but_self(), gSharedMem, 0x60);
             gBattleCommunication[0]++;
         }
         break;
@@ -634,11 +593,11 @@ void sub_800F298(void)
     case 0:
         if (gReceivedRemoteLinkPlayers != 0 && sub_8007ECC())
         {
-            ewram0.unk0 = 1;
-            ewram0.unk1 = 1;
+            BATTLE_STRUCT->unk0 = 1;
+            BATTLE_STRUCT->unk1 = 1;
             sub_800E9EC();
             sub_800EAAC();
-            SendBlock(bitmask_all_link_players_but_self(), ewram, 0x20);
+            SendBlock(bitmask_all_link_players_but_self(), gSharedMem, 0x20);
             gBattleCommunication[0]++;
         }
         break;
@@ -904,7 +863,7 @@ void sub_800F828(struct Sprite *sprite)
 
 void sub_800F838(struct Sprite *sprite)
 {
-    u16 *arr = (u16 *)ewram;
+    u16 *arr = (u16 *)gSharedMem;
 
     switch (sprite->data0)
     {
@@ -1578,7 +1537,7 @@ void sub_8010874(void)
         gUnknown_02024C5C[i] = 0xFF;
         gLockedMove[i] = 0;
         gUnknown_02024C2C[i] = 0;
-        ewram17100[i] = 0;
+        eFlashFireArr.arr[i] = 0;
     }
 
     for (i = 0; i < 2; i++)
@@ -1622,12 +1581,12 @@ void sub_8010874(void)
 
     for (i = 0; i < 8; i++)
     {
-        ewram[i + 0x160AC] = 0;
-        ewram[i + 0x160CC] = 0;
-        ewram[i + 0x160E8] = 0;
-        ewram[i + 0x160F0] = 0;
-        ewram[i + 0x16100] = 0;
-        ewram[i + 0x16108] = 0;
+        ewram160ACarr(i) = 0;
+        ewram160CCarr(i) = 0;
+        ewram160E8arr(i) = 0;
+        ewram160F0arr(i) = 0;
+        ewram16100arr(i) = 0;
+        ewram16108arr(i) = 0;
     }
 
     ewram160C8 = 6;
@@ -1662,7 +1621,6 @@ void SwitchInClearStructs(void)
     struct DisableStruct sp0 = gDisableStructs[gActiveBank];
     s32 i;
     u8 *ptr;
-    u32 *ptr2;
 
     if (gBattleMoves[gCurrentMove].effect != EFFECT_BATON_PASS)
     {
@@ -1707,7 +1665,7 @@ void SwitchInClearStructs(void)
     {
         if (gUnknown_02024AD0[i].unk0 & (gBitTable[gActiveBank] << 16))
             gUnknown_02024AD0[i].unk0 &= ~(gBitTable[gActiveBank] << 16);
-        if ((gUnknown_02024AD0[i].unk0 & 0xE000) && ewram[0x16020 + i] == gActiveBank)
+        if ((gUnknown_02024AD0[i].unk0 & 0xE000) && ewram16020arr(i) == gActiveBank)
             gUnknown_02024AD0[i].unk0 &= ~0xE000;
     }
 
@@ -1732,17 +1690,16 @@ void SwitchInClearStructs(void)
     gUnknown_02024C2C[gActiveBank] = 0;
     gUnknown_02024C5C[gActiveBank] = 0xFF;
 
-    ewram[0x160AC + gActiveBank * 2 + 0] = 0;
-    ewram[0x160AC + gActiveBank * 2 + 1] = 0;
-    ewram[0x16100 + gActiveBank * 4 + 0] = 0;
-    ewram[0x16100 + gActiveBank * 4 + 1] = 0;
-    ewram[0x16100 + gActiveBank * 4 + 2] = 0;
-    ewram[0x16100 + gActiveBank * 4 + 3] = 0;
-    ewram[0x160E8 + gActiveBank * 2 + 0] = 0;
-    ewram[0x160E8 + gActiveBank * 2 + 1] = 0;
+    ewram160ACarr2(0, gActiveBank) = 0;
+    ewram160ACarr2(1, gActiveBank) = 0;
+    ewram16100arr2(0, gActiveBank) = 0;
+    ewram16100arr2(1, gActiveBank) = 0;
+    ewram16100arr2(2, gActiveBank) = 0;
+    ewram16100arr2(3, gActiveBank) = 0;
+    ewram160E8arr2(0, gActiveBank) = 0;
+    ewram160E8arr2(1, gActiveBank) = 0;
 
-    ptr2 = (u32 *)(ewram + 0x17100);
-    ptr2[gActiveBank] = 0;
+    eFlashFireArr.arr[gActiveBank] = 0;
 
     gCurrentMove = 0;
 }
@@ -1751,7 +1708,6 @@ void UndoEffectsAfterFainting(void)
 {
     s32 i;
     u8 *ptr;
-    u32 *ptr2;
 
     for (i = 0; i < 8; i++)
         gBattleMons[gActiveBank].statStages[i] = 6;
@@ -1763,7 +1719,7 @@ void UndoEffectsAfterFainting(void)
             gBattleMons[i].status2 &= ~STATUS2_ESCAPE_PREVENTION;
         if (gBattleMons[i].status2 & (gBitTable[gActiveBank] << 16))
             gBattleMons[i].status2 &= ~(gBitTable[gActiveBank] << 16);
-        if ((gBattleMons[i].status2 & STATUS2_WRAPPED) && ewram[0x16020 + i] == gActiveBank)
+        if ((gBattleMons[i].status2 & STATUS2_WRAPPED) && ewram16020arr(i) == gActiveBank)
             gBattleMons[i].status2 &= ~STATUS2_WRAPPED;
     }
     gActionSelectionCursor[gActiveBank] = 0;
@@ -1798,17 +1754,16 @@ void UndoEffectsAfterFainting(void)
     gUnknown_02024C2C[gActiveBank] = 0;
     gUnknown_02024C5C[gActiveBank] = 0xFF;
 
-    ewram[0x160E8 + gActiveBank * 2 + 0] = 0;
-    ewram[0x160E8 + gActiveBank * 2 + 1] = 0;
-    ewram[0x160AC + gActiveBank * 2 + 0] = 0;
-    ewram[0x160AC + gActiveBank * 2 + 1] = 0;
-    ewram[0x16100 + gActiveBank * 4 + 0] = 0;
-    ewram[0x16100 + gActiveBank * 4 + 1] = 0;
-    ewram[0x16100 + gActiveBank * 4 + 2] = 0;
-    ewram[0x16100 + gActiveBank * 4 + 3] = 0;
+    ewram160E8arr2(0, gActiveBank) = 0;
+    ewram160E8arr2(1, gActiveBank) = 0;
+    ewram160ACarr2(0, gActiveBank) = 0;
+    ewram160ACarr2(1, gActiveBank) = 0;
+    ewram16100arr2(0, gActiveBank) = 0;
+    ewram16100arr2(1, gActiveBank) = 0;
+    ewram16100arr2(2, gActiveBank) = 0;
+    ewram16100arr2(3, gActiveBank) = 0;
 
-    ptr2 = (u32 *)(ewram + 0x17100);
-    ptr2[gActiveBank] = 0;
+    eFlashFireArr.arr[gActiveBank] = 0;
 
     gBattleMons[gActiveBank].type1 = gBaseStats[gBattleMons[gActiveBank].species].type1;
     gBattleMons[gActiveBank].type2 = gBaseStats[gBattleMons[gActiveBank].species].type2;
@@ -2169,7 +2124,7 @@ void BattleBeginFirstTurn(void)
             ;
         for (i = 0; i < 4; i++)
         {
-            ewram[0x16068 + i] = 6;
+            ewram16068arr(i) = 6;
             gActionForBanks[i] = 0xFF;
             gChosenMovesByBanks[i] = 0;
         }
@@ -2261,7 +2216,7 @@ void BattleTurnPassed(void)
         gChosenMovesByBanks[i] = 0;
     }
     for (i = 0; i < 4; i++)
-        ewram[0x16068 + i] = 6;
+        ewram16068arr(i) = 6;
     ewram160A6 = gAbsentBankFlags;
     gBattleMainFunc = sub_8012324;
     gRandomTurnNumber = Random();
@@ -2335,23 +2290,23 @@ void sub_8012258(u8 a)
     u8 r1;
 
     for (i = 0; i < 3; i++)
-        gUnknown_02038470[i] = ewram[0x1606C + i + a * 3];
+        gUnknown_02038470[i] = ewram1606Carr(i, a);
     r4 = pokemon_order_func(gBattlePartyID[a]);
-    r1 = pokemon_order_func(ewram[0x16068 + a]);
+    r1 = pokemon_order_func(ewram16068arr(a));
     sub_8094C98(r4, r1);
     if (gBattleTypeFlags & BATTLE_TYPE_DOUBLE)
     {
         for (i = 0; i < 3; i++)
         {
-            ewram[0x1606C + i + a * 3] = gUnknown_02038470[i];
-            ewram[0x1606C + i + (a ^ 2) * 3] = gUnknown_02038470[i];
+            ewram1606Carr(i, a) = gUnknown_02038470[i];
+            ewram1606Carr(i, (a ^ 2)) = gUnknown_02038470[i];
         }
     }
     else
     {
         for (i = 0; i < 3; i++)
         {
-            ewram[0x1606C + i + a * 3] = gUnknown_02038470[i];
+            ewram1606Carr(i, a) = gUnknown_02038470[i];
         }
     }
 }
@@ -2370,7 +2325,7 @@ void sub_8012324(void)
         switch (gBattleCommunication[gActiveBank])
         {
         case 0:
-            ewram[0x016068 + gActiveBank] = 6;
+            ewram16068arr(gActiveBank) = 6;
             if (!(gBattleTypeFlags & 0x40)
              && (r5 & 2)
              && !(ewram160A6 & gBitTable[GetBankByPlayerAI(r5 ^ 2)])
diff --git a/src/battle/battle_3.c b/src/battle/battle_3.c
index 346ca6d79..f37111af5 100644
--- a/src/battle/battle_3.c
+++ b/src/battle/battle_3.c
@@ -13,6 +13,7 @@
 #include "battle_move_effects.h"
 #include "string_util.h"
 #include "flags.h"
+#include "ewram.h"
 
 extern u8* gBattlescriptCurrInstr;
 extern u8 gActiveBank;
@@ -198,8 +199,6 @@ extern u8 gUnknown_081D996F[]; //disobedient, uses a random move
 extern u8 gUnknown_081D9989[]; //disobedient, went to sleep
 extern u8 gUnknown_081D99A0[]; //disobedient, hits itself
 
-#define CHOICED_MOVE(bank)(((u16*)(&ewram[bank * 2 + 0x160e8])))
-
 //array entries for battle communication
 #define MOVE_EFFECT_BYTE    0x3
 #define MULTISTRING_CHOOSER 0x5
@@ -722,12 +721,12 @@ u8 TurnBasedEffects(void)
                     gBattleMons[gActiveBank].status2 -= 0x2000;
                     if (gBattleMons[gActiveBank].status2 & STATUS2_WRAPPED)  // damaged by wrap
                     {
-                        BATTLE_STRUCT->animArg1 = ewram[gActiveBank * 2 + 0x16004];
-                        BATTLE_STRUCT->animArg2 = ewram[gActiveBank * 2 + 0x16005];
+                        BATTLE_STRUCT->animArg1 = ewram16004arr(0, gActiveBank);
+                        BATTLE_STRUCT->animArg2 = ewram16004arr(1, gActiveBank);
                         gBattleTextBuff1[0] = 0xFD;
                         gBattleTextBuff1[1] = 2;
-                        gBattleTextBuff1[2] = ewram[gActiveBank * 2 + 0x16004];
-                        gBattleTextBuff1[3] = ewram[gActiveBank * 2 + 0x16005];
+                        gBattleTextBuff1[2] = ewram16004arr(0, gActiveBank);
+                        gBattleTextBuff1[3] = ewram16004arr(1, gActiveBank);
                         gBattleTextBuff1[4] = EOS;
                         gBattlescriptCurrInstr = BattleScript_WrapTurnDmg;
                         gBattleMoveDamage = gBattleMons[gActiveBank].maxHP / 16;
@@ -738,8 +737,8 @@ u8 TurnBasedEffects(void)
                     {
                         gBattleTextBuff1[0] = 0xFD;
                         gBattleTextBuff1[1] = 2;
-                        gBattleTextBuff1[2] = ewram[gActiveBank * 2 + 0x16004];
-                        gBattleTextBuff1[3] = ewram[gActiveBank * 2 + 0x16005];
+                        gBattleTextBuff1[2] = ewram16004arr(0, gActiveBank);
+                        gBattleTextBuff1[3] = ewram16004arr(1, gActiveBank);
                         gBattleTextBuff1[4] = EOS;
                         gBattlescriptCurrInstr = BattleScript_WrapEnds;
                     }
@@ -1378,7 +1377,7 @@ bool8 sub_8018018(u8 bank, u8 r1, u8 r2)
             r2 = gBattlePartyID[r6];
         for (i = 0; i < 6; i++)
         {
-            if (GetMonData(&party[i], MON_DATA_HP) && GetMonData(&party[i], MON_DATA_SPECIES2) && GetMonData(&party[i], MON_DATA_SPECIES2) != SPECIES_EGG && i != r1 && i != r2 && i != ewram[r7 + 0x16068] && i != ewram[r6 + 0x16068])
+            if (GetMonData(&party[i], MON_DATA_HP) && GetMonData(&party[i], MON_DATA_SPECIES2) && GetMonData(&party[i], MON_DATA_SPECIES2) != SPECIES_EGG && i != r1 && i != r2 && i != ewram16068arr(r7) && i != ewram16068arr(r6))
                 break;
         }
         return (i == 6);
@@ -1434,13 +1433,6 @@ u8 CastformDataTypeChange(u8 bank)
     return formChange;
 }
 
-struct Struct2017100
-{
-    u32 arr[4];
-};
-
-#define ewram17100 (*(struct Struct2017100 *)(ewram + 0x17100))
-
 u8 AbilityBattleEffects(u8 caseID, u8 bank, u8 ability, u8 special, u16 moveArg)
 {
     u8 effect = 0;
@@ -1726,14 +1718,14 @@ u8 AbilityBattleEffects(u8 caseID, u8 bank, u8 ability, u8 special, u16 moveArg)
                 case ABILITY_FLASH_FIRE:
                     if (moveType == TYPE_FIRE && !(gBattleMons[bank].status1 & STATUS_FREEZE))
                     {
-                        if (!(ewram17100.arr[bank] & 1))
+                        if (!(eFlashFireArr.arr[bank] & 1))
                         {
                             gBattleCommunication[MULTISTRING_CHOOSER] = 0;
                             if (gProtectStructs[gBankAttacker].notFirstStrike)
                                 gBattlescriptCurrInstr = BattleScript_FlashFireBoost;
                             else
                                 gBattlescriptCurrInstr = BattleScript_FlashFireBoost_PPLoss;
-                            ewram17100.arr[bank] |= 1;
+                            eFlashFireArr.arr[bank] |= 1;
                             effect = 2;
                         }
                         else
@@ -3131,7 +3123,7 @@ u8 GetMoveTarget(u16 move, u8 useMoveTarget) //get move target
         targetBank = gBankAttacker;
         break;
     }
-    ewram[gBankAttacker + 0x16010] = targetBank;
+    ewram16010arr(gBankAttacker) = targetBank;
     return targetBank;
 }
 
diff --git a/src/battle/battle_4.c b/src/battle/battle_4.c
index 65e0458a2..d7ca298c3 100644
--- a/src/battle/battle_4.c
+++ b/src/battle/battle_4.c
@@ -19,6 +19,7 @@
 #include "task.h"
 #include "decompress.h"
 #include "naming_screen.h"
+#include "ewram.h"
 
 //extern needed variables
 extern u8 gCritMultiplier;
@@ -259,8 +260,6 @@ extern u8 gUnknown_081D9468[];
 #define sBYTE2_32(value)(( (u8) (((s32)(value) & (0x00FF0000)) >> 0x10)))
 #define sBYTE3_32(value)(( (u8) (((s32)(value) & (0xFF000000)) >> 0x18)))
 
-#define USED_HELD_ITEM(bank)((((u16*)(&unk_2000000[bank * 2 + 0x160cc]))))
-
 #define RecordAbilitySetField6(ability, fieldValue) \
 (gLastUsedAbility = ability, gBattleCommunication[6] = fieldValue, RecordAbilityBattle(gBankTarget, ability))
 
@@ -2640,7 +2639,7 @@ void SetMoveEffect(bool8 primary, u8 certainArg)
                     {gBattlescriptCurrInstr++; return;}
 
 				gLastUsedItem = gBattleMons[gBankTarget].item;
-                unk_2000000[gBankAttacker * 2 + 0x160cc] = gLastUsedItem;
+                USED_HELD_ITEM(bank) = gLastUsedItem;
                 gBattleMons[gBankTarget].item = 0;
 
                 gActiveBank = gBankAttacker;
@@ -2654,8 +2653,7 @@ void SetMoveEffect(bool8 primary, u8 certainArg)
                 b_movescr_stack_push(gBattlescriptCurrInstr + 1);
                 gBattlescriptCurrInstr = BattleScript_ItemSteal;
 
-				ewram[gBankTarget * 2 + 0x160e8] = 0;
-                //STORE_CHOICEMOVE(gBankTarget, 0);
+				CHOICED_MOVE(gBankTarget) = 0;
             }
             break;
         case 32: //escape prevention
@@ -2730,8 +2728,7 @@ void SetMoveEffect(bool8 primary, u8 certainArg)
                 b_movescr_stack_push(gBattlescriptCurrInstr + 1);
                 gBattlescriptCurrInstr = BattleScript_KnockedOff;
 
-				ewram[gEffectBank * 2 + 0x160e8] = 0;
-                //STORE_CHOICEMOVE(gEffectBank, 0);
+                CHOICED_MOVE(gEffectBank) = 0;
             }
             break;
         case 59: //overheat
@@ -4999,12 +4996,12 @@ static void atk19_faint_pokemon(void)
         if (!(gAbsentBankFlags & gBitTable[gActiveBank])
          && gBattleMons[gActiveBank].hp == 0)
         {
-            ewram[0x160AC + bank * 2 + 0] = 0;
-            ewram[0x160AC + bank * 2 + 1] = 0;
-            ewram[0x16100 + bank * 4 + 0] = 0;
-            ewram[0x16100 + bank * 4 + 1] = 0;
-            ewram[0x16100 + bank * 4 + 2] = 0;
-            ewram[0x16100 + bank * 4 + 3] = 0;
+            ewram160ACarr2(0, bank) = 0;
+            ewram160ACarr2(1, bank) = 0;
+            ewram16100arr2(0, bank) = 0;
+            ewram16100arr2(1, bank) = 0;
+            ewram16100arr2(2, bank) = 0;
+            ewram16100arr2(3, bank) = 0;
 
             gHitMarker |= HITMARKER_FAINTED(gActiveBank);
             b_movescr_stack_push(gBattlescriptCurrInstr + 7);
@@ -5040,7 +5037,7 @@ static void atk19_faint_pokemon(void)
              && gBattleMons[gBankAttacker].hp != 0
              && gCurrentMove != MOVE_STRUGGLE)
             {
-                u8 moveIndex = ewram[0x1608C + gBankAttacker];
+                u8 moveIndex = ewram1608Carr(gBankAttacker);
 
                 gBattleMons[gBankAttacker].pp[moveIndex] = 0;
                 b_movescr_stack_push(gBattlescriptCurrInstr);
@@ -5123,7 +5120,7 @@ static void atk1E_jumpifability(void)
             gLastUsedAbility = ability;
             gBattlescriptCurrInstr = jump_loc;
             RecordAbilityBattle(bank -1, gLastUsedAbility);
-            unk_2000000[0x160f8] = bank - 1;
+            ewram160F8 = bank - 1;
         }
         else
             gBattlescriptCurrInstr += 7;
@@ -5136,7 +5133,7 @@ static void atk1E_jumpifability(void)
             gLastUsedAbility = ability;
             gBattlescriptCurrInstr = jump_loc;
             RecordAbilityBattle(bank - 1, gLastUsedAbility);
-            unk_2000000[0x160f8] = bank - 1;
+            ewram160F8 = bank - 1;
         }
         else
             gBattlescriptCurrInstr += 7;
@@ -5149,7 +5146,7 @@ static void atk1E_jumpifability(void)
             gLastUsedAbility = ability;
             gBattlescriptCurrInstr = jump_loc;
             RecordAbilityBattle(bank, gLastUsedAbility);
-            unk_2000000[0x160f8] = bank;
+            ewram160F8 = bank;
         }
         else
             gBattlescriptCurrInstr += 7;
@@ -7327,11 +7324,10 @@ static void atk43_jumpifabilitypresent(void)
 
 static void atk44(void)
 {
-    unk_2000000[gBankAttacker + 0x16060] = 1;
+    ewram16060(gBankAttacker) = 1;
 }
 
 #ifdef NONMATCHING
-
 static void atk45_playanimation(void)
 {
     #define ANIMATION_ID T2_READ_8(gBattlescriptCurrInstr + 2)
@@ -9522,7 +9518,7 @@ static void atk4C_copy_poke_data(void)
 
     gActiveBank = GetBattleBank(T2_READ_8(gBattlescriptCurrInstr + 1));
 
-    gBattlePartyID[gActiveBank] = unk_2000000[0x16068 + gActiveBank];
+    gBattlePartyID[gActiveBank] = ewram16068arr(gActiveBank);
 
     EmitGetAttributes(0, 0, gBitTable[gBattlePartyID[gActiveBank]]);
     MarkBufferBankForExecution(gActiveBank);
@@ -9672,8 +9668,7 @@ static void atk4F_jump_if_cannot_switch(void)
 
 void sub_8022A3C(u8 unkown)
 {
-    //BATTLE_STRUCT->unk16064[gActiveBank] = gBattlePartyID[gActiveBank];
-    ewram[gActiveBank + 0x16064] = gBattlePartyID[gActiveBank];
+    BATTLE_PARTY_ID(gActiveBank) = gBattlePartyID[gActiveBank];
     EmitChoosePokemon(0, 1, unkown, 0, BATTLE_STRUCT->unk1606C[gActiveBank]);
     MarkBufferBankForExecution(gActiveBank);
 }
@@ -10761,7 +10756,7 @@ static void atk51_switch_handle_order(void)
         for (i = 0; i < gNoOfAllBanks; i++)
         {
             if (gBattleBufferB[i][0] == 0x22)
-                ewram[i + 0x16068] = gBattleBufferB[i][1];
+                ewram16068arr(i) = gBattleBufferB[i][1];
         }
         break;
     case 1:
@@ -10770,17 +10765,15 @@ static void atk51_switch_handle_order(void)
         break;
     case 2:
         gBattleCommunication[0] = gBattleBufferB[gActiveBank][1];
-        ewram[gActiveBank + 0x16068] = gBattleBufferB[gActiveBank][1];
+        ewram16068arr(gActiveBank) = gBattleBufferB[gActiveBank][1];
         if (gBattleTypeFlags & BATTLE_TYPE_MULTI)
         {
-
-            ewram[(gActiveBank) * 3 + (0x1606C + 0)] &= 0xF;
-            ewram[(gActiveBank) * 3 + (0x1606C + 0)] |= (gBattleBufferB[gActiveBank][2] & 0xF0);
-            ewram[(gActiveBank) * 3 + (0x1606C + 1)] = gBattleBufferB[gActiveBank][3];
-
-            ewram[(gActiveBank ^ 2) * 3 + (0x1606C + 0)] &= (0xF0);
-            ewram[(gActiveBank ^ 2) * 3 + (0x1606C + 0)] |= (gBattleBufferB[gActiveBank][2] & 0xF0) >> 4;
-            ewram[(gActiveBank ^ 2) * 3 + (0x1606C + 2)] = gBattleBufferB[gActiveBank][3];
+            ewram1606Carr(0, gActiveBank) &= 0xF;
+            ewram1606Carr(0, gActiveBank) |= (gBattleBufferB[gActiveBank][2] & 0xF0);
+            ewram1606Carr(1, gActiveBank) = gBattleBufferB[gActiveBank][3];
+            ewram1606Carr(0, (gActiveBank ^ 2)) &= (0xF0);
+            ewram1606Carr(0, (gActiveBank ^ 2)) |= (gBattleBufferB[gActiveBank][2] & 0xF0) >> 4;
+            ewram1606Carr(2, (gActiveBank ^ 2)) = gBattleBufferB[gActiveBank][3];
         }
         else
             sub_8012258(gActiveBank);
@@ -11640,7 +11633,6 @@ static void atk69_dmg_adjustment2(void) //literally a copy of atk07 except there
 void atk6A_removeitem(void)
 {
     gActiveBank = GetBattleBank(T2_READ_8(gBattlescriptCurrInstr + 1));
-    #define USED_HELD_ITEMS(bank) (*(u16 *)&ewram[0x160CC + 2 * (bank)])
     USED_HELD_ITEMS(gActiveBank) = gBattleMons[gActiveBank].item;
 
     gBattleMons[gActiveBank].item = 0;
@@ -12170,7 +12162,7 @@ static void atk74_hp_thresholds2(void)
     {
         gActiveBank = GetBattleBank(T2_READ_8(gBattlescriptCurrInstr + 1));
         opposing_bank = gActiveBank ^ 1;
-        hp_switchout = ewram[2 * GetBankSide(opposing_bank) + 0x160bc]; //BATTLE_STRUCT->HP_OnSwitchout[GetBankSide(opposing_bank)];
+        hp_switchout = ewram160BCarr(GetBankSide(opposing_bank)); //BATTLE_STRUCT->HP_OnSwitchout[GetBankSide(opposing_bank)];
         result = (hp_switchout - gBattleMons[opposing_bank].hp) * 100 / hp_switchout;
 
         if (gBattleMons[opposing_bank].hp >= hp_switchout)
@@ -12244,7 +12236,7 @@ static void atk76_various(void)
             else
                 gActiveBank = 2;
 
-            choiced_move = (u16*)(&ewram[gActiveBank * 2 + 0x160e8]);
+            choiced_move = CHOICED_MOVE(gActiveBank);
             for (i = 0; i < 4; i++)
             {
                 if (gBattleMons[gActiveBank].moves[i] == *choiced_move)
@@ -12384,11 +12376,11 @@ static void atk7B_healhalfHP_if_possible(void)
 
 static void atk7C_8025508(void)
 {
-    u16 r7 = ewram[gBankAttacker * 2 + 0x160ac] | (ewram[gBankAttacker * 2 + 0x160ad] << 8);
-    u16 r6 = ewram[gBankAttacker * 4 + 0x16100] | (ewram[gBankAttacker * 4 + 0x16101] << 8);
-    u16 r5 = ewram[gBankAttacker * 4 + 0x16102] | (ewram[gBankAttacker * 4 + 0x16103] << 8);
+    u16 r7 = ewram160ACarr2(0, gBankAttacker) | (ewram160ACarr2(1, gBankAttacker) << 8);
+    u16 r6 = ewram16100arr2(0, gBankAttacker) | (ewram16100arr2(1, gBankAttacker) << 8);
+    u16 r5 = ewram16100arr2(2, gBankAttacker) | (ewram16100arr2(3, gBankAttacker) << 8);
 
-    if (r7 !=0 && r7 != 0xFFFF)
+    if (r7 != 0 && r7 != 0xFFFF)
     {
         gHitMarker &= ~(HITMARKER_ATTACKSTRING_PRINTED);
         gCurrentMove = r7;
@@ -13467,12 +13459,12 @@ static void atk8D_setmultihit_counter(void)
 
 static void atk8E_prepare_multihit(void)
 {
-    ewram[0x160e0] = 0xFD;
-    ewram[0x160e1] = 1;
-    ewram[0x160e2] = 1;
-    ewram[0x160e3] = 1;
-    ewram[0x160e4] = 0;
-    ewram[0x160e5] = 0xFF;
+    ewram160E0(0) = 0xFD;
+    ewram160E0(1) = 1;
+    ewram160E0(2) = 1;
+    ewram160E0(3) = 1;
+    ewram160E0(4) = 0;
+    ewram160E0(5) = 0xFF;
     gBattlescriptCurrInstr++;
 }
 
@@ -13480,7 +13472,7 @@ static bool8 sub_80264C0(void)
 {
     if (gBattleMons[gBankAttacker].level >= gBattleMons[gBankTarget].level)
     {
-        ewram[gBankTarget + 0x16064] = gBattlePartyID[gBankTarget];
+        ewram16064arr(gBankTarget) = gBattlePartyID[gBankTarget];
     }
     else
     {
@@ -13490,7 +13482,7 @@ static bool8 sub_80264C0(void)
             gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
             return 0;
         }
-        ewram[gBankTarget + 0x16064] = gBattlePartyID[gBankTarget];
+        ewram16064arr(gBankTarget) = gBattlePartyID[gBankTarget];
     }
     gBattlescriptCurrInstr = gUnknown_081D90FC;
     return 1;
@@ -13571,7 +13563,7 @@ static void atk8F_forcerandomswitch(void)
                     } while (i == gBattlePartyID[gBankTarget] || !MON_CAN_BATTLE(&party[i]));
                 }
             }
-            ewram[gBankTarget + 0x16068] = i;
+            ewram16068arr(gBankTarget) = i;
             if (!IsLinkDoubleBattle())
                 sub_8012258(gBankTarget);
             sub_8094B6C(gBankTarget, i, 0);
@@ -15432,7 +15424,7 @@ static void atkBA_jumpifnopursuitswitchdmg(void)
             gBankTarget = GetBankByPlayerAI(2);
     }
 
-    if (gActionForBanks[gBankTarget] == 0 && gBankAttacker == ewram[gBankTarget + 0x16010] && !(gBattleMons[gBankTarget].status1 & (STATUS_SLEEP | STATUS_FREEZE))
+    if (gActionForBanks[gBankTarget] == 0 && gBankAttacker == ewram16010arr(gBankTarget) && !(gBattleMons[gBankTarget].status1 & (STATUS_SLEEP | STATUS_FREEZE))
         && gBattleMons[gBankAttacker].hp && !gDisableStructs[gBankTarget].truantCounter && gChosenMovesByBanks[gBankTarget] == MOVE_PURSUIT)
     {
         int i;
@@ -15501,11 +15493,11 @@ static void atkBE_breakfree(void) //rapid spin
     if (gBattleMons[gBankAttacker].status2 & STATUS2_WRAPPED)
     {
         gBattleMons[gBankAttacker].status2 &= ~(STATUS2_WRAPPED);
-        gBankTarget = ewram[gBankAttacker + 0x16020];
+        gBankTarget = ewram16020arr(gBankAttacker);
         gBattleTextBuff1[0] = 0xFD;
         gBattleTextBuff1[1] = 2;
-        gBattleTextBuff1[2] = ewram[gBankAttacker * 2 + 0x16004];
-        gBattleTextBuff1[3] = ewram[gBankAttacker * 2 + 0x16005];
+        gBattleTextBuff1[2] = ewram16004arr(0, gBankAttacker);
+        gBattleTextBuff1[3] = ewram16004arr(1, gBankAttacker);
         gBattleTextBuff1[4] = 0xFF;
         b_movescr_stack_push_cursor();
         gBattlescriptCurrInstr = BattleScript_WrapFree;
@@ -16985,7 +16977,7 @@ static void atkE1_intimidate_string_loader(void)
 {
     u8 side;
 
-    BATTLE_STRUCT->scriptingActive = ewram[0x160dd];
+    BATTLE_STRUCT->scriptingActive = ewram160DD;
     side = GetBankSide(BATTLE_STRUCT->scriptingActive);
     gBattleTextBuff1[0] = 0xFD;
     gBattleTextBuff1[1] = 9;
@@ -17013,7 +17005,7 @@ static void atkE2_switchout_abilities(void)
     {
     case ABILITY_NATURAL_CURE:
         gBattleMons[gActiveBank].status1 = 0;
-        EmitSetAttributes(0, REQUEST_STATUS_BATTLE, gBitTable[ewram[gActiveBank + 0x16064]], 4, &gBattleMons[gActiveBank].status1);
+        EmitSetAttributes(0, REQUEST_STATUS_BATTLE, gBitTable[ewram16064arr(gActiveBank)], 4, &gBattleMons[gActiveBank].status1);
         MarkBufferBankForExecution(gActiveBank);
         break;
     }
diff --git a/src/battle/battle_7.c b/src/battle/battle_7.c
index 1d68386aa..ceac8ff24 100644
--- a/src/battle/battle_7.c
+++ b/src/battle/battle_7.c
@@ -18,16 +18,7 @@
 #include "task.h"
 #include "text.h"
 #include "gba/m4a_internal.h"
-
-struct Struct2019348
-{
-    u8 filler0[2];
-    u16 unk2;
-    u8 filler4[4];
-    u32 unk8;
-    u32 unkC;
-    u32 unk10;
-};
+#include "ewram.h"
 
 extern u8 gBattleBufferA[][0x200];
 extern u8 gActiveBank;
@@ -71,8 +62,6 @@ extern const struct CompressedSpriteSheet gUnknown_0820A4B4[];
 extern const struct SpritePalette gUnknown_0820A4D4[];
 extern const u8 gUnknown_08D09C48[];
 
-#define ewram19348 (*(struct Struct2019348 *)(ewram + 0x19348))
-
 extern void c3_0802FDF4(u8);
 extern void sub_80440EC();
 extern void sub_804777C();
@@ -304,14 +293,14 @@ void BattleLoadOpponentMonSprite(struct Pokemon *pkmn, u8 b)
         lzPaletteData = GetMonSpritePal(pkmn);
     else
         lzPaletteData = GetMonSpritePalFromOtIdPersonality(species, otId, personalityValue);
-    LZDecompressWram(lzPaletteData, ewram);
-    LoadPalette(ewram, paletteOffset, 0x20);
-    LoadPalette(ewram, 0x80 + b * 16, 0x20);
+    LZDecompressWram(lzPaletteData, gSharedMem);
+    LoadPalette(gSharedMem, paletteOffset, 0x20);
+    LoadPalette(gSharedMem, 0x80 + b * 16, 0x20);
     if (species == SPECIES_CASTFORM)
     {
         paletteOffset = 0x100 + b * 16;
-        LZDecompressWram(lzPaletteData, ewram + 0x16400);
-        LoadPalette(ewram + 0x16400 + gBattleMonForms[b] * 32, paletteOffset, 0x20);
+        LZDecompressWram(lzPaletteData, ewram16400);
+        LoadPalette(ewram16400 + gBattleMonForms[b] * 32, paletteOffset, 0x20);
     }
     if (ewram17800[b].transformedSpecies != 0)
     {
@@ -356,14 +345,14 @@ void BattleLoadPlayerMonSprite(struct Pokemon *pkmn, u8 b)
         lzPaletteData = GetMonSpritePal(pkmn);
     else
         lzPaletteData = GetMonSpritePalFromOtIdPersonality(species, otId, personalityValue);
-    LZDecompressWram(lzPaletteData, ewram);
-    LoadPalette(ewram, paletteOffset, 0x20);
-    LoadPalette(ewram, 0x80 + b * 16, 0x20);
+    LZDecompressWram(lzPaletteData, gSharedMem);
+    LoadPalette(gSharedMem, paletteOffset, 0x20);
+    LoadPalette(gSharedMem, 0x80 + b * 16, 0x20);
     if (species == SPECIES_CASTFORM)
     {
         paletteOffset = 0x100 + b * 16;
-        LZDecompressWram(lzPaletteData, ewram + 0x16400);
-        LoadPalette(ewram + 0x16400 + gBattleMonForms[b] * 32, paletteOffset, 0x20);
+        LZDecompressWram(lzPaletteData, ewram16400);
+        LoadPalette(ewram16400 + gBattleMonForms[b] * 32, paletteOffset, 0x20);
     }
     if (ewram17800[b].transformedSpecies != 0)
     {
@@ -623,7 +612,7 @@ void sub_8031FC4(u8 a, u8 b, bool8 c)
     {
         StartSpriteAnim(&gSprites[gObjectBankIDs[a]], ewram17840.unk0);
         paletteOffset = 0x100 + a * 16;
-        LoadPalette(ewram + 0x16400 + ewram17840.unk0 * 32, paletteOffset, 32);
+        LoadPalette(ewram16400 + ewram17840.unk0 * 32, paletteOffset, 32);
         gBattleMonForms[a] = ewram17840.unk0;
         if (ewram17800[a].transformedSpecies != 0)
         {
@@ -691,11 +680,11 @@ void sub_8031FC4(u8 a, u8 b, bool8 c)
         DmaCopy32(3, src, dst, 0x800);
         paletteOffset = 0x100 + a * 16;
         lzPaletteData = GetMonSpritePalFromOtIdPersonality(species, otId, personalityValue);
-        LZDecompressWram(lzPaletteData, ewram);
-        LoadPalette(ewram, paletteOffset, 32);
+        LZDecompressWram(lzPaletteData, gSharedMem);
+        LoadPalette(gSharedMem, paletteOffset, 32);
         if (species == SPECIES_CASTFORM)
         {
-            u16 *paletteSrc = (u16 *)(ewram + 0x16400);
+            u16 *paletteSrc = (u16 *)ewram16400; // TODO: avoid casting?
 
             LZDecompressWram(lzPaletteData, paletteSrc);
             LoadPalette(paletteSrc + gBattleMonForms[b] * 16, paletteOffset, 32);
diff --git a/src/battle/battle_ai.c b/src/battle/battle_ai.c
index 9c6d2bec4..5145d4980 100644
--- a/src/battle/battle_ai.c
+++ b/src/battle/battle_ai.c
@@ -11,6 +11,7 @@
 #include "rom_8077ABC.h"
 #include "species.h"
 #include "util.h"
+#include "ewram.h"
 
 extern u16 gBattleTypeFlags;
 extern u16 gBattleWeather;
@@ -952,8 +953,8 @@ static void BattleAICmd_is_most_powerful_move(void)
      && sDiscouragedPowerfulMoveEffects[i] == 0xFFFF)
     {
         gDynamicBasePower = 0;
-        ewram[0x1601C] = 0; // why is this a manual array?
-        ewram[0x1601F] = 1;
+        eDynamicMoveType = 0;
+        eDmgMultiplier = 1;
         gBattleMoveFlags = 0;
         gCritMultiplier = 1;
 
@@ -1998,8 +1999,7 @@ static void BattleAICmd_get_used_item(void)
     else
         index = gBankTarget;
 
-    // this hack and a half matches. whatever. i dont care. someone else fix this mess later. PS: still cant fix this.
-    AI_THINKING_STRUCT->funcResult = ewram[MULTI_DIM_ARR(index, B_16, 0x160CC)];
+    AI_THINKING_STRUCT->funcResult = AI_ARRAY_160CC(index);
 
     gAIScriptPtr += 2;
 }
diff --git a/src/battle/battle_anim.c b/src/battle/battle_anim.c
index eac16ee18..408a21f86 100644
--- a/src/battle/battle_anim.c
+++ b/src/battle/battle_anim.c
@@ -12,11 +12,11 @@
 #include "sound.h"
 #include "sprite.h"
 #include "task.h"
+#include "ewram.h"
 
 // sprites start at 10000 and thus must be subtracted of 10000 to account for the true index.
 #define GET_TRUE_SPRITE_INDEX(i) (i - 10000)
 
-extern u8 unk_2000000[];
 extern u16 gBattlePartyID[4];
 extern u8 gObjectBankIDs[];
 extern u8 gBankAttacker;
diff --git a/src/battle/battle_anim_807B69C.c b/src/battle/battle_anim_807B69C.c
index 9acc7bd46..7fcd1e23f 100644
--- a/src/battle/battle_anim_807B69C.c
+++ b/src/battle/battle_anim_807B69C.c
@@ -7,6 +7,7 @@
 #include "sprite.h"
 #include "task.h"
 #include "trig.h"
+#include "ewram.h"
 
 extern u8 gBattleAnimBankAttacker;
 extern u8 gBattleAnimBankTarget;
diff --git a/src/battle/battle_controller_linkopponent.c b/src/battle/battle_controller_linkopponent.c
index ff4df81e4..107c374a0 100644
--- a/src/battle/battle_controller_linkopponent.c
+++ b/src/battle/battle_controller_linkopponent.c
@@ -15,6 +15,7 @@
 #include "task.h"
 #include "text.h"
 #include "util.h"
+#include "ewram.h"
 
 struct UnknownStruct3
 {
diff --git a/src/battle/battle_controller_linkpartner.c b/src/battle/battle_controller_linkpartner.c
index a874190aa..25deebf78 100644
--- a/src/battle/battle_controller_linkpartner.c
+++ b/src/battle/battle_controller_linkpartner.c
@@ -19,6 +19,7 @@
 #include "task.h"
 #include "text.h"
 #include "util.h"
+#include "ewram.h"
 
 struct UnknownStruct1
 {
diff --git a/src/battle/battle_controller_opponent.c b/src/battle/battle_controller_opponent.c
index 392e80f08..823d6702a 100644
--- a/src/battle/battle_controller_opponent.c
+++ b/src/battle/battle_controller_opponent.c
@@ -20,6 +20,7 @@
 #include "task.h"
 #include "text.h"
 #include "util.h"
+#include "ewram.h"
 
 struct UnknownStruct3
 {
@@ -1673,7 +1674,7 @@ _0803558A:\n\
 void OpponentHandleOpenBag(void)
 {
     // What is this?
-    Emitcmd35(1, ewram[0x160D4 + gActiveBank / 2 * 2]);
+    Emitcmd35(1, ewram160D4(gActiveBank));
     OpponentBufferExecCompleted();
 }
 
@@ -1681,7 +1682,7 @@ void OpponentHandlecmd22(void)
 {
     s32 r4;
 
-    if (ewram[0x160C8 + GetBankIdentity(gActiveBank) / 2] == 6)
+    if (ewram160C8arr(GetBankIdentity(gActiveBank)) == 6)
     {
         u8 r6;
         u8 r5;
@@ -1710,10 +1711,10 @@ void OpponentHandlecmd22(void)
     }
     else
     {
-        r4 = ewram[0x160C8 + GetBankIdentity(gActiveBank) / 2];
-        ewram[0x160C8 + GetBankIdentity(gActiveBank) / 2] = 6;
+        r4 = ewram160C8arr(GetBankIdentity(gActiveBank));
+        ewram160C8arr(GetBankIdentity(gActiveBank)) = 6;
     }
-    ewram[0x16068 + gActiveBank] = r4;
+    ewram16068arr(gActiveBank) = r4;
     Emitcmd34(1, r4, 0);
     OpponentBufferExecCompleted();
 }
diff --git a/src/battle/battle_controller_player.c b/src/battle/battle_controller_player.c
index 136c31841..1aa73e90c 100644
--- a/src/battle/battle_controller_player.c
+++ b/src/battle/battle_controller_player.c
@@ -19,6 +19,7 @@
 #include "task.h"
 #include "text.h"
 #include "util.h"
+#include "ewram.h"
 
 //Possibly PokemonSubstruct1
 struct UnknownStruct3
@@ -2644,9 +2645,9 @@ void PlayerHandlecmd22(void)
 
     gUnknown_0300434C[gActiveBank] = CreateTask(TaskDummy, 0xFF);
     gTasks[gUnknown_0300434C[gActiveBank]].data[0] = gBattleBufferA[gActiveBank][1] & 0xF;
-    ewram[0x16054] = gBattleBufferA[gActiveBank][1] >> 4;
-    ewram[0x1609D] = gBattleBufferA[gActiveBank][2];
-    ewram[0x160C0] = gBattleBufferA[gActiveBank][3];
+    ewram16054 = gBattleBufferA[gActiveBank][1] >> 4;
+    EWRAM_1609D = gBattleBufferA[gActiveBank][2];
+    ewram160C0 = gBattleBufferA[gActiveBank][3];
     for (i = 0; i < 3; i++)
         gUnknown_02038470[i] = gBattleBufferA[gActiveBank][4 + i];
     BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 16, 0);
diff --git a/src/battle/battle_controller_safari.c b/src/battle/battle_controller_safari.c
index 2fcdf7548..5b89cf9ba 100644
--- a/src/battle/battle_controller_safari.c
+++ b/src/battle/battle_controller_safari.c
@@ -12,6 +12,7 @@
 #include "sound.h"
 #include "text.h"
 #include "util.h"
+#include "ewram.h"
 
 extern struct Window gUnknown_03004210;
 extern u8 gDisplayedStringBattle[];
diff --git a/src/battle/battle_controller_wally.c b/src/battle/battle_controller_wally.c
index 9d70ca557..9392832d7 100644
--- a/src/battle/battle_controller_wally.c
+++ b/src/battle/battle_controller_wally.c
@@ -17,6 +17,7 @@
 #include "task.h"
 #include "text.h"
 #include "util.h"
+#include "ewram.h"
 
 //Possibly PokemonSubstruct1
 struct UnknownStruct3
@@ -239,10 +240,10 @@ void unref_sub_8137220(void)
 void SetBankFuncToWallyBufferRunCommand(void)
 {
     gBattleBankFunc[gActiveBank] = WallyBufferRunCommand;
-    ewram[0x160A8] = 0;
-    ewram[0x160A9] = 0;
-    ewram[0x160AA] = 0;
-    ewram[0x160AB] = 0;
+    ewram160A8 = 0;
+    ewram160A9 = 0;
+    ewram160AA = 0;
+    ewram160AB = 0;
 }
 
 void WallyBufferRunCommand(void)
@@ -260,59 +261,59 @@ void sub_81372BC(void)
 {
     u8 r4;
 
-    switch (ewram[0x160A8])
+    switch (ewram160A8)
     {
     case 0:
-        ewram[0x160AA] = 64;
-        ewram[0x160A8]++;
+        ewram160AA = 64;
+        ewram160A8++;
         // fall through
     case 1:
-        r4 = --ewram[0x160AA];
+        r4 = --ewram160AA;
         if (r4 == 0)
         {
             PlaySE(SE_SELECT);
             Emitcmd33(1, 0, 0);
             WallyBufferExecCompleted();
-            ewram[0x160A8]++;
-            ewram[0x160A9] = r4;
-            ewram[0x160AA] = 64;
+            ewram160A8++;
+            ewram160A9 = r4;
+            ewram160AA = 64;
         }
         break;
     case 2:
-        r4 = --ewram[0x160AA];
+        r4 = --ewram160AA;
         if (r4 == 0)
         {
             PlaySE(SE_SELECT);
             Emitcmd33(1, 0, 0);
             WallyBufferExecCompleted();
-            ewram[0x160A8]++;
-            ewram[0x160A9] = r4;
-            ewram[0x160AA] = 64;
+            ewram160A8++;
+            ewram160A9 = r4;
+            ewram160AA = 64;
         }
         break;
     case 3:
-        r4 = --ewram[0x160AA];
+        r4 = --ewram160AA;
         if (r4 == 0)
         {
             Emitcmd33(1, 9, 0);
             WallyBufferExecCompleted();
-            ewram[0x160A8]++;
-            ewram[0x160A9] = r4;
-            ewram[0x160AA] = 64;
+            ewram160A8++;
+            ewram160A9 = r4;
+            ewram160AA = 64;
         }
         break;
     case 4:
-        if (--ewram[0x160AA] == 0)
+        if (--ewram160AA == 0)
         {
             PlaySE(SE_SELECT);
             nullsub_8(0);
             sub_802E3E4(1, 0);
-            ewram[0x160AA] = 64;
-            ewram[0x160A8]++;
+            ewram160AA = 64;
+            ewram160A8++;
         }
         break;
     case 5:
-        if (--ewram[0x160AA] == 0)
+        if (--ewram160AA == 0)
         {
             PlaySE(SE_SELECT);
             DestroyMenuCursor();
@@ -1290,16 +1291,16 @@ void WallyHandlecmd19(void)
 
 void WallyHandlecmd20(void)
 {
-    switch (ewram[0x160A9])
+    switch (ewram160A9)
     {
     case 0:
         sub_80304A8();
-        ewram[0x160A9]++;
-        ewram[0x160AB] = 80;
+        ewram160A9++;
+        ewram160AB = 80;
         // fall through
     case 1:
-        ewram[0x160AB]--;
-        if (ewram[0x160AB] == 0)
+        ewram160AB--;
+        if (ewram160AB == 0)
         {
             DestroyMenuCursor();
             PlaySE(SE_SELECT);
diff --git a/src/battle/battle_interface.c b/src/battle/battle_interface.c
index 10962c025..09837bfee 100644
--- a/src/battle/battle_interface.c
+++ b/src/battle/battle_interface.c
@@ -13,6 +13,7 @@
 #include "string_util.h"
 #include "task.h"
 #include "text.h"
+#include "ewram.h"
 
 struct UnknownStruct5
 {
@@ -28,12 +29,6 @@ struct UnknownStruct7
     u8 filler0[0x180];
 };
 
-extern u8 ewram[];
-#define ewram520   ((struct UnknownStruct7 *)(ewram + 0x00520))
-#define ewram16088 (*(u8 *)                  (ewram + 0x16088))
-#define ewram16089 (*(u8 *)                  (ewram + 0x16089))
-#define ewram17850 ((struct UnknownStruct5 *)(ewram + 0x17850))
-
 extern u8 gDisplayedStringBattle[];
 extern u8 gNoOfAllBanks;
 extern u16 gBattlePartyID[];
@@ -1000,8 +995,8 @@ void sub_8044338(u8 a, struct Pokemon *pkmn)
     }
     //_08044486
     r5 = gSprites[a].data5;
-    ConvertIntToDecimalStringN(str + 6, ewram[0x16089], 1, 2);
-    ConvertIntToDecimalStringN(str + 9, ewram[0x16088], 1, 2);
+    ConvertIntToDecimalStringN(str + 6, ewram16089, 1, 2);
+    ConvertIntToDecimalStringN(str + 9, ewram16088, 1, 2);
     str[5] = 0;
     str[8] = 0xBA;
     sub_80034D4((u8 *)0x02000000, str);
diff --git a/src/battle/battle_message.c b/src/battle/battle_message.c
index 79855a614..4e8067a49 100644
--- a/src/battle/battle_message.c
+++ b/src/battle/battle_message.c
@@ -12,6 +12,7 @@
 #include "battle_setup.h"
 #include "battle_tower.h"
 #include "flags.h"
+#include "ewram.h"
 
 #define BATTLESTRING_TO_SUB 12
 #define BATTLESTRINGS_NO    351
@@ -651,7 +652,7 @@ u32 StrCpyDecodeBattle(const u8* src, u8* dst)
                 if (gTrainerBattleOpponent == 0x400)
                 {
                     memset(text, 0xFF, 8);
-                    memcpy(text, &ewram[0x17002], 7);
+                    memcpy(text, ewram17002, 7);
                     toCpy = text;
                 }
                 else if (gBattleTypeFlags & BATTLE_TYPE_BATTLE_TOWER)
diff --git a/src/battle/battle_party_menu.c b/src/battle/battle_party_menu.c
index 2f6dc6816..97e9dc0fc 100644
--- a/src/battle/battle_party_menu.c
+++ b/src/battle/battle_party_menu.c
@@ -18,9 +18,7 @@
 #include "strings.h"
 #include "task.h"
 #include "text.h"
-
-extern u8 ewram[];
-#define UNK_201606C_ARRAY (ewram + 0x1606C) // lazy define but whatever.
+#include "ewram.h"
 
 extern u8 sub_806BD58(u8, u8);
 extern void PartyMenuPrintMonsLevelOrStatus(void);
@@ -206,7 +204,7 @@ void sub_8094B6C(u8 a, u8 b, u8 c)
 
     if (IsLinkDoubleBattle())
     {
-        u8 *arr = ewram + 0x1606C + a * 3;
+        u8 *arr = &ewram1606Carr(0, a);
 
         for (i = 0, j = 0; i < 3; i++)
         {
diff --git a/src/battle/battle_transition.c b/src/battle/battle_transition.c
index 53d32d03a..d0a9bfb92 100644
--- a/src/battle/battle_transition.c
+++ b/src/battle/battle_transition.c
@@ -12,11 +12,11 @@
 #include "songs.h"
 #include "trainer.h"
 #include "field_camera.h"
+#include "ewram.h"
 
 void sub_807DE10(void);
 void dp12_8087EA4(void);
 
-extern u8 ewram[];
 extern u16 gUnknown_03005560[];
 extern u16 gUnknown_03004DE0[][0x3C0];
 
@@ -45,7 +45,6 @@ struct TransitionData
     s16 data[11];
 };
 
-#define TRANSITION_STRUCT   (*(struct TransitionData *)   (ewram + 0xC000))
 typedef bool8 (*TransitionState)(struct Task* task);
 typedef bool8 (*TransitionSpriteCallback)(struct Sprite* sprite);
 
@@ -1734,8 +1733,8 @@ static void Mugshots_CreateOpponentPlayerSprites(struct Task* task)
     task->tMugshotOpponentID = CreateTrainerSprite(sMugshotsTrainerPicIDsTable[mugshotID],
                                                      sMugshotsOpponentCoords[mugshotID][0] - 32,
                                                      sMugshotsOpponentCoords[mugshotID][1] + 42,
-                                                     0, &ewram[0xC03C]);
-    task->tMugshotPlayerID = CreateTrainerSprite(gSaveBlock2.playerGender, 272, 106, 0, &ewram[0xC03C]);
+                                                     0, ewramC03C);
+    task->tMugshotPlayerID = CreateTrainerSprite(gSaveBlock2.playerGender, 272, 106, 0, ewramC03C);
 
     opponentSprite = &gSprites[task->tMugshotOpponentID];
     playerSprite = &gSprites[task->tMugshotPlayerID];
diff --git a/src/battle/calculate_base_damage.c b/src/battle/calculate_base_damage.c
index f5c679876..42c26dee0 100644
--- a/src/battle/calculate_base_damage.c
+++ b/src/battle/calculate_base_damage.c
@@ -11,8 +11,8 @@
 #include "species.h"
 #include "moves.h"
 #include "battle_move_effects.h"
+#include "ewram.h"
 
-extern u32 dword_2017100[];
 extern u16 gBattleTypeFlags;
 extern struct BattlePokemon gBattleMons[4];
 extern u16 gCurrentMove;
@@ -301,7 +301,7 @@ s32 CalculateBaseDamage(struct BattlePokemon *attacker, struct BattlePokemon *de
         }
 
         // flash fire triggered
-        if ((dword_2017100[bankAtk] & 1) && type == TYPE_FIRE)
+        if ((eFlashFireArr.arr[bankAtk] & 1) && type == TYPE_FIRE)
             damage = (15 * damage) / 10;
     }
 
diff --git a/src/battle/pokeball.c b/src/battle/pokeball.c
index ee3b95678..afdf47979 100644
--- a/src/battle/pokeball.c
+++ b/src/battle/pokeball.c
@@ -14,6 +14,7 @@
 #include "task.h"
 #include "trig.h"
 #include "util.h"
+#include "ewram.h"
 
 extern struct MusicPlayerInfo gMPlay_BGM;
 extern u16 gBattleTypeFlags;
diff --git a/src/battle/reshow_battle_screen.c b/src/battle/reshow_battle_screen.c
index 343c8f183..396c4435e 100644
--- a/src/battle/reshow_battle_screen.c
+++ b/src/battle/reshow_battle_screen.c
@@ -7,6 +7,7 @@
 #include "text.h"
 #include "rom_8077ABC.h"
 #include "data2.h"
+#include "ewram.h"
 
 extern struct SpriteTemplate gUnknown_02024E8C;
 extern struct Window gUnknown_03004210;
@@ -55,9 +56,6 @@ static void sub_807B184(u8 bank);
 static void sub_807B508(u8 bank);
 static void sub_807B06C(void);
 
-#define gReshowState ewram[0x1FFFF]
-#define gHelperState ewram[0x1FFFE]
-
 void nullsub_14(void)
 {
 
diff --git a/src/de_rom_8040FE0.c b/src/de_rom_8040FE0.c
index 8cf510d6f..8adad3245 100644
--- a/src/de_rom_8040FE0.c
+++ b/src/de_rom_8040FE0.c
@@ -1,6 +1,7 @@
 #include "global.h"
 #include "battle.h"
 #include "battle_tower.h"
+#include "ewram.h"
 
 #if GERMAN
 
@@ -21,8 +22,6 @@ enum {
     TRAINER_CLASS_MAY_3 = 63,
 };
 
-extern struct SecretBaseRecord gSecretBaseRecord;
-
 extern u8 gTrainerClassNames[][13];
 extern struct Trainer gTrainers[];
 
@@ -70,7 +69,7 @@ u8 *de_sub_8041024(s32 arg0, u32 arg1) {
     {
     case 0x400:
         nameIndex = GetSecretBaseTrainerNameIndex();
-        gender = gSecretBaseRecord.gender;
+        gender = eSecretBaseRecord.gender;
         if (nameIndex == TRAINER_CLASS_NAME_SCHOOL_KID)
         {
             return de_sub_8040FE0(gender);
diff --git a/src/debug/matsuda_debug_menu.c b/src/debug/matsuda_debug_menu.c
index d0c0f95f7..3378e4e0a 100644
--- a/src/debug/matsuda_debug_menu.c
+++ b/src/debug/matsuda_debug_menu.c
@@ -15,6 +15,7 @@
 #include "task.h"
 #include "text.h"
 #include "unknown_task.h"
+#include "ewram.h"
 
 extern u8 gUnknown_0203856C;
 extern u8 gUnknown_0203857D[][64];
@@ -45,7 +46,6 @@ extern u8 gUnknown_083C9282[];
 extern const u8 gUnknown_083C928E[][2];
 extern u8 gUnknown_083C9296[];
 extern u8 gUnknown_083C92A8[];
-extern u8 unk_2000000[];
 extern u8 gMatsudaDebugMenu_GoBackText[];
 extern u8 gMatsudaDebugMenu_BattlePointsText[];
 extern u8 gMatsudaDebugMenu_StartText[];
@@ -414,14 +414,14 @@ void sub_80AA280(u8 var) // no?
     u8 i;
 
     FillWindowRect_DefaultPalette(&gMenuWindow, 0, 0, 0, 0x1E, 3);
-    StringCopy(unk_2000000, gMatsudaDebugMenu_StartText);
-    StringAppend(unk_2000000, &gUnknown_0203857D[var][0]);
+    StringCopy(gSharedMem, gMatsudaDebugMenu_StartText);
+    StringAppend(gSharedMem, &gUnknown_0203857D[var][0]);
 
     for (i = 0; i < 4; i++)
     {
         if (var == i)
         {
-            sub_8003460(&gMenuWindow, unk_2000000, (10 * i + 2), gUnknown_083C926E[i][0], gUnknown_083C926E[i][1]);
+            sub_8003460(&gMenuWindow, gSharedMem, (10 * i + 2), gUnknown_083C926E[i][0], gUnknown_083C926E[i][1]);
         }
         else
         {
@@ -433,38 +433,38 @@ void sub_80AA280(u8 var) // no?
 
 static void sub_80AA340(u8 var)
 {
-    ConvertIntToDecimalStringN(unk_2000000, gContestMons[var].cool, STR_CONV_MODE_RIGHT_ALIGN, 3);
-    sub_8003460(&gMenuWindow, unk_2000000, 0x66, gUnknown_083C9282[0], gUnknown_083C9282[1]);
+    ConvertIntToDecimalStringN(gSharedMem, gContestMons[var].cool, STR_CONV_MODE_RIGHT_ALIGN, 3);
+    sub_8003460(&gMenuWindow, gSharedMem, 0x66, gUnknown_083C9282[0], gUnknown_083C9282[1]);
 }
 
 static void sub_80AA388(u8 var)
 {
-    ConvertIntToDecimalStringN(unk_2000000, gContestMons[var].cute, STR_CONV_MODE_RIGHT_ALIGN, 3);
-    sub_8003460(&gMenuWindow, unk_2000000, 0x6C, gUnknown_083C9282[2], gUnknown_083C9282[3]);
+    ConvertIntToDecimalStringN(gSharedMem, gContestMons[var].cute, STR_CONV_MODE_RIGHT_ALIGN, 3);
+    sub_8003460(&gMenuWindow, gSharedMem, 0x6C, gUnknown_083C9282[2], gUnknown_083C9282[3]);
 }
 
 static void sub_80AA3D0(u8 var)
 {
-    ConvertIntToDecimalStringN(unk_2000000, gContestMons[var].beauty, STR_CONV_MODE_RIGHT_ALIGN, 3);
-    sub_8003460(&gMenuWindow, unk_2000000, 0x72, gUnknown_083C9282[4], gUnknown_083C9282[5]);
+    ConvertIntToDecimalStringN(gSharedMem, gContestMons[var].beauty, STR_CONV_MODE_RIGHT_ALIGN, 3);
+    sub_8003460(&gMenuWindow, gSharedMem, 0x72, gUnknown_083C9282[4], gUnknown_083C9282[5]);
 }
 
 static void sub_80AA418(u8 var)
 {
-    ConvertIntToDecimalStringN(unk_2000000, gContestMons[var].smart, STR_CONV_MODE_RIGHT_ALIGN, 3);
-    sub_8003460(&gMenuWindow, unk_2000000, 0x78, gUnknown_083C9282[6], gUnknown_083C9282[7]);
+    ConvertIntToDecimalStringN(gSharedMem, gContestMons[var].smart, STR_CONV_MODE_RIGHT_ALIGN, 3);
+    sub_8003460(&gMenuWindow, gSharedMem, 0x78, gUnknown_083C9282[6], gUnknown_083C9282[7]);
 }
 
 static void sub_80AA460(u8 var)
 {
-    ConvertIntToDecimalStringN(unk_2000000, gContestMons[var].tough, STR_CONV_MODE_RIGHT_ALIGN, 3);
-    sub_8003460(&gMenuWindow, unk_2000000, 0x7E, gUnknown_083C9282[8], gUnknown_083C9282[9]);
+    ConvertIntToDecimalStringN(gSharedMem, gContestMons[var].tough, STR_CONV_MODE_RIGHT_ALIGN, 3);
+    sub_8003460(&gMenuWindow, gSharedMem, 0x7E, gUnknown_083C9282[8], gUnknown_083C9282[9]);
 }
 
 static void sub_80AA4A8(u8 var)
 {
-    ConvertIntToDecimalStringN(unk_2000000, gContestMons[var].sheen, STR_CONV_MODE_RIGHT_ALIGN, 3);
-    sub_8003460(&gMenuWindow, unk_2000000, 0x84, gUnknown_083C9282[10], gUnknown_083C9282[11]);
+    ConvertIntToDecimalStringN(gSharedMem, gContestMons[var].sheen, STR_CONV_MODE_RIGHT_ALIGN, 3);
+    sub_8003460(&gMenuWindow, gSharedMem, 0x84, gUnknown_083C9282[10], gUnknown_083C9282[11]);
 }
 
 static void sub_80AA4F0(u8 var1, u8 var2)
@@ -489,8 +489,8 @@ static void sub_80AA614(u8 var1, u8 var2)
 {
     u16 var = sub_80AE770(var1, var2);
 
-    ConvertIntToDecimalStringN(unk_2000000, var, STR_CONV_MODE_RIGHT_ALIGN, 3);
-    sub_8003460(&gMenuWindow, unk_2000000, 0xE2, 3, 0xC);
+    ConvertIntToDecimalStringN(gSharedMem, var, STR_CONV_MODE_RIGHT_ALIGN, 3);
+    sub_8003460(&gMenuWindow, gSharedMem, 0xE2, 3, 0xC);
 }
 
 void sub_80AA658(u8 var)
@@ -739,7 +739,7 @@ void sub_80AACC4(void)
     {
         SetDebugMonForContest();
         if (!(gIsLinkContest & 1))
-            sub_80AE82C(unk_2000000[0]);
+            sub_80AE82C(eMatsudaDebugVar);
         SetMainCallback2(sub_80AB47C);
     }
 }
@@ -748,7 +748,7 @@ void sub_80AAD08(struct Sprite *sprite, s8 var2)
 {
     if (var2 == 1)
     {
-        unk_2000000[0] = sprite->data3;
+        eMatsudaDebugVar = sprite->data3;
         SetMainCallback2(sub_80AACC4);
         BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 0x10, 0);
     }
diff --git a/src/engine/link.c b/src/engine/link.c
index 7f7e48083..002d397d2 100644
--- a/src/engine/link.c
+++ b/src/engine/link.c
@@ -15,6 +15,7 @@
 #include "strings2.h"
 #include "task.h"
 #include "text.h"
+#include "ewram.h"
 
 #define SIO_MULTI_CNT ((struct SioMultiCnt *)REG_ADDR_SIOCNT)
 
@@ -35,8 +36,6 @@ struct LinkTestBGInfo
     u32 dummy_C;
 };
 
-extern u8 unk_2000000[];
-extern u8 unk_2004000[];
 extern u16 gBattleTypeFlags;
 
 extern u16 word_3004858;
@@ -404,7 +403,7 @@ static void LinkTestProcessKeyInput(void)
     if (gMain.newKeys & A_BUTTON)
         gShouldAdvanceLinkState = 1;
     if (gMain.heldKeys & B_BUTTON)
-        InitBlockSend(unk_2004000, 0x2004);
+        InitBlockSend(ewram4000, 0x2004);
     if (gMain.newKeys & L_BUTTON)
         BeginNormalPaletteFade(-1, 0, 0x10, 0, 2);
     if (gMain.newKeys & START_BUTTON)
@@ -507,7 +506,7 @@ static void ProcessRecvCmds(u8 unusedParam)
         case 0x8888:
             if (sBlockRecv[i].size > BLOCK_BUFFER_SIZE)
             {
-                u16 *buffer = (u16 *)unk_2000000;
+                u16 *buffer = (u16 *)gSharedMem;
                 u16 j;
                 for (j = 0; j < CMD_LENGTH - 1; j++)
                     buffer[(sBlockRecv[i].pos / 2) + j] = gRecvCmds[j + 1][i];
diff --git a/src/engine/main.c b/src/engine/main.c
index d7c11b6c8..ea381cb31 100644
--- a/src/engine/main.c
+++ b/src/engine/main.c
@@ -70,6 +70,7 @@ bool8 gLinkVSyncDisabled;
 u32 IntrMain_Buffer[0x200];
 u8 gPcmDmaCounter;
 
+EWRAM_DATA u8 gSharedMem[0x20000] = {0};
 EWRAM_DATA void (**gFlashTimerIntrFunc)(void) = NULL;
 
 static void UpdateLinkAndCallCallbacks(void);
diff --git a/src/engine/main_menu.c b/src/engine/main_menu.c
index e0af86f3d..bfbf0dcd6 100644
--- a/src/engine/main_menu.c
+++ b/src/engine/main_menu.c
@@ -22,6 +22,7 @@
 #include "text.h"
 #include "title_screen.h"
 #include "unknown_task.h"
+#include "ewram.h"
 
 #define BirchSpeechUpdateWindowText() ((u8)MenuUpdateWindowText_OverrideLineLength(24))
 
@@ -54,8 +55,6 @@ extern const u8 gUnknown_081E796C[];
 
 extern const union AffineAnimCmd *const gSpriteAffineAnimTable_81E79AC[];
 
-extern u8 unk_2000000[];
-
 //Menu layouts
 enum
 {
@@ -1419,14 +1418,14 @@ void AddBirchSpeechObjects(u8 taskId)
     gTasks[taskId].tAzurillSpriteId = spriteId;
 
     //Create Brendan sprite
-    spriteId = CreateTrainerSprite(0, 120, 60, 0, unk_2000000);
+    spriteId = CreateTrainerSprite(0, 120, 60, 0, eBrendanSprite);
     gSprites[spriteId].callback = nullsub_34;
     gSprites[spriteId].invisible = 1;
     gSprites[spriteId].oam.priority = 0;
     gTasks[taskId].tBrendanSpriteId = spriteId;
 
     //Create May sprite
-    spriteId = CreateTrainerSprite(1, 120, 60, 0, unk_2000000 + 0x800);
+    spriteId = CreateTrainerSprite(1, 120, 60, 0, eMaySprite);
     gSprites[spriteId].callback = nullsub_34;
     gSprites[spriteId].invisible = 1;
     gSprites[spriteId].oam.priority = 0;
diff --git a/src/engine/mystery_event_menu.c b/src/engine/mystery_event_menu.c
index 0e48dc177..a472eea3b 100644
--- a/src/engine/mystery_event_menu.c
+++ b/src/engine/mystery_event_menu.c
@@ -13,8 +13,7 @@
 #include "strings2.h"
 #include "task.h"
 #include "text.h"
-
-extern u8 unk_2000000[];
+#include "ewram.h"
 
 static EWRAM_DATA u8 gUnknown_02039338 = 0;
 
@@ -287,8 +286,8 @@ static void CB2_MysteryEventMenu(void)
     case 11:
         if (gReceivedRemoteLinkPlayers)
             break;
-        unkVal = RunMysteryEventScript(unk_2000000);
-        CpuFill32(0, unk_2000000, 0x7D4);
+        unkVal = RunMysteryEventScript(gSharedMem);
+        CpuFill32(0, gSharedMem, 0x7D4);
         if (!GetEventLoadMessage(gStringVar4, unkVal))
             TrySavingData(NORMAL_SAVE);
         gMain.state++;
diff --git a/src/engine/naming_screen.c b/src/engine/naming_screen.c
index a20a15569..92a61eb8f 100644
--- a/src/engine/naming_screen.c
+++ b/src/engine/naming_screen.c
@@ -17,6 +17,7 @@
 #include "text.h"
 #include "trig.h"
 #include "util.h"
+#include "ewram.h"
 
 #ifdef ENGLISH
 #define COLUMN_COUNT 9
@@ -26,10 +27,6 @@
 
 extern u16 gKeyRepeatStartDelay;
 
-extern u8 unk_2000000[];
-
-#define namingScreenData (*(struct NamingScreenData *)(unk_2000000))
-
 extern u8 CreateMonIcon(u16 species, void (*callback)(struct Sprite *), s16 x, s16 y, u8 subpriority, u32 personality);
 
 const u32 gSpriteImage_83CE094[] = INCBIN_U32("graphics/naming_screen/pc_icon/0.4bpp");
diff --git a/src/engine/record_mixing.c b/src/engine/record_mixing.c
index 87fc6a81d..3ae0c4ea3 100644
--- a/src/engine/record_mixing.c
+++ b/src/engine/record_mixing.c
@@ -24,10 +24,7 @@
 #include "strings2.h"
 #include "task.h"
 #include "tv.h"
-
-extern u8 ewram[];
-#define unk_2018000 (*(struct PlayerRecords *)(ewram + 0x18000))
-#define unk_2008000 (*(struct PlayerRecords *)(ewram + 0x08000))
+#include "ewram.h"
 
 extern struct RecordMixingDayCareMail gUnknown_02038738;
 extern u16 gSpecialVar_0x8005;
@@ -69,31 +66,31 @@ void RecordMixing_PrepareExchangePacket(void)
     sub_80BC300();
     sub_80C045C();
 
-    memcpy(unk_2018000.secretBases, recordMixingSecretBases, sizeof(unk_2018000.secretBases));
-    memcpy(unk_2018000.tvShows, recordMixingTvShows, sizeof(unk_2018000.tvShows));
-    memcpy(unk_2018000.filler1004, gUnknown_083D0274, sizeof(unk_2008000.filler1004));
-    memcpy(unk_2018000.filler1044, gUnknown_083D0278, sizeof(unk_2008000.filler1044));
-    memcpy(unk_2018000.easyChatPairs, recordMixingEasyChatPairs, sizeof(unk_2018000.easyChatPairs));
+    memcpy(ewram_2018000.secretBases, recordMixingSecretBases, sizeof(ewram_2018000.secretBases));
+    memcpy(ewram_2018000.tvShows, recordMixingTvShows, sizeof(ewram_2018000.tvShows));
+    memcpy(ewram_2018000.filler1004, gUnknown_083D0274, sizeof(ewram_2008000.filler1004));
+    memcpy(ewram_2018000.filler1044, gUnknown_083D0278, sizeof(ewram_2008000.filler1044));
+    memcpy(ewram_2018000.easyChatPairs, recordMixingEasyChatPairs, sizeof(ewram_2018000.easyChatPairs));
     gUnknown_02038738.mail[0] = gSaveBlock1.daycareData.misc.mail[0];
     gUnknown_02038738.mail[1] = gSaveBlock1.daycareData.misc.mail[1];
     sub_8041324(gSaveBlock1.daycareData.mons, &gUnknown_02038738);
-    memcpy(&unk_2018000.filler10AC, gUnknown_083D0280, sizeof(struct RecordMixingDayCareMail));
-    memcpy(&unk_2018000.battleTowerRecord, gBattleTowerPlayerRecord, sizeof(struct BattleTowerRecord));
+    memcpy(&ewram_2018000.filler10AC, gUnknown_083D0280, sizeof(struct RecordMixingDayCareMail));
+    memcpy(&ewram_2018000.battleTowerRecord, gBattleTowerPlayerRecord, sizeof(struct BattleTowerRecord));
 
     if (GetMultiplayerId() == 0)
-        unk_2018000.filler11C8[0] = GetRecordMixingGift();
+        ewram_2018000.filler11C8[0] = GetRecordMixingGift();
 }
 
 void RecordMixing_ReceiveExchangePacket(u32 a)
 {
-    sub_80BD674(unk_2008000.secretBases, sizeof(struct PlayerRecords), a);
-    sub_80BFD44((u8 *)unk_2008000.tvShows, sizeof(struct PlayerRecords), a);
-    sub_80C0514(unk_2008000.filler1004, sizeof(struct PlayerRecords), a);
-    sub_80B9B1C(unk_2008000.filler1044, sizeof(struct PlayerRecords), a);
-    sub_80FA4E4(unk_2008000.easyChatPairs, sizeof(struct PlayerRecords), a);
-    sub_80B9C6C((u8 *)&unk_2008000.filler10AC, sizeof(struct PlayerRecords), a, unk_2008000.tvShows);
-    sub_80B9B70(&unk_2008000.battleTowerRecord, sizeof(struct PlayerRecords), a);
-    sub_80B9F3C(unk_2008000.filler11C8, a);
+    sub_80BD674(ewram_2008000.secretBases, sizeof(struct PlayerRecords), a);
+    sub_80BFD44((u8 *)ewram_2008000.tvShows, sizeof(struct PlayerRecords), a);
+    sub_80C0514(ewram_2008000.filler1004, sizeof(struct PlayerRecords), a);
+    sub_80B9B1C(ewram_2008000.filler1044, sizeof(struct PlayerRecords), a);
+    sub_80FA4E4(ewram_2008000.easyChatPairs, sizeof(struct PlayerRecords), a);
+    sub_80B9C6C((u8 *)&ewram_2008000.filler10AC, sizeof(struct PlayerRecords), a, ewram_2008000.tvShows);
+    sub_80B9B70(&ewram_2008000.battleTowerRecord, sizeof(struct PlayerRecords), a);
+    sub_80B9F3C(ewram_2008000.filler11C8, a);
 }
 
 #define tCounter data[0]
@@ -250,11 +247,11 @@ void sub_80B95F0(u8 taskId)
             task->tState = 0;
             task->data[5] = GetMultiplayerId_();
             task->func = Task_RecordMixing_SendPacket;
-            StorePtrInTaskData(&unk_2018000, &task->data[2]);
+            StorePtrInTaskData(&ewram_2018000, &task->data[2]);
             subTaskId = CreateTask(Task_RecordMixing_CopyReceiveBuffer, 0x50);
             task->data[10] = subTaskId;
             gTasks[subTaskId].data[0] = taskId;
-            StorePtrInTaskData((u8 *)&unk_2008000, &gTasks[subTaskId].data[5]);
+            StorePtrInTaskData((u8 *)&ewram_2008000, &gTasks[subTaskId].data[5]);
         }
         break;
     case 5:        // wait 60 frames
diff --git a/src/engine/save.c b/src/engine/save.c
index 5ea949cae..d5de2e408 100644
--- a/src/engine/save.c
+++ b/src/engine/save.c
@@ -5,14 +5,13 @@
 #include "load_save.h"
 #include "overworld.h"
 #include "save_failed_screen.h"
+#include "ewram.h"
 
 #define GETVALIDSTATUSBITFIELD ((1 << ARRAY_COUNT(gSaveSectionLocations)) - 1)
 #define GETCHUNKSIZE(chunk, n) ((sizeof(chunk) - (0xF80 * (n - 1))) >= 0xF80 ? 0xF80 : (sizeof(chunk) - (0xF80 * (n - 1))))
 #define GETBLOCKOFFSET(n) (0xF80 * (n - 1))
 #define TOTALNUMSECTORS ((ARRAY_COUNT(gSaveSectionLocations) * 2) + (ARRAY_COUNT(gHallOfFameSaveSectionLocations) * 2)) // there are 2 slots, so double each array count and get the sum.
 
-extern struct SaveSection unk_2000000; // slow save RAM
-
 u16 gLastWrittenSector;
 u32 gLastSaveCounter;
 u16 gLastKnownGoodSector;
@@ -24,7 +23,6 @@ u16 gSaveFileStatus;
 u32 gGameContinueCallback;
 
 extern struct PokemonStorage gPokemonStorage;
-extern struct HallOfFame gHallOfFame;
 
 static EWRAM_DATA u32 gLastSaveSectorStatus = 0; // used but in an unferenced function, so unused
 
@@ -48,8 +46,8 @@ const struct SaveSectionLocation gSaveSectionLocations[] =
 
 const struct SaveSectionLocation gHallOfFameSaveSectionLocations[] =
 {
-    {((u8 *) &gHallOfFame) + GETBLOCKOFFSET(1), GETCHUNKSIZE(struct HallOfFame, 1)}, // gHallOfFame is not a proper sym, so the struct must be used.
-    {((u8 *) &gHallOfFame) + GETBLOCKOFFSET(2), GETCHUNKSIZE(struct HallOfFame, 2)}
+    {((u8 *) eHallOfFame) + GETBLOCKOFFSET(1), GETCHUNKSIZE(struct HallOfFame, 1)}, // eHallOfFame is not a proper sym, so the struct must be used.
+    {((u8 *) eHallOfFame) + GETBLOCKOFFSET(2), GETCHUNKSIZE(struct HallOfFame, 2)}
 };
 
 const u8 gFlashSectors[] = { 0x1E, 0x1F };
@@ -95,7 +93,7 @@ u8 save_write_to_flash(u16 a1, const struct SaveSectionLocation *location)
     u32 retVal;
     u16 i;
 
-    gFastSaveSection = &unk_2000000;
+    gFastSaveSection = eSaveSection;
 
     if (a1 != 0xFFFF) // for link
     {
@@ -156,7 +154,7 @@ u8 HandleWriteSector(u16 a1, const struct SaveSectionLocation *location)
 u8 HandleWriteSectorNBytes(u8 sector, u8 *data, u16 size)
 {
     u16 i;
-    struct SaveSection *section = &unk_2000000;
+    struct SaveSection *section = eSaveSection;
 
     for (i = 0; i < sizeof(struct SaveSection); i++)
         ((char *)section)[i] = 0;
@@ -186,7 +184,7 @@ u8 TryWriteSector(u8 sector, u8 *data)
 
 u32 RestoreSaveBackupVarsAndIncrement(const struct SaveSectionLocation *location) // location is unused
 {
-    gFastSaveSection = &unk_2000000;
+    gFastSaveSection = eSaveSection;
     gLastKnownGoodSector = gLastWrittenSector;
     gLastSaveCounter = gSaveCounter;
     gLastWrittenSector++;
@@ -199,7 +197,7 @@ u32 RestoreSaveBackupVarsAndIncrement(const struct SaveSectionLocation *location
 
 u32 RestoreSaveBackupVars(const struct SaveSectionLocation *location) // only ever called once, and gSaveBlock2 is passed to this function. location is unused
 {
-    gFastSaveSection = &unk_2000000;
+    gFastSaveSection = eSaveSection;
     gLastKnownGoodSector = gLastWrittenSector;
     gLastSaveCounter = gSaveCounter;
     gUnknown_03005EB4 = 0;
@@ -369,7 +367,7 @@ u8 sub_81257F0(u16 a1, const struct SaveSectionLocation *location)
 u8 sub_812587C(u16 a1, const struct SaveSectionLocation *location)
 {
     u8 retVal;
-    gFastSaveSection = &unk_2000000;
+    gFastSaveSection = eSaveSection;
     if (a1 != 0xFFFF)
     {
         retVal = 0xFF;
@@ -537,7 +535,7 @@ u8 GetSaveValidStatus(const struct SaveSectionLocation *location)
 u8 sub_8125B88(u8 a1, u8 *data, u16 size)
 {
     u16 i;
-    struct SaveSection *section = &unk_2000000;
+    struct SaveSection *section = eSaveSection;
     DoReadFlashWholeSection(a1, section);
     if (section->security == UNKNOWN_CHECK_VALUE)
     {
@@ -764,7 +762,7 @@ u8 unref_sub_8125FA0(void)
 u8 unref_sub_8125FF0(u8 *data, u16 size)
 {
     u16 i;
-    struct UnkSaveSection *section = (struct UnkSaveSection *)&unk_2000000;
+    struct UnkSaveSection *section = (struct UnkSaveSection *)eSaveSection;
 
     for (i = 0; i < sizeof(struct SaveSection); i++)
         ((char *)section)[i] = 0;
diff --git a/src/engine/save_failed_screen.c b/src/engine/save_failed_screen.c
index 17bda237e..ba2d46546 100644
--- a/src/engine/save_failed_screen.c
+++ b/src/engine/save_failed_screen.c
@@ -11,6 +11,7 @@
 #include "strings.h"
 #include "task.h"
 #include "text.h"
+#include "ewram.h"
 
 // In English 1.0, the text window is too small, causing text to overflow.
 
@@ -22,8 +23,6 @@
 
 #define CLOCK_WIN_TOP (MSG_WIN_TOP - 4)
 
-extern u8 unk_2000000[];
-
 static EWRAM_DATA u16 gSaveFailedType = 0;
 static EWRAM_DATA u16 gSaveFailedClockInfo[9] = {0};
 
@@ -267,7 +266,7 @@ static void VBlankCB_UpdateClockGraphics(void)
 
 static bool8 VerifySectorWipe(u16 sector)
 {
-    u32 *ptr = (u32 *)&unk_2000000;
+    u32 *ptr = (u32 *)&gSharedMem;
     u16 i;
 
     ReadFlash(sector, 0, ptr, 4096);
diff --git a/src/engine/trade.c b/src/engine/trade.c
index 8fad94be8..7477b05ac 100644
--- a/src/engine/trade.c
+++ b/src/engine/trade.c
@@ -39,6 +39,7 @@
 #include "util.h"
 #include "battle_interface.h"
 #include "trade.h"
+#include "ewram.h"
 
 #ifdef ENGLISH
 #define sub_804A96C_alt sub_804A96C
@@ -217,9 +218,6 @@ extern u8 *gUnknown_020296CC[13];
 extern struct TradeEwramSubstruct *gUnknown_03004824;
 extern struct MailStruct gUnknown_02029700[16];
 
-#define ewram_2010000 (*(struct TradeEwramStruct *)(ewram + 0x10000))
-
-
 const u32 unref_data_820ABD4[] = {
     0x00000890,
     0x00003AC0,
@@ -4002,7 +4000,7 @@ static void sub_804B2D0(u8 whichParty, u8 a1)
         case 0:
             species = GetMonData(pokemon, MON_DATA_SPECIES2);
             personality = GetMonData(pokemon, MON_DATA_PERSONALITY);
-            HandleLoadSpecialPokePic(&gMonFrontPicTable[species], gMonFrontPicCoords[species].coords, gMonFrontPicCoords[species].y_offset, (u32)ewram, gUnknown_081FAF4C[whichParty * 2 + 1], species, personality);
+            HandleLoadSpecialPokePic(&gMonFrontPicTable[species], gMonFrontPicCoords[species].coords, gMonFrontPicCoords[species].y_offset, (u32)gSharedMem, gUnknown_081FAF4C[whichParty * 2 + 1], species, personality);
             LoadCompressedObjectPalette(GetMonSpritePalStruct(pokemon));
             gUnknown_03004828->tradeSpecies[whichParty] = species;
             break;
@@ -4729,12 +4727,12 @@ static void sub_804BBE8(u8 a0)
             gUnknown_03004828->bg1hofs = 0;
             REG_BG1CNT = BGCNT_PRIORITY(2) | BGCNT_CHARBASE(0) | BGCNT_SCREENBASE(5);
             LZDecompressVram(gUnknown_08D00000, BG_CHAR_ADDR(0));
-            CpuCopy16(gUnknown_08D00524, buffer = (u16 *)ewram, 0x1000);
+            CpuCopy16(gUnknown_08D00524, buffer = (u16 *)gSharedMem, 0x1000);
             LoadCompressedPalette(gUnknown_08D004E0, 0x70, 0x20);
             FillPalette(0, 0, 2);
             for (i = 0; i < 0x280; i ++)
                 buffer[i] |= 0x7000;
-            DmaCopy16Defvars(3, ewram, BG_SCREEN_ADDR(5), 0x500);
+            DmaCopy16Defvars(3, gSharedMem, BG_SCREEN_ADDR(5), 0x500);
             MenuZeroFillWindowRect(2, 15, 27, 18);
             break;
         case 6:
@@ -5706,8 +5704,8 @@ void sub_804E22C(void)
     const u16 *src;
     u16 *dest;
     LZDecompressVram(gUnknown_08D00000, (void *)VRAM);
-    CpuCopy16(gUnknown_08D00524, ewram, 0x1000);
-    src = (const u16 *)ewram;
+    CpuCopy16(gUnknown_08D00524, gSharedMem, 0x1000);
+    src = (const u16 *)gSharedMem;
     dest = BG_SCREEN_ADDR(5);
     DmaCopy16(3, src, dest, 0x500)
     LoadCompressedPalette(gUnknown_08D004E0, 0, 32);
diff --git a/src/engine/trainer_card.c b/src/engine/trainer_card.c
index 3e9dadbda..025d19ffc 100644
--- a/src/engine/trainer_card.c
+++ b/src/engine/trainer_card.c
@@ -20,6 +20,7 @@
 #include "task.h"
 #include "unknown_task.h"
 #include "util.h"
+#include "ewram.h"
 
 typedef void (*Callback)(void);
 
@@ -47,9 +48,6 @@ struct Struct2000000
     /*0x9C*/ u8 language; // 0x9C
 };
 
-extern u8 ewram[];
-#define ewram0 (*(struct Struct2000000 *)(ewram))
-
 extern struct LinkPlayerMapObject gLinkPlayerMapObjects[];
 
 EWRAM_DATA struct TrainerCard gTrainerCards[4] = {0};
@@ -70,7 +68,7 @@ extern const u16 gUnknown_083B5F8C[][4];
 
 const u8 gBadgesTiles[] = INCBIN_U8("graphics/trainer_card/badges.4bpp");
 // XXX: what is this?
-u8 *const ewram_ = ewram;
+u8 *const ewram_ = gSharedMem;
 
 bool8 sub_8093864(struct Task *);
 bool8 sub_80938A8(struct Task *);
@@ -189,14 +187,14 @@ void sub_8093110(Callback arg1)
 {
     sub_80932AC(arg1);
     SetMainCallback2(sub_8093174);
-    ewram0.language = GAME_LANGUAGE;
+    ewram0_2.language = GAME_LANGUAGE;
 }
 
 void sub_8093130(u8 playerIndex, Callback arg2)
 {
     sub_80932E4(playerIndex, arg2);
     SetMainCallback2(sub_8093174);
-    ewram0.language = gLinkPlayers[gLinkPlayerMapObjects[playerIndex].linkPlayerId].language;
+    ewram0_2.language = gLinkPlayers[gLinkPlayerMapObjects[playerIndex].linkPlayerId].language;
 }
 
 static void sub_8093174(void)
@@ -258,13 +256,13 @@ static void sub_8093254(void)
     LoadOam();
     ProcessSpriteCopyRequests();
     TransferPlttBuffer();
-    ewram0.var_6++;
-    if (ewram0.var_6 >= 60)
+    ewram0_2.var_6++;
+    if (ewram0_2.var_6 >= 60)
     {
-        ewram0.var_6 = 0;
-        ewram0.var_5 ^= 1;
+        ewram0_2.var_6 = 0;
+        ewram0_2.var_5 ^= 1;
     }
-    if (ewram0.var_4)
+    if (ewram0_2.var_4)
         DmaCopy16(3, gUnknown_03004DE0.filler0, gUnknown_03004DE0.unk780, sizeof(gUnknown_03004DE0.unk780));
 }
 
@@ -290,20 +288,20 @@ void sub_8093324(void)
 {
     u8 taskId = FindTaskIdByFunc(nullsub_60);
     struct Task *task = &gTasks[taskId];
-    ewram0.var_1 = task->data[TD_0];
+    ewram0_2.var_1 = task->data[TD_0];
 
-    LoadWordFromTwoHalfwords((u16 *)&task->data[TD_CALLBACK], (u32 *)&ewram0.var_60);
+    LoadWordFromTwoHalfwords((u16 *)&task->data[TD_CALLBACK], (u32 *)&ewram0_2.var_60);
 
-    if (ewram0.var_1)
+    if (ewram0_2.var_1)
     {
         struct TrainerCard(*trainerCards)[4] = &gTrainerCards;
         s16 var = task->data[TD_1];
         struct TrainerCard *dest = &(*trainerCards)[var];
-        memcpy(&ewram0.var_64, dest, sizeof(struct TrainerCard));
+        memcpy(&ewram0_2.var_64, dest, sizeof(struct TrainerCard));
     }
     else
     {
-        sub_8093390(&ewram0.var_64);
+        sub_8093390(&ewram0_2.var_64);
     }
 }
 
@@ -502,52 +500,52 @@ static void sub_8093688(void)
     u8 i;
 
     sub_8093324();
-    ewram0.var_0 = 0;
-    ewram0.var_3 = 0;
-    ewram0.var_4 = FALSE;
-    ewram0.var_2 = ewram0.var_64.stars;
-    ewram0.var_5 = 0;
-    ewram0.var_6 = 0;
+    ewram0_2.var_0 = 0;
+    ewram0_2.var_3 = 0;
+    ewram0_2.var_4 = FALSE;
+    ewram0_2.var_2 = ewram0_2.var_64.stars;
+    ewram0_2.var_5 = 0;
+    ewram0_2.var_6 = 0;
     for (i = 0; i < 4; i++)
-        EasyChat_GetWordText(ewram0.var_20[i], ewram0.var_64.var_28[i]);
+        EasyChat_GetWordText(ewram0_2.var_20[i], ewram0_2.var_64.var_28[i]);
     sub_80936D4();
 }
 
 void sub_80936D4(void)
 {
-    ewram0.var_7 = 0;
-    ewram0.var_8 = 0;
-    ewram0.var_9 = 0;
-    ewram0.var_a = 0;
-    ewram0.var_b = 0;
-    ewram0.var_c = 0;
-    ewram0.var_d = 0;
-    memset(ewram0.var_e, 0, sizeof(ewram0.var_e));
+    ewram0_2.var_7 = 0;
+    ewram0_2.var_8 = 0;
+    ewram0_2.var_9 = 0;
+    ewram0_2.var_a = 0;
+    ewram0_2.var_b = 0;
+    ewram0_2.var_c = 0;
+    ewram0_2.var_d = 0;
+    memset(ewram0_2.var_e, 0, sizeof(ewram0_2.var_e));
 
-    if (ewram0.var_64.hasPokedex)
-        ewram0.var_7++;
+    if (ewram0_2.var_64.hasPokedex)
+        ewram0_2.var_7++;
 
-    if (ewram0.var_64.firstHallOfFameA != 0
-     || ewram0.var_64.firstHallOfFameB != 0
-     || ewram0.var_64.firstHallOfFameC != 0)
-        ewram0.var_8++;
+    if (ewram0_2.var_64.firstHallOfFameA != 0
+     || ewram0_2.var_64.firstHallOfFameB != 0
+     || ewram0_2.var_64.firstHallOfFameC != 0)
+        ewram0_2.var_8++;
 
-    if (ewram0.var_64.linkBattleWins != 0 || ewram0.var_64.linkBattleLosses != 0)
-        ewram0.var_9++;
+    if (ewram0_2.var_64.linkBattleWins != 0 || ewram0_2.var_64.linkBattleLosses != 0)
+        ewram0_2.var_9++;
 
-    if (ewram0.var_64.battleTowerWins != 0 || ewram0.var_64.battleTowerLosses != 0)
-        ewram0.var_a++;
+    if (ewram0_2.var_64.battleTowerWins != 0 || ewram0_2.var_64.battleTowerLosses != 0)
+        ewram0_2.var_a++;
 
-    if (ewram0.var_64.contestsWithFriends != 0)
-        ewram0.var_b++;
+    if (ewram0_2.var_64.contestsWithFriends != 0)
+        ewram0_2.var_b++;
 
-    if (ewram0.var_64.pokeblocksWithFriends != 0)
-        ewram0.var_c++;
+    if (ewram0_2.var_64.pokeblocksWithFriends != 0)
+        ewram0_2.var_c++;
 
-    if (ewram0.var_64.pokemonTrades != 0)
-        ewram0.var_d++;
+    if (ewram0_2.var_64.pokemonTrades != 0)
+        ewram0_2.var_d++;
 
-    if (!ewram0.var_1)
+    if (!ewram0_2.var_1)
     {
         u32 badgeFlag;
         int i = 0;
@@ -556,7 +554,7 @@ void sub_80936D4(void)
         while (1)
         {
             if (FlagGet(badgeFlag))
-                ewram0.var_e[i]++;
+                ewram0_2.var_e[i]++;
             badgeFlag++;
             i++;
             if (badgeFlag > BADGE08_GET)
@@ -613,24 +611,24 @@ static void sub_809380C()
 
 static void sub_809382C(u8 taskId)
 {
-    while (gUnknown_083B5EBC[ewram0.var_0](&gTasks[taskId]) != 0)
+    while (gUnknown_083B5EBC[ewram0_2.var_0](&gTasks[taskId]) != 0)
         ;
 }
 
 bool8 sub_8093864(struct Task *task)
 {
-    ewram0.var_5 = gSaveBlock2.playTimeSeconds & 1;
-    ewram0.var_6 = gSaveBlock2.playTimeVBlanks;
+    ewram0_2.var_5 = gSaveBlock2.playTimeSeconds & 1;
+    ewram0_2.var_6 = gSaveBlock2.playTimeVBlanks;
     sub_80939A4();
     BeginNormalPaletteFade(0xFFFFFFFF, 0, 16, 0, 0);
-    ewram0.var_0++;
+    ewram0_2.var_0++;
     return FALSE;
 }
 
 bool8 sub_80938A8(struct Task *task)
 {
     if (!gPaletteFade.active)
-        ewram0.var_0++;
+        ewram0_2.var_0++;
     return FALSE;
 }
 
@@ -638,19 +636,19 @@ bool8 sub_80938CC(struct Task *task)
 {
     if (gMain.newKeys & B_BUTTON)
     {
-        ewram0.var_0 = 5;
+        ewram0_2.var_0 = 5;
         return TRUE;
     }
     else if (gMain.newKeys & A_BUTTON)
     {
-        if (ewram0.var_3 != 0)
+        if (ewram0_2.var_3 != 0)
         {
-            ewram0.var_0 = 5;
+            ewram0_2.var_0 = 5;
         }
         else
         {
-            ewram0.var_3 ^= 1;
-            ewram0.var_0 = 3;
+            ewram0_2.var_3 ^= 1;
+            ewram0_2.var_0 = 3;
         }
         return TRUE;
     }
@@ -661,14 +659,14 @@ bool8 sub_8093918(struct Task *task)
 {
     sub_8093A28();
     PlaySE(SE_CARD);
-    ewram0.var_0++;
+    ewram0_2.var_0++;
     return FALSE;
 }
 
 bool8 sub_8093938(struct Task *task)
 {
     if (sub_8093A48())
-        ewram0.var_0 = 2;
+        ewram0_2.var_0 = 2;
     return FALSE;
 }
 
@@ -676,14 +674,14 @@ bool8 sub_8093954(struct Task *task)
 {
     sub_80939C0();
     BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 16, 0);
-    ewram0.var_0++;
+    ewram0_2.var_0++;
     return FALSE;
 }
 
 bool8 sub_8093980(struct Task *task)
 {
     if (!gPaletteFade.active)
-        SetMainCallback2((MainCallback)ewram0.var_60);
+        SetMainCallback2((MainCallback)ewram0_2.var_60);
     return FALSE;
 }
 
@@ -706,9 +704,9 @@ static void sub_80939DC(u8 taskId)
     u8 buffer[32];
     struct Task *task = &gTasks[taskId];
 
-    if (ewram0.var_5 != task->data[TD_1])
+    if (ewram0_2.var_5 != task->data[TD_1])
     {
-        task->data[TD_1] = ewram0.var_5;
+        task->data[TD_1] = ewram0_2.var_5;
         task->data[TD_0] ^= TRUE;
     }
     TrainerCard_Front_PrintPlayTime(buffer, task->data[TD_0]);
@@ -741,12 +739,12 @@ bool8 sub_8093AA0(struct Task *task)
 {
     s32 i;
 
-    ewram0.var_4 = FALSE;
+    ewram0_2.var_4 = FALSE;
     dp12_8087EA4();
     for (i = 0; i < ARRAY_COUNT(gUnknown_03004DE0.unk780); i++)
         gUnknown_03004DE0.unk780[i] = -4;
     SetHBlankCallback(sub_8093D7C);
-    ewram0.var_4 = TRUE;
+    ewram0_2.var_4 = TRUE;
     task->data[0]++;
     return FALSE;
 }
@@ -763,7 +761,7 @@ bool8 sub_8093AF0(struct Task *task)
     u32 sp0;
     s16 i;
 
-    ewram0.var_4 = 0;
+    ewram0_2.var_4 = 0;
     task->data[1] += 3;
     if (task->data[1] > 79)
         task->data[1] = 79;
@@ -792,7 +790,7 @@ bool8 sub_8093AF0(struct Task *task)
     }
     for (; i < 160; i++)
         gUnknown_03004DE0.filler0[i] = -4 + (u16)(r10 >> 16);
-    ewram0.var_4 = 1;
+    ewram0_2.var_4 = 1;
     if (task->data[1] > 0x4A)
         task->data[0]++;
     return FALSE;
@@ -955,7 +953,7 @@ bool8 sub_8093C0C(struct Task *task)
 {
     sub_80939C0();
     sub_8093DAC();
-    if (!ewram0.var_3)
+    if (!ewram0_2.var_3)
         sub_80939A4();
     task->data[0]++;
     return TRUE;
@@ -1115,7 +1113,7 @@ bool8 sub_8093D50(struct Task *task)
 {
     u8 taskId;
 
-    ewram0.var_4 = FALSE;
+    ewram0_2.var_4 = FALSE;
     SetHBlankCallback(NULL);
     sub_8093E04();
     taskId = FindTaskIdByFunc(sub_8093A68);
@@ -1134,7 +1132,7 @@ void sub_8093D7C(void)
 
 static void sub_8093DAC(void)
 {
-    if (ewram0.var_3)
+    if (ewram0_2.var_3)
         sub_8093DEC();
     else
         sub_8093DC8();
@@ -1203,23 +1201,23 @@ extern const u16 *const gUnknown_083B5EF8[];
 
 void sub_8093EA0(void)
 {
-    LoadPalette(gUnknown_083B5EF8[ewram0.var_2], 0, 48 * 2);
+    LoadPalette(gUnknown_083B5EF8[ewram0_2.var_2], 0, 48 * 2);
     LoadPalette(gBadgesPalette, 48, 16 * 2);
     LoadPalette(gUnknown_083B5F4C, 64, 16 * 2);
-    if (ewram0.var_64.gender != MALE)
+    if (ewram0_2.var_64.gender != MALE)
         LoadPalette(gUnknown_083B5F0C, 16, 16 * 2);
 }
 
 static void sub_8093EF8(void)
 {
-    LoadTrainerGfx_TrainerCard(ewram0.var_64.gender, 80, (void *)(VRAM + 0x1880));
+    LoadTrainerGfx_TrainerCard(ewram0_2.var_64.gender, 80, (void *)(VRAM + 0x1880));
 }
 
 static void sub_8093F14(void)
 {
     const void *arr[] = {gUnknown_08E8CAC0, gUnknown_08E8D4C0};
 
-    CpuFastSet(arr[ewram0.var_1], (void *)(VRAM + 0x4800), 0x140);
+    CpuFastSet(arr[ewram0_2.var_1], (void *)(VRAM + 0x4800), 0x140);
 }
 
 // I don't really know where to put the data. It's in such a weird order.
@@ -1269,7 +1267,7 @@ static void sub_8093FD0(void)
 {
     u16 *ptr = (u16 *)(VRAM + 0x4000);
     s16 i = 15;
-    s16 var = 15 + ewram0.var_2;
+    s16 var = 15 + ewram0_2.var_2;
 
     while (i < var)
     {
@@ -1285,7 +1283,7 @@ static void sub_8093FD0(void)
 
 static void sub_8094038(void)
 {
-    if (ewram0.var_1 == 0)
+    if (ewram0_2.var_1 == 0)
     {
         u16 *ptr = (u16 *)(VRAM + 0x4000);
         s16 i;
@@ -1293,7 +1291,7 @@ static void sub_8094038(void)
 
         for (i = 0, r2 = 4; i < 8; i++, r2 += 3)
         {
-            if (ewram0.var_e[i] != 0)
+            if (ewram0_2.var_e[i] != 0)
             {
                 ptr[15 * 32 + r2 + 0] = gUnknown_083B5F8C[i][0] | 0x3000;
                 ptr[15 * 32 + r2 + 1] = gUnknown_083B5F8C[i][1] | 0x3000;
@@ -1332,8 +1330,8 @@ static void sub_8094140(void)
     BasicInitMenuWindow(&WindowConfig_TrainerCard_Back_Values);
 
     buffer = gStringVar1;
-    StringCopy(buffer, ewram0.var_64.playerName);
-    ConvertInternationalString(buffer, ewram0.language);
+    StringCopy(buffer, ewram0_2.var_64.playerName);
+    ConvertInternationalString(buffer, ewram0_2.language);
     MenuPrint(buffer, 7, 5);
 
     TrainerCard_Front_PrintTrainerID();
@@ -1366,26 +1364,26 @@ static void TrainerCard_Front_PrintTrainerID(void)
 {
     u8 buffer[8];
 
-    ConvertIntToDecimalStringN(buffer, ewram0.var_64.trainerId, STR_CONV_MODE_LEADING_ZEROS, 5);
+    ConvertIntToDecimalStringN(buffer, ewram0_2.var_64.trainerId, STR_CONV_MODE_LEADING_ZEROS, 5);
     MenuPrint(buffer, 20, 2);
 }
 
 static void TrainerCard_Front_PrintMoney(void)
 {
-    sub_80B7AEC(ewram0.var_64.money, 16, 8);
+    sub_80B7AEC(ewram0_2.var_64.money, 16, 8);
 }
 
 static void TrainerCard_Front_PrintPokedexCount(void)
 {
     u8 buffer[16];
 
-    if (ewram0.var_7 == FALSE)
+    if (ewram0_2.var_7 == FALSE)
     {
         sub_8094110();
     }
     else
     {
-        ConvertIntToDecimalStringN(buffer, ewram0.var_64.pokedexSeen, STR_CONV_MODE_LEFT_ALIGN, 3);
+        ConvertIntToDecimalStringN(buffer, ewram0_2.var_64.pokedexSeen, STR_CONV_MODE_LEFT_ALIGN, 3);
         MenuPrint_RightAligned(buffer, 16, 10);
     }
 }
@@ -1398,10 +1396,10 @@ static void TrainerCard_Front_PrintPlayTime(u8 *arg1, s16 colon)
 
     playTimeHours = gSaveBlock2.playTimeHours;
     playTimeMinutes = gSaveBlock2.playTimeMinutes;
-    if (ewram0.var_1 != 0)
+    if (ewram0_2.var_1 != 0)
     {
-        playTimeHours = ewram0.var_64.playTimeHours;
-        playTimeMinutes = ewram0.var_64.playTimeMinutes;
+        playTimeHours = ewram0_2.var_64.playTimeHours;
+        playTimeMinutes = ewram0_2.var_64.playTimeMinutes;
     }
     FormatPlayTime(buffer, playTimeHours, playTimeMinutes, colon);
     sub_8072C74(arg1, buffer, 48, 1);
@@ -1411,20 +1409,20 @@ static void sub_809429C(void)
 {
     u8 *str;
 
-    if (ewram0.var_1 != 0)
+    if (ewram0_2.var_1 != 0)
     {
         str = gStringVar1;
-        str = StringCopy(str, ewram0.var_20[0]);
+        str = StringCopy(str, ewram0_2.var_20[0]);
         str[0] = 00;
         str++;
-        str = StringCopy(str, ewram0.var_20[1]);
+        str = StringCopy(str, ewram0_2.var_20[1]);
         MenuPrint(gStringVar1, 2, 14);
 
         str = gStringVar1;
-        str = StringCopy(str, ewram0.var_20[2]);
+        str = StringCopy(str, ewram0_2.var_20[2]);
         str[0] = 00;
         str++;
-        str = StringCopy(str, ewram0.var_20[3]);
+        str = StringCopy(str, ewram0_2.var_20[3]);
         MenuPrint(gStringVar1, 2, 16);
     }
 }
@@ -1434,8 +1432,8 @@ static void TrainerCard_Back_PrintName(void)
     u8 *str;
 
     str = gStringVar1;
-    StringCopy(str, ewram0.var_64.playerName);
-    ConvertInternationalString(str, ewram0.language);
+    StringCopy(str, ewram0_2.var_64.playerName);
+    ConvertInternationalString(str, ewram0_2.language);
 
 #if ENGLISH
     StringAppend(str, gOtherText_TrainersTrainerCard);
@@ -1448,7 +1446,7 @@ static void TrainerCard_Back_PrintName(void)
 
 static void TrainerCard_Back_PrintHallOfFameTime_Label(void)
 {
-    if (ewram0.var_8 != 0)
+    if (ewram0_2.var_8 != 0)
         MenuPrint(gOtherText_FirstHOF, 3, 5);
 }
 
@@ -1456,21 +1454,21 @@ static void TrainerCard_Back_PrintHallOfFameTime(void)
 {
     u8 *str;
 
-    if (ewram0.var_8 != 0)
+    if (ewram0_2.var_8 != 0)
     {
         str = gStringVar1;
-        str = ConvertIntToDecimalStringN(str, ewram0.var_64.firstHallOfFameA, STR_CONV_MODE_RIGHT_ALIGN, 3);
+        str = ConvertIntToDecimalStringN(str, ewram0_2.var_64.firstHallOfFameA, STR_CONV_MODE_RIGHT_ALIGN, 3);
         str = StringCopy(str, gUnknown_083B5EF4);
-        str = ConvertIntToDecimalStringN(str, ewram0.var_64.firstHallOfFameB, STR_CONV_MODE_LEADING_ZEROS, 2);
+        str = ConvertIntToDecimalStringN(str, ewram0_2.var_64.firstHallOfFameB, STR_CONV_MODE_LEADING_ZEROS, 2);
         str = StringCopy(str, gUnknown_083B5EF4);
-        str = ConvertIntToDecimalStringN(str, ewram0.var_64.firstHallOfFameC, STR_CONV_MODE_LEADING_ZEROS, 2);
+        str = ConvertIntToDecimalStringN(str, ewram0_2.var_64.firstHallOfFameC, STR_CONV_MODE_LEADING_ZEROS, 2);
         MenuPrint_RightAligned(gStringVar1, 28, 5);
     }
 }
 
 static void TrainerCard_Back_PrintLinkBattlesLabel(void)
 {
-    if (ewram0.var_9 != 0)
+    if (ewram0_2.var_9 != 0)
         MenuPrint(gOtherText_LinkCableBattles, 3, 7);
 }
 
@@ -1478,19 +1476,19 @@ static void TrainerCard_Back_PrintLinkBattles(void)
 {
     u8 buffer[16];
 
-    if (ewram0.var_9 != 0)
+    if (ewram0_2.var_9 != 0)
     {
-        ConvertIntToDecimalString(buffer, ewram0.var_64.linkBattleWins);
+        ConvertIntToDecimalString(buffer, ewram0_2.var_64.linkBattleWins);
         MenuPrint_RightAligned(buffer, 22, 7);
 
-        ConvertIntToDecimalString(buffer, ewram0.var_64.linkBattleLosses);
+        ConvertIntToDecimalString(buffer, ewram0_2.var_64.linkBattleLosses);
         MenuPrint_RightAligned(buffer, 28, 7);
     }
 }
 
 static void TrainerCard_Back_PrintBattleTower_Label(void)
 {
-    if (ewram0.var_a != 0)
+    if (ewram0_2.var_a != 0)
         MenuPrint(gOtherText_BattleTowerWinRecord, 3, 15);
 }
 
@@ -1498,19 +1496,19 @@ static void TrainerCard_Back_PrintBattleTower(void)
 {
     u8 buffer[16];
 
-    if (ewram0.var_a != 0)
+    if (ewram0_2.var_a != 0)
     {
-        sub_8072C44(buffer, ewram0.var_64.battleTowerWins, 24, 1);
+        sub_8072C44(buffer, ewram0_2.var_64.battleTowerWins, 24, 1);
         MenuPrint_PixelCoords(buffer, 112, 120, 0);
 
-        sub_8072C44(buffer, ewram0.var_64.battleTowerLosses, 24, 1);
+        sub_8072C44(buffer, ewram0_2.var_64.battleTowerLosses, 24, 1);
         MenuPrint_PixelCoords(buffer, 149, 120, 0);
     }
 }
 
 static void TrainerCard_Back_PrintLinkContests_Label(void)
 {
-    if (ewram0.var_b != 0)
+    if (ewram0_2.var_b != 0)
         MenuPrint(gOtherText_ContestRecord, 3, 13);
 }
 
@@ -1518,16 +1516,16 @@ static void TrainerCard_Back_PrintLinkContests(void)
 {
     u8 buffer[8];
 
-    if (ewram0.var_b != 0)
+    if (ewram0_2.var_b != 0)
     {
-        ConvertIntToDecimalStringN(buffer, ewram0.var_64.contestsWithFriends, STR_CONV_MODE_RIGHT_ALIGN, 3);
+        ConvertIntToDecimalStringN(buffer, ewram0_2.var_64.contestsWithFriends, STR_CONV_MODE_RIGHT_ALIGN, 3);
         MenuPrint_RightAligned(buffer, 28, 13);
     }
 }
 
 static void TrainerCard_Back_PrintLinkPokeblocks_Label(void)
 {
-    if (ewram0.var_c != 0)
+    if (ewram0_2.var_c != 0)
         MenuPrint(gOtherText_MixingRecord, 3, 11);
 }
 
@@ -1535,16 +1533,16 @@ static void TrainerCard_Back_PrintLinkPokeblocks(void)
 {
     u8 buffer[8];
 
-    if (ewram0.var_c != 0)
+    if (ewram0_2.var_c != 0)
     {
-        ConvertIntToDecimalStringN(buffer, ewram0.var_64.pokeblocksWithFriends, STR_CONV_MODE_RIGHT_ALIGN, 5);
+        ConvertIntToDecimalStringN(buffer, ewram0_2.var_64.pokeblocksWithFriends, STR_CONV_MODE_RIGHT_ALIGN, 5);
         MenuPrint_RightAligned(buffer, 28, 11);
     }
 }
 
 static void TrainerCard_Back_PrintPokemonTrades_Label(void)
 {
-    if (ewram0.var_d != 0)
+    if (ewram0_2.var_d != 0)
         MenuPrint(gOtherText_TradeRecord, 3, 9);
 }
 
@@ -1552,9 +1550,9 @@ static void TrainerCard_Back_PrintPokemonTrades(void)
 {
     u8 buffer[8];
 
-    if (ewram0.var_d != 0)
+    if (ewram0_2.var_d != 0)
     {
-        ConvertIntToDecimalStringN(buffer, ewram0.var_64.pokemonTrades, STR_CONV_MODE_RIGHT_ALIGN, 5);
+        ConvertIntToDecimalStringN(buffer, ewram0_2.var_64.pokemonTrades, STR_CONV_MODE_RIGHT_ALIGN, 5);
         MenuPrint_RightAligned(buffer, 28, 9);
     }
 }
diff --git a/src/field/battle_tower.c b/src/field/battle_tower.c
index 1b5759f49..3e60d3a9a 100644
--- a/src/field/battle_tower.c
+++ b/src/field/battle_tower.c
@@ -24,6 +24,7 @@
 #include "trainer.h"
 #include "tv.h"
 #include "vars.h"
+#include "ewram.h"
 
 #if ENGLISH
 #include "../data/battle_tower/trainers.h"
@@ -278,9 +279,6 @@ extern u8 gBattleOutcome;
 extern struct Pokemon gUnknown_030042FC[];
 extern struct BattlePokemon gBattleMons[];
 
-#define ewram160FB (ewram[0x160FB])
-
-
 void sub_8134548(void)
 {
 	u8 var1 = 0;
diff --git a/src/field/berry_tag_screen.c b/src/field/berry_tag_screen.c
index 1413a02ca..55405138d 100644
--- a/src/field/berry_tag_screen.c
+++ b/src/field/berry_tag_screen.c
@@ -28,7 +28,7 @@ struct Struct2000000
     /*0x1FFFF*/ u8 var_1FFFF;
 };
 
-extern struct Struct2000000 unk_2000000;
+extern struct Struct2000000 gSharedMem;
 extern u16 gUnknown_030041B4;
 
 static EWRAM_DATA u8 gUnknown_0203932C = 0;
@@ -119,13 +119,13 @@ static bool8 sub_8146058(void)
     case 5:
         if (!MultistepInitMenuWindowContinue())
             break;
-        unk_2000000.var_1FFFF = 0;
+        gSharedMem.var_1FFFF = 0;
         gMain.state += 1;
         break;
     case 6:
         if (!sub_81462B8())
             break;
-        unk_2000000.var_1FFFF = 0;
+        gSharedMem.var_1FFFF = 0;
         gMain.state += 1;
         break;
     case 7:
@@ -191,19 +191,19 @@ bool8 sub_81462B8(void)
     u16 i;
     void *addr;
 
-    switch (unk_2000000.var_1FFFF)
+    switch (gSharedMem.var_1FFFF)
     {
     case 0:
         LZDecompressVram(gBerryCheck_Gfx, (void *)VRAM);
-        unk_2000000.var_1FFFF += 1;
+        gSharedMem.var_1FFFF += 1;
         break;
     case 1:
         LZDecompressVram(gUnknown_08E788E4, (void *)VRAM + 0x2800);
-        unk_2000000.var_1FFFF += 1;
+        gSharedMem.var_1FFFF += 1;
         break;
     case 2:
         LZDecompressVram(gUnknown_08E78A84, (void *)VRAM + 0x3000);
-        unk_2000000.var_1FFFF += 1;
+        gSharedMem.var_1FFFF += 1;
         break;
     case 3:
         for (i = 0; i < 0x400; i++)
@@ -215,19 +215,19 @@ bool8 sub_81462B8(void)
         }
         addr = (void *)(VRAM + 0x3800);
         DmaCopy16(3, gBGTilemapBuffers[2], addr, 0x800);
-        unk_2000000.var_1FFFF += 1;
+        gSharedMem.var_1FFFF += 1;
         break;
     case 4:
         LoadCompressedPalette(gBerryCheck_Pal, 0, 96 * 2);
-        unk_2000000.var_1FFFF += 1;
+        gSharedMem.var_1FFFF += 1;
         break;
     case 5:
         LoadCompressedObjectPic(&gUnknown_083C1F74);
-        unk_2000000.var_1FFFF += 1;
+        gSharedMem.var_1FFFF += 1;
         break;
     case 6:
         LoadCompressedObjectPalette(&gUnknown_083C1F7C);
-        unk_2000000.var_1FFFF = 0;
+        gSharedMem.var_1FFFF = 0;
         return TRUE;
     }
 
diff --git a/src/field/choose_party.c b/src/field/choose_party.c
index adb210e7b..891ee48b8 100644
--- a/src/field/choose_party.c
+++ b/src/field/choose_party.c
@@ -17,6 +17,7 @@
 #include "string_util.h"
 #include "task.h"
 #include "text.h"
+#include "ewram.h"
 
 extern u8 gPlayerPartyCount;
 extern u8 gLastFieldPokeMenuOpened;
@@ -34,7 +35,7 @@ extern void sub_806BC3C(u8, u8);
 extern void ShowPokemonSummaryScreen(struct Pokemon *, u8, u8, void (*)(void), int);
 extern u8 GetMonStatusAndPokerus();
 extern void PartyMenuPrintHP();
-extern bool8 sub_80F9344(void);
+extern bool8 sub_80F9344(void); 
 
 static void ClearPartySelection(void);
 static bool8 IsMonAllowedInBattleTower(struct Pokemon *);
diff --git a/src/field/decoration.c b/src/field/decoration.c
index 59c19c20a..bdeaaf91d 100644
--- a/src/field/decoration.c
+++ b/src/field/decoration.c
@@ -18,6 +18,7 @@
 #include "event_data.h"
 #include "field_weather.h"
 #include "decoration.h"
+#include "ewram.h"
 
 EWRAM_DATA u8 *gUnknown_020388D0 = NULL;
 EWRAM_DATA u8 gUnknown_020388D4 = 0;
@@ -1555,7 +1556,7 @@ const struct SpriteTemplate gSpriteTemplate_83ECA88 = {
 
 const struct YesNoFuncTable gUnknown_083ECAA0 = {.yesFunc = sub_8101848, .noFunc = sub_80FED3C};
 
-u8 *const unref_label_083ECAA8[] = {ewram};
+u8 *const unref_label_083ECAA8[] = {gSharedMem};
 
 // text
 
diff --git a/src/field/dewford_trend.c b/src/field/dewford_trend.c
index aaf4dd66a..102784066 100644
--- a/src/field/dewford_trend.c
+++ b/src/field/dewford_trend.c
@@ -5,8 +5,7 @@
 #include "link.h"
 #include "rng.h"
 #include "text.h"
-
-extern u8 unk_2000000[];
+#include "ewram.h"
 
 extern u16 gScriptResult;
 extern u16 gSpecialVar_0x8004;
diff --git a/src/field/field_region_map.c b/src/field/field_region_map.c
index 7cb22e5df..73e101d8f 100644
--- a/src/field/field_region_map.c
+++ b/src/field/field_region_map.c
@@ -7,6 +7,7 @@
 #include "sprite.h"
 #include "strings2.h"
 #include "text.h"
+#include "ewram.h"
 
 struct RegionMapStruct
 {
@@ -24,14 +25,11 @@ struct UnkStruct
     u16 unk888;
 };
 
-extern u8 ewram[];
-#define unk_2000000 (*(struct UnkStruct *)(ewram))
-
 void FieldInitRegionMap(MainCallback callback)
 {
     SetVBlankCallback(NULL);
-    unk_2000000.unk888 = 0;
-    unk_2000000.callback = callback;
+    ewram0_5.unk888 = 0;
+    ewram0_5.callback = callback;
     SetMainCallback2(CB2_FieldInitRegionMap);
 }
 
@@ -49,7 +47,7 @@ void CB2_FieldInitRegionMap(void)
     ResetSpriteData();
     FreeAllSpritePalettes();
     // TODO: remove this cast
-    InitRegionMap((void *)&unk_2000000.unk8, 0);
+    InitRegionMap((void *)&ewram0_5.unk8, 0);
     CreateRegionMapPlayerIcon(0, 0);
     CreateRegionMapCursor(1, 1);
     SetUpWindowConfig(&gWindowConfig_81E709C);
@@ -82,15 +80,15 @@ void CB2_FieldRegionMap(void)
 
 void sub_813EFDC(void)
 {
-    switch (unk_2000000.unk888)
+    switch (ewram0_5.unk888)
     {
     case 0:
         REG_DISPCNT = DISPCNT_MODE_1 | DISPCNT_OBJ_1D_MAP | DISPCNT_BG0_ON | DISPCNT_BG2_ON | DISPCNT_OBJ_ON;
-        unk_2000000.unk888++;
+        ewram0_5.unk888++;
         break;
     case 1:
         if (!gPaletteFade.active)
-            unk_2000000.unk888++;
+            ewram0_5.unk888++;
         break;
     case 2:
         switch (sub_80FAB60())
@@ -100,18 +98,18 @@ void sub_813EFDC(void)
             break;
         case 4:
         case 5:
-            unk_2000000.unk888++;
+            ewram0_5.unk888++;
         }
         break;
     case 3:
         BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 0x10, 0);
-        unk_2000000.unk888++;
+        ewram0_5.unk888++;
         break;
     case 4:
         if (!gPaletteFade.active)
         {
             FreeRegionMapIconResources();
-            SetMainCallback2(unk_2000000.callback);
+            SetMainCallback2(ewram0_5.callback);
         }
         break;
     }
@@ -120,6 +118,6 @@ void sub_813EFDC(void)
 void sub_813F0C8(void)
 {
     MenuFillWindowRectWithBlankTile(17, 17, 28, 18);
-    if (unk_2000000.unk8.unk16)
-        MenuPrint(unk_2000000.unk8.str, 17, 17);
+    if (ewram0_5.unk8.unk16)
+        MenuPrint(ewram0_5.unk8.str, 17, 17);
 }
diff --git a/src/field/field_tasks.c b/src/field/field_tasks.c
index da6f162c2..767753da2 100644
--- a/src/field/field_tasks.c
+++ b/src/field/field_tasks.c
@@ -1,7 +1,3 @@
-//
-
-//
-
 #include "global.h"
 #include "task.h"
 #include "main.h"
diff --git a/src/field/fldeff_cut.c b/src/field/fldeff_cut.c
index 00643a979..00cabe5c0 100644
--- a/src/field/fldeff_cut.c
+++ b/src/field/fldeff_cut.c
@@ -16,8 +16,7 @@
 #include "sprite.h"
 #include "task.h"
 #include "trig.h"
-
-extern u8 gCutGrassSpriteArray[8]; // seems to be an array of 8 sprite IDs
+#include "ewram.h"
 
 extern void (*gFieldCallback)(void);
 extern void (*gUnknown_03005CE4)(void);
@@ -135,9 +134,9 @@ bool8 FldEff_CutGrass(void)
     // populate sprite ID array
     for(i = 0; i < 8; i++)
     {
-        gCutGrassSpriteArray[i] = CreateSprite((struct SpriteTemplate *)&gSpriteTemplate_CutGrass,
+        eCutGrassSpriteArray[i] = CreateSprite((struct SpriteTemplate *)&gSpriteTemplate_CutGrass,
         gSprites[gPlayerAvatar.spriteId].oam.x + 8, gSprites[gPlayerAvatar.spriteId].oam.y + 20, 0);
-        gSprites[gCutGrassSpriteArray[i]].data2 = 32 * i;
+        gSprites[eCutGrassSpriteArray[i]].data2 = 32 * i;
     }
     return 0;
 }
@@ -273,8 +272,8 @@ void sub_80A2AB8(void)
     u8 i;
 
     for (i = 1; i < 8; i++)
-        DestroySprite(&gSprites[gCutGrassSpriteArray[i]]);
-    FieldEffectStop(&gSprites[gCutGrassSpriteArray[0]], FLDEFF_CUT_GRASS);
+        DestroySprite(&gSprites[eCutGrassSpriteArray[i]]);
+    FieldEffectStop(&gSprites[eCutGrassSpriteArray[0]], FLDEFF_CUT_GRASS);
     sub_8064E2C();
     ScriptContext2_Disable();
 }
diff --git a/src/field/fldeff_softboiled.c b/src/field/fldeff_softboiled.c
index 22f9c13f5..b2c3d9bd1 100644
--- a/src/field/fldeff_softboiled.c
+++ b/src/field/fldeff_softboiled.c
@@ -9,6 +9,7 @@
 #include "sprite.h"
 #include "strings.h"
 #include "task.h"
+#include "ewram.h"
 
 struct Struct2001000 {
     u8 unk0;
@@ -38,15 +39,9 @@ struct Struct201C000 {
 #define WINDOW_RIGHT 29
 #endif
 
-#define EWRAM_1000 (*(struct Struct2001000 *)(unk_2000000 + 0x1000))
-#define EWRAM_1B000_2 (*(struct Struct201B000 *)(unk_2000000 + 0x1B000))
-#define EWRAM_1C000 (*(struct Struct201C000 *)(unk_2000000 + 0x1C000))
-
 // extern
 extern u8 gUnknown_0202E8F6;
 extern u8 gLastFieldPokeMenuOpened;
-
-extern u8 unk_2000000[];
 extern u8 gUnknown_0202E8F4;
 
 // Static
diff --git a/src/field/item_menu.c b/src/field/item_menu.c
index c508bcacf..09542cc6d 100644
--- a/src/field/item_menu.c
+++ b/src/field/item_menu.c
@@ -34,9 +34,9 @@
 #include "task.h"
 #include "text.h"
 #include "unknown_task.h"
+#include "ewram.h"
 
 // External stuff
-extern u8 ewram[];
 extern void gpu_pal_allocator_reset__manage_upper_four(void);
 extern void sub_80F9020(void);
 extern void sub_80F9988();
@@ -158,12 +158,6 @@ extern struct PocketScrollState gBagPocketScrollStates[];
 extern struct ItemSlot *gCurrentBagPocketItemSlots;  // selected pocket item slots
 extern const u8 Event_NoRegisteredItem[];
 
-#define ewramBerryPic             (ewram + 0)
-#define ewramBerryPicTemp         (ewram + 0x1000)
-#define ewramSavedItemsPocket     ((struct ItemSlot *)(ewram + 0x1E000))  // saved items pocket (for Wally battle)
-#define ewramSavedPokeballsPocket ((struct ItemSlot *)(ewram + 0x1F000))  // saved Pokeballs pocket (for Wally battle)
-#define ewramBagSetupStep         (ewram[0x1FFFF])
-
 extern const struct CompressedSpriteSheet sMaleBagSpriteSheet;
 extern const struct CompressedSpriteSheet sFemaleBagSpriteSheet;
 extern const struct CompressedSpritePalette sBagSpritePalette;
diff --git a/src/field/party_menu.c b/src/field/party_menu.c
index 7a519d737..25fd63463 100644
--- a/src/field/party_menu.c
+++ b/src/field/party_menu.c
@@ -25,7 +25,6 @@
 #include "pokemon_summary_screen.h"
 #include "rom_8077ABC.h"
 #include "rom_8094928.h"
-#include "script_pokemon_80F9.h"
 #include "songs.h"
 #include "sound.h"
 #include "species.h"
@@ -35,6 +34,8 @@
 #include "task.h"
 #include "unknown_task.h"
 #include "util.h"
+#include "script_pokemon_80F9.h"
+#include "ewram.h"
 
 struct Coords8
 {
@@ -483,9 +484,6 @@ struct Unk201FE00
     u8 unkE02;
 };
 
-#define ewram1C000 (*(struct Unk201C000 *)(ewram + 0x1C000))
-#define ewram1FE00 (*(struct Unk201FE00 *)(ewram + 0x1FE00))
-
 extern u16 gBattleTypeFlags;
 extern u8 gTileBuffer[];
 extern u8 gUnknown_0202E8F4;
diff --git a/src/field/player_pc.c b/src/field/player_pc.c
index d01829266..ce78a88d8 100644
--- a/src/field/player_pc.c
+++ b/src/field/player_pc.c
@@ -20,6 +20,7 @@
 #include "mail.h"
 #include "overworld.h"
 #include "player_pc.h"
+#include "ewram.h"
 
 extern void DisplayItemMessageOnField(u8, const u8*, TaskFunc, u16);
 extern void DoPlayerPCDecoration(u8);
@@ -271,14 +272,14 @@ static void PlayerPC_ItemStorage(u8 taskId)
 static void PlayerPC_Mailbox(u8 taskId)
 {
     MenuZeroFillWindowRect(0, 0, 10, 9);
-    gMailboxInfo.count = GetMailboxMailCount();
+    eMailboxInfo.count = GetMailboxMailCount();
 
-    if (gMailboxInfo.count == 0)
+    if (eMailboxInfo.count == 0)
         DisplayItemMessageOnField(taskId, gOtherText_NoMailHere, ReshowPlayerPC, 0);
     else
     {
-        gMailboxInfo.cursorPos = 0;
-        gMailboxInfo.itemsAbove = 0;
+        eMailboxInfo.cursorPos = 0;
+        eMailboxInfo.itemsAbove = 0;
         Mailbox_UpdateMailList();
         ItemStorage_SetItemAndMailCount(taskId);
         Mailbox_DrawMailboxMenu(taskId);
@@ -442,10 +443,10 @@ static void ItemStorage_SetItemAndMailCount(u8 taskId)
     else
         NUM_PAGE_ITEMS = NUM_ITEMS + 1; // there are not enough items to fill a full page; take the # of items and add 1 for the cancel button.
 
-    if (gMailboxInfo.count > 7)
-        gMailboxInfo.pageItems = 8;
+    if (eMailboxInfo.count > 7)
+        eMailboxInfo.pageItems = 8;
     else
-        gMailboxInfo.pageItems = gMailboxInfo.count + 1;
+        eMailboxInfo.pageItems = eMailboxInfo.count + 1;
 }
 
 static void ItemStorage_ProcessInput(u8 taskId)
@@ -1048,8 +1049,8 @@ static void Mailbox_UpdateMailList(void)
 static void Mailbox_DrawMailList(u8 taskId) // taskId is unused
 {
     u16 yCoord = 0;
-    u16 i = gMailboxInfo.itemsAbove;
-    register struct MailboxStruct *tempMailbox asm("r1") = &gMailboxInfo;
+    u16 i = eMailboxInfo.itemsAbove;
+    register struct MailboxStruct *tempMailbox asm("r1") = &eMailboxInfo;
     register struct MailboxStruct *mailbox asm("r6");
 
     if(i < i + tempMailbox->pageItems)
@@ -1076,10 +1077,10 @@ static void Mailbox_DrawMailList(u8 taskId) // taskId is unused
     }
 
 beforeLabel:
-    if(i - gMailboxInfo.itemsAbove != 8)
+    if(i - eMailboxInfo.itemsAbove != 8)
         MenuFillWindowRectWithBlankTile(0x15, yCoord + 4, 0x1C, 0x12);
 
-    switch(gMailboxInfo.itemsAbove)
+    switch(eMailboxInfo.itemsAbove)
     {
     default:
         CreateVerticalScrollIndicators(0, 0xC8, 8);
@@ -1092,7 +1093,7 @@ weirdCase:
         break;
     }
 
-    if(gMailboxInfo.itemsAbove + gMailboxInfo.pageItems <= gMailboxInfo.count)
+    if(eMailboxInfo.itemsAbove + eMailboxInfo.pageItems <= eMailboxInfo.count)
         CreateVerticalScrollIndicators(1, 0xC8, 0x98);
     else
         DestroyVerticalScrollIndicator(1);
@@ -1107,7 +1108,7 @@ static void Mailbox_DrawMailboxMenu(u8 taskId)
     MenuPrint(gPCText_Mailbox, 1, 1);
     MenuDrawTextWindow(0x14, 0, 0x1D, 0x13);
     Mailbox_DrawMailList(taskId);
-    InitMenu(0, 0x15, 2, gMailboxInfo.pageItems, gMailboxInfo.cursorPos, 8);
+    InitMenu(0, 0x15, 2, eMailboxInfo.pageItems, eMailboxInfo.cursorPos, 8);
 }
 
 // Mailbox_ProcessInput
@@ -1117,29 +1118,29 @@ static void Mailbox_ProcessInput(u8 taskId)
     {
         if(gMain.newAndRepeatedKeys & DPAD_UP)
         {
-            if(gMailboxInfo.cursorPos != 0)
+            if(eMailboxInfo.cursorPos != 0)
             {
                 PlaySE(SE_SELECT);
-                gMailboxInfo.cursorPos = MoveMenuCursor(-1);
+                eMailboxInfo.cursorPos = MoveMenuCursor(-1);
             }
-            else if(gMailboxInfo.itemsAbove != 0)
+            else if(eMailboxInfo.itemsAbove != 0)
             {
                 PlaySE(SE_SELECT);
-                gMailboxInfo.itemsAbove--;
+                eMailboxInfo.itemsAbove--;
                 Mailbox_DrawMailList(taskId);
             }
         }
         else if(gMain.newAndRepeatedKeys & DPAD_DOWN)
         {
-            if(gMailboxInfo.cursorPos != gMailboxInfo.pageItems - 1)
+            if(eMailboxInfo.cursorPos != eMailboxInfo.pageItems - 1)
             {
                 PlaySE(SE_SELECT);
-                gMailboxInfo.cursorPos = MoveMenuCursor(1);
+                eMailboxInfo.cursorPos = MoveMenuCursor(1);
             }
-            else if(gMailboxInfo.itemsAbove + gMailboxInfo.cursorPos != gMailboxInfo.count)
+            else if(eMailboxInfo.itemsAbove + eMailboxInfo.cursorPos != eMailboxInfo.count)
             {
                 PlaySE(SE_SELECT);
-                gMailboxInfo.itemsAbove++;
+                eMailboxInfo.itemsAbove++;
                 Mailbox_DrawMailList(taskId);
             }
         }
@@ -1148,7 +1149,7 @@ static void Mailbox_ProcessInput(u8 taskId)
             HandleDestroyMenuCursors();
             PlaySE(SE_SELECT);
 
-            if(gMailboxInfo.itemsAbove + gMailboxInfo.cursorPos == gMailboxInfo.count)
+            if(eMailboxInfo.itemsAbove + eMailboxInfo.cursorPos == eMailboxInfo.count)
             {
                 Mailbox_TurnOff(taskId);
             }
@@ -1177,7 +1178,7 @@ static void Mailbox_CloseScrollIndicators(void)
 static void Mailbox_PrintWhatToDoWithPlayerMailText(u8 taskId)
 {
     MenuZeroFillWindowRect(0, 0, 0x1D, 0x13);
-    StringCopy(gStringVar1, gSaveBlock1.mail[gMailboxInfo.itemsAbove + 6 + gMailboxInfo.cursorPos].playerName);
+    StringCopy(gStringVar1, gSaveBlock1.mail[eMailboxInfo.itemsAbove + 6 + eMailboxInfo.cursorPos].playerName);
     SanitizeNameString(gStringVar1);
     StringExpandPlaceholders(gStringVar4, gOtherText_WhatWillYouDoMail);
     DisplayItemMessageOnField(taskId, gStringVar4, Mailbox_PrintMailOptions, 0);
@@ -1237,7 +1238,7 @@ static void Mailbox_FadeAndReadMail(u8 taskId)
 {
     if(!gPaletteFade.active)
     {
-        HandleReadMail(&gSaveBlock1.mail[gMailboxInfo.itemsAbove + 6 + gMailboxInfo.cursorPos], Mailbox_ReturnToFieldFromReadMail, 1);
+        HandleReadMail(&gSaveBlock1.mail[eMailboxInfo.itemsAbove + 6 + eMailboxInfo.cursorPos], Mailbox_ReturnToFieldFromReadMail, 1);
         DestroyTask(taskId);
     }
 }
@@ -1276,7 +1277,7 @@ static void Mailbox_DrawYesNoBeforeMove(u8 taskId)
 
 static void Mailbox_DoMailMoveToBag(u8 taskId)
 {
-    struct MailStruct *mail = &gSaveBlock1.mail[gMailboxInfo.itemsAbove + 6 + gMailboxInfo.cursorPos];
+    struct MailStruct *mail = &gSaveBlock1.mail[eMailboxInfo.itemsAbove + 6 + eMailboxInfo.cursorPos];
 
     MenuZeroFillWindowRect(0x14, 8, 0x1A, 0xD);
 
@@ -1290,10 +1291,10 @@ static void Mailbox_DoMailMoveToBag(u8 taskId)
         ClearMailStruct(mail);
         Mailbox_UpdateMailList();
 
-        gMailboxInfo.count--;
+        eMailboxInfo.count--;
 
-        if(gMailboxInfo.count < gMailboxInfo.pageItems + gMailboxInfo.itemsAbove && gMailboxInfo.itemsAbove != 0)
-            gMailboxInfo.itemsAbove--;
+        if(eMailboxInfo.count < eMailboxInfo.pageItems + eMailboxInfo.itemsAbove && eMailboxInfo.itemsAbove != 0)
+            eMailboxInfo.itemsAbove--;
 
         ItemStorage_SetItemAndMailCount(taskId);
     }
@@ -1329,13 +1330,13 @@ static void Mailbox_DoGiveMailPokeMenu(u8 taskId) // Mailbox_DoGiveMailPokeMenu
 static void Mailbox_UpdateMailListAfterDeposit(void)
 {
     u8 taskId = CreateTask(Mailbox_HandleReturnToProcessInput, 0);
-    u8 oldCount = gMailboxInfo.count;
+    u8 oldCount = eMailboxInfo.count;
 
-    gMailboxInfo.count = GetMailboxMailCount();
+    eMailboxInfo.count = GetMailboxMailCount();
     Mailbox_UpdateMailList();
 
-    if(oldCount != gMailboxInfo.count && gMailboxInfo.count < gMailboxInfo.pageItems + gMailboxInfo.itemsAbove && gMailboxInfo.itemsAbove != 0) // did the count update?
-        gMailboxInfo.itemsAbove--;
+    if(oldCount != eMailboxInfo.count && eMailboxInfo.count < eMailboxInfo.pageItems + eMailboxInfo.itemsAbove && eMailboxInfo.itemsAbove != 0) // did the count update?
+        eMailboxInfo.itemsAbove--;
 
     ItemStorage_SetItemAndMailCount(taskId);
     Mailbox_DrawMailboxMenu(taskId);
diff --git a/src/field/pokeblock.c b/src/field/pokeblock.c
index 2ee1a23ae..a4497295f 100644
--- a/src/field/pokeblock.c
+++ b/src/field/pokeblock.c
@@ -27,6 +27,7 @@
 #include "safari_zone.h"
 #include "event_data.h"
 #include "pokeblock.h"
+#include "ewram.h"
 
 struct UnkPokeblockStruct
 {
@@ -36,9 +37,6 @@ struct UnkPokeblockStruct
     u8 unk3;
 };
 
-extern u8 ewram[];
-
-
 static EWRAM_DATA u8 gUnknown_02039244 = 0;
 static EWRAM_DATA struct UnkPokeblockStruct gUnknown_02039248 = {0};
 static EWRAM_DATA u8 gUnknown_0203924C = 0;
@@ -301,7 +299,7 @@ static bool8 sub_810B6C0(void)
         case 10:
             if (MultistepInitMenuWindowContinue())
             {
-                ewram[0x1ffff] = 0;
+                ewram1FFFF = 0;
                 gMain.state++;
             }
             break;
@@ -319,7 +317,7 @@ static bool8 sub_810B6C0(void)
             gMain.state++;
             break;
         case 13:
-            ewram[0x1fffe] = sub_810BA50(0x38, 0x40, 0);
+            ewram1FFFE = sub_810BA50(0x38, 0x40, 0);
             gMain.state++;
             break;
         case 14:
@@ -371,27 +369,27 @@ void sub_810B96C(void)
 
 static bool8 sub_810B998(void)
 {
-    switch (ewram[0x1ffff])
+    switch (ewram1FFFF)
     {
         case 0:
             LZDecompressVram(gMenuPokeblock_Gfx, BG_CHAR_ADDR(2));
-            ewram[0x1ffff]++;
+            ewram1FFFF++;
             break;
         case 1:
             LZDecompressWram(gMenuPokeblock_Tilemap, gBGTilemapBuffers[2]);
-            ewram[0x1ffff]++;
+            ewram1FFFF++;
             break;
         case 2:
             LoadCompressedPalette(gMenuPokeblock_Pal, 0, 0xc0);
-            ewram[0x1ffff]++;
+            ewram1FFFF++;
             break;
         case 3:
             LoadCompressedObjectPic(&gUnknown_083F7F74);
-            ewram[0x1ffff]++;
+            ewram1FFFF++;
             break;
         case 4:
             LoadCompressedObjectPalette(&gUnknown_083F7F7C);
-            ewram[0x1ffff] = 0;
+            ewram1FFFF = 0;
             return TRUE;
     }
     return FALSE;
@@ -613,7 +611,7 @@ static void sub_810BDAC(bool8 flag)
 static void sub_810BF38(bool8 flag)
 {
     PlaySE(SE_SELECT);
-    gSprites[ewram[0x1fffe]].callback = sub_810C8D4;
+    gSprites[ewram1FFFE].callback = sub_810C8D4;
     sub_810BDAC(flag);
 }
 
diff --git a/src/field/region_map.c b/src/field/region_map.c
index bfd2729c2..d643c373d 100644
--- a/src/field/region_map.c
+++ b/src/field/region_map.c
@@ -17,6 +17,7 @@
 #include "string_util.h"
 #include "text.h"
 #include "trig.h"
+#include "ewram.h"
 
 // Map Section IDs
 #define MAPSEC_LITTLEROOT_TOWN 0
@@ -1350,12 +1351,6 @@ struct UnknownStruct3
     struct RegionMap regionMap;
 };
 
-extern u8 ewram[];
-#define ewram0 (*(struct UnknownStruct3 *)(ewram + 0))
-#define ewram888 (ewram + 0x888)
-#define ewramA6E (ewram[0xA6E])
-#define ewramBlankMapName (ewram + 0xA48)
-
 static const u16 sFlyRegionMapFrame_Pal[] = INCBIN_U16("graphics/pokenav/map_frame.gbapal");
 static const u8 sFlyRegionMapFrame_ImageLZ[] = INCBIN_U8("graphics/pokenav/map_frame.4bpp.lz");
 static const u8 sFlyRegionMapFrame_TilemapLZ[] = INCBIN_U8("graphics/pokenav/map_frame.bin.lz");
@@ -1431,7 +1426,7 @@ static const struct UnknownStruct4 sUnknown_083E79C0[1] =
 };
 
 // XXX: what is this?
-static u8 *const ewram_ = ewram;
+static u8 *const ewram_ = gSharedMem;
 
 static const struct SpritePalette sFlyTargetIconSpritePalette = {sFlyTargetIcons_Pal, 2};
 
@@ -1552,10 +1547,10 @@ void CB2_InitFlyRegionMap(void)
         MenuZeroFillScreen();
         break;
     case 3:
-        InitRegionMap(&ewram0.regionMap, 0);
+        InitRegionMap(&ewram0_3.regionMap, 0);
         CreateRegionMapCursor(0, 0);
         CreateRegionMapPlayerIcon(1, 1);
-        ewram0.unk6 = ewram0.regionMap.mapSecId;
+        ewram0_3.unk6 = ewram0_3.regionMap.mapSecId;
         StringFill(ewramBlankMapName, CHAR_SPACE, 12);
         PrintFlyTargetName();
         break;
@@ -1598,20 +1593,20 @@ static void VBlankCB_FlyRegionMap(void)
 
 static void CB2_FlyRegionMap(void)
 {
-    ewram0.unk0();
+    ewram0_3.unk0();
     AnimateSprites();
     BuildOamBuffer();
 }
 
 static void sub_80FC244(void (*func)(void))
 {
-    ewram0.unk0 = func;
-    ewram0.unk4 = 0;
+    ewram0_3.unk0 = func;
+    ewram0_3.unk4 = 0;
 }
 
 static void PrintFlyTargetName(void)
 {
-    if (ewram0.regionMap.unk16 == 2 || ewram0.regionMap.unk16 == 4)
+    if (ewram0_3.regionMap.unk16 == 2 || ewram0_3.regionMap.unk16 == 4)
     {
         u16 i = 0;
         int zero;
@@ -1620,13 +1615,13 @@ static void PrintFlyTargetName(void)
         {
             const struct UnknownStruct4 *r4 = &sUnknown_083E79C0[i];
 
-            if (ewram0.regionMap.mapSecId == r4->mapSecId)
+            if (ewram0_3.regionMap.mapSecId == r4->mapSecId)
             {
                 if (FlagGet(r4->flag))
                 {
                     MenuDrawTextWindow(16, 14, 29, 19);
-                    MenuPrint(ewram0.regionMap.mapSecName, 17, 15);
-                    MenuPrint_RightAligned(r4->unk0[ewram0.regionMap.everGrandeCityArea], 29, 17);
+                    MenuPrint(ewram0_3.regionMap.mapSecName, 17, 15);
+                    MenuPrint_RightAligned(r4->unk0[ewram0_3.regionMap.everGrandeCityArea], 29, 17);
                     return;
                 }
                 break;
@@ -1637,7 +1632,7 @@ static void PrintFlyTargetName(void)
         if (zero == 0)
         {
             MenuDrawTextWindow(16, 16, 29, 19);
-            MenuPrint(ewram0.regionMap.mapSecName, 17, 17);
+            MenuPrint(ewram0_3.regionMap.mapSecName, 17, 17);
             MenuZeroFillWindowRect(16, 14, 29, 15);
         }
     }
@@ -1738,7 +1733,7 @@ static void CreateSpecialAreaFlyTargetIcons(void)
 static void SpriteCB_FlyTargetIcons(struct Sprite *sprite)
 {
     // Blink if our mapSecId is the one selected on the map
-    if (ewram0.regionMap.mapSecId == sprite->data0)
+    if (ewram0_3.regionMap.mapSecId == sprite->data0)
     {
         // Toggle visibility every 16 frames
         sprite->data1++;
@@ -1757,11 +1752,11 @@ static void SpriteCB_FlyTargetIcons(struct Sprite *sprite)
 
 static void sub_80FC5B4(void)
 {
-    switch (ewram0.unk4)
+    switch (ewram0_3.unk4)
     {
     case 0:
         BeginNormalPaletteFade(0xFFFFFFFF, 0, 16, 0, 0);
-        ewram0.unk4++;
+        ewram0_3.unk4++;
         break;
     case 1:
         if (UpdatePaletteFade() != 0)
@@ -1773,7 +1768,7 @@ static void sub_80FC5B4(void)
 
 static void sub_80FC600(void)
 {
-    if (ewram0.unk4 == 0)
+    if (ewram0_3.unk4 == 0)
     {
         switch (sub_80FAB60())
         {
@@ -1785,7 +1780,7 @@ static void sub_80FC600(void)
             PrintFlyTargetName();
             break;
         case INPUT_EVENT_A_BUTTON:
-            if (ewram0.regionMap.unk16 == 2 || ewram0.regionMap.unk16 == 4)
+            if (ewram0_3.regionMap.unk16 == 2 || ewram0_3.regionMap.unk16 == 4)
             {
                 m4aSongNumStart(SE_SELECT);
                 ewramA6E = 1;
@@ -1803,11 +1798,11 @@ static void sub_80FC600(void)
 
 static void sub_80FC69C(void)
 {
-    switch (ewram0.unk4)
+    switch (ewram0_3.unk4)
     {
     case 0:
         BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 16, 0);
-        ewram0.unk4++;
+        ewram0_3.unk4++;
         break;
     case 1:
         if (UpdatePaletteFade() != 0)
@@ -1815,7 +1810,7 @@ static void sub_80FC69C(void)
         FreeRegionMapIconResources();
         if (ewramA6E != 0)
         {
-            switch (ewram0.regionMap.mapSecId)
+            switch (ewram0_3.regionMap.mapSecId)
             {
             case MAPSEC_SOUTHERN_ISLAND:
                 sub_8053538(22);
@@ -1827,13 +1822,13 @@ static void sub_80FC69C(void)
                 sub_8053538((gSaveBlock2.playerGender == MALE) ? 12 : 13);
                 break;
             case MAPSEC_EVER_GRANDE_CITY:
-                sub_8053538((FlagGet(0x854) && ewram0.regionMap.everGrandeCityArea == 0) ? 20 : 11);
+                sub_8053538((FlagGet(0x854) && ewram0_3.regionMap.everGrandeCityArea == 0) ? 20 : 11);
                 break;
             default:
-                if (sUnknown_083E7920[ewram0.regionMap.mapSecId][2] != 0)
-                    sub_8053538(sUnknown_083E7920[ewram0.regionMap.mapSecId][2]);
+                if (sUnknown_083E7920[ewram0_3.regionMap.mapSecId][2] != 0)
+                    sub_8053538(sUnknown_083E7920[ewram0_3.regionMap.mapSecId][2]);
                 else
-                    warp1_set_2(sUnknown_083E7920[ewram0.regionMap.mapSecId][0], sUnknown_083E7920[ewram0.regionMap.mapSecId][1], -1);
+                    warp1_set_2(sUnknown_083E7920[ewram0_3.regionMap.mapSecId][0], sUnknown_083E7920[ewram0_3.regionMap.mapSecId][1], -1);
                 break;
             }
             sub_80865BC();
diff --git a/src/field/shop.c b/src/field/shop.c
index 375205935..67e9b006e 100644
--- a/src/field/shop.c
+++ b/src/field/shop.c
@@ -26,13 +26,10 @@
 #include "overworld.h"
 #include "decoration_inventory.h"
 #include "field_camera.h"
-
-#define ewram18000 ((u16 *)(ewram + 0x18000))
-#define ewram18300 ((u16 *)(ewram + 0x18300))
+#include "ewram.h"
 
 extern bool8 sub_80A52C4(u8, u8);
 
-extern u8 ewram[];
 extern u8 gBuyMenuFrame_Gfx[];
 extern u16 gBuyMenuFrame_Tilemap[];
 extern u16 gMenuMoneyPal[16];
@@ -54,7 +51,7 @@ static struct MartInfo gMartInfo;
 
 // ewram
 EWRAM_DATA u32 gMartTotalCost = 0;
-EWRAM_DATA s16 gUnknown_020386A4[16][4] = {0}; // game freak barely uses 2d arrays wtf?
+EWRAM_DATA s16 gUnknown_020386A4[16][4] = {0};
 EWRAM_DATA struct ItemSlot gUnknown_02038724[3] = {0}; // tv.c uses this, so it cant be static
 EWRAM_DATA u8 gUnknown_02038730 = 0;
 EWRAM_DATA u8 gUnknown_02038731 = 0;
diff --git a/src/field/slot_machine.c b/src/field/slot_machine.c
index 153970337..d6b20feaa 100644
--- a/src/field/slot_machine.c
+++ b/src/field/slot_machine.c
@@ -15,7 +15,7 @@ struct UnkStruct1 {
     /*0x02*/ s16 unk02;
 };
 
-extern struct UnkStruct2000000 unk_2000000;
+extern struct UnkStruct2000000 gSharedMem;
 
 extern struct UnkStruct1 *gUnknown_083ED048[];
 extern const u16 gPalette_83EDE24[];
@@ -40,7 +40,7 @@ void sub_8104CAC(u8 arg0) {
 
     sub_8104DA4();
 
-    task = &gTasks[unk_2000000.unk3D];
+    task = &gTasks[gSharedMem.unk3D];
     task->data[1] = arg0;
 
     i = 0;
diff --git a/src/field/tv.c b/src/field/tv.c
index 87fc03065..a0287e7df 100644
--- a/src/field/tv.c
+++ b/src/field/tv.c
@@ -38,6 +38,7 @@
 #include "string_util.h"
 #include "strings.h"
 #include "text.h"
+#include "ewram.h"
 
 struct UnkTvStruct
 {
@@ -95,9 +96,6 @@ extern u8 gBattleOutcome;
 
 extern u16 gLastUsedItem;
 
-extern u8 ewram[];
-#define gUnknown_02007000 (*(ewramStruct_02007000 *)(ewram + 0x7000))
-
 static EWRAM_DATA u16 gUnknown_020387E0 = 0;
 static EWRAM_DATA u16 gUnknown_020387E2 = 0;
 static EWRAM_DATA u8 gUnknown_020387E4 = 0;
diff --git a/src/pokemon/learn_move.c b/src/pokemon/learn_move.c
index 33252c66b..a47896ea5 100644
--- a/src/pokemon/learn_move.c
+++ b/src/pokemon/learn_move.c
@@ -16,8 +16,8 @@
 #include "strings2.h"
 #include "task.h"
 #include "trig.h"
+#include "ewram.h"
 
-extern u8 ewram[];
 extern u16 gSpecialVar_0x8004;
 extern u16 gSpecialVar_0x8005;
 extern u8 gTileBuffer[];
@@ -277,7 +277,7 @@ void CB2_InitLearnMove(void)
     ResetSpriteData();
     FreeAllSpritePalettes();
     ResetTasks();
-    sLearnMoveStruct = (struct LearnMoveStruct *)(ewram + 0x17000);
+    sLearnMoveStruct = eLearnMoveStruct;
     ClearLearnMoveVars();
     sLearnMoveStruct->partyMon = gSpecialVar_0x8004;
     sub_8133558();
@@ -312,7 +312,7 @@ void sub_81327A4(void)
     ResetSpriteData();
     FreeAllSpritePalettes();
     ResetTasks();
-    sLearnMoveStruct = (struct LearnMoveStruct *)(ewram + 0x17000);
+    sLearnMoveStruct = eLearnMoveStruct;
     sub_8133558();
     sLearnMoveStruct->unk2C6 = gSpecialVar_0x8005;
     SetVBlankCallback(VBlankCB_LearnMove);
diff --git a/src/pokemon/mail.c b/src/pokemon/mail.c
index c5dd119e3..13129bf7f 100644
--- a/src/pokemon/mail.c
+++ b/src/pokemon/mail.c
@@ -15,6 +15,7 @@
 #include "task.h"
 #include "text.h"
 #include "unknown_task.h"
+#include "ewram.h"
 
 struct UnkMailStruct
 {
@@ -66,9 +67,6 @@ struct MailGraphics
     u16 color12;
 };
 
-extern u8 ewram[];
-#define ewram0 (*(struct Unk2000000 *)(ewram))
-
 extern struct MailGraphics gMailGraphicsTable[];
 extern u16 gUnknown_083E562C[][2];
 
@@ -90,61 +88,61 @@ void HandleReadMail(struct MailStruct *arg0, MainCallback arg1, bool8 arg2)
     u16 mailDesign;
     u16 buffer[2];
 
-    ewram0.varFF = GAME_LANGUAGE;
-    ewram0.var100 = 1;
-    ewram0.var104 = (MainCallback)EasyChat_GetWordText;
-    ewram0.var108 = (MainCallback)ConvertEasyChatWordsToString;
+    ewram0_4.varFF = GAME_LANGUAGE;
+    ewram0_4.var100 = 1;
+    ewram0_4.var104 = (MainCallback)EasyChat_GetWordText;
+    ewram0_4.var108 = (MainCallback)ConvertEasyChatWordsToString;
 
     mailDesign = arg0->itemId - ITEM_ORANGE_MAIL;
 
     if (mailDesign <= 11)
     {
-        ewram0.varFA = arg0->itemId - ITEM_ORANGE_MAIL;
+        ewram0_4.varFA = arg0->itemId - ITEM_ORANGE_MAIL;
     }
     else
     {
-        ewram0.varFA = 0;
+        ewram0_4.varFA = 0;
         arg2 = FALSE;
     }
 
-    switch (ewram0.var100)
+    switch (ewram0_4.var100)
     {
     case 0:
     default:
-        ewram0.var10C = &gUnknown_083E5730[ewram0.varFA];
+        ewram0_4.var10C = &gUnknown_083E5730[ewram0_4.varFA];
         break;
 
     case 1:
-        ewram0.var10C = &gUnknown_083E57A4[ewram0.varFA];
+        ewram0_4.var10C = &gUnknown_083E57A4[ewram0_4.varFA];
         break;
     }
 
     if (((MailSpeciesToSpecies(arg0->species, buffer) << 16) + 0xFFFF0000) <= (410 << 16))
     {
-        switch (ewram0.varFA)
+        switch (ewram0_4.varFA)
         {
         case 6:
-            ewram0.varFB = 1;
+            ewram0_4.varFB = 1;
             break;
 
         case 9:
-            ewram0.varFB = 2;
+            ewram0_4.varFB = 2;
             break;
 
         default:
-            ewram0.varFB = 0;
+            ewram0_4.varFB = 0;
             break;
         }
     }
     else
     {
-        ewram0.varFB = 0;
+        ewram0_4.varFB = 0;
     }
 
 
-    ewram0.varF4 = arg0;
-    ewram0.varEC = arg1;
-    ewram0.varF8 = arg2;
+    ewram0_4.varF4 = arg0;
+    ewram0_4.varEC = arg1;
+    ewram0_4.varF8 = arg2;
 
     SetMainCallback2(sub_80F8D50);
 }
@@ -214,31 +212,31 @@ static u8 sub_80F8A28(void)
         RETURN_UP_STATE;
 
     case 11:
-        LoadPalette(gMailGraphicsTable[ewram0.varFA].palette, 0, 16 * 2);
+        LoadPalette(gMailGraphicsTable[ewram0_4.varFA].palette, 0, 16 * 2);
         RETURN_UP_STATE;
 
     case 12:
-        LZ77UnCompVram(gMailGraphicsTable[ewram0.varFA].tileMap, (void *)(VRAM + 0x4000));
+        LZ77UnCompVram(gMailGraphicsTable[ewram0_4.varFA].tileMap, (void *)(VRAM + 0x4000));
         RETURN_UP_STATE;
 
     case 13:
-        LZ77UnCompVram(gMailGraphicsTable[ewram0.varFA].tiles, (void *)(VRAM));
+        LZ77UnCompVram(gMailGraphicsTable[ewram0_4.varFA].tiles, (void *)(VRAM));
 
-        gPlttBufferUnfaded[241] = gMailGraphicsTable[ewram0.varFA].color10;
-        gPlttBufferUnfaded[248] = gMailGraphicsTable[ewram0.varFA].color12;
+        gPlttBufferUnfaded[241] = gMailGraphicsTable[ewram0_4.varFA].color10;
+        gPlttBufferUnfaded[248] = gMailGraphicsTable[ewram0_4.varFA].color12;
         gPlttBufferUnfaded[10] = gUnknown_083E562C[gSaveBlock2.playerGender][0];
         gPlttBufferUnfaded[11] = gUnknown_083E562C[gSaveBlock2.playerGender][1];
         RETURN_UP_STATE;
 
     case 14:
-        if (ewram0.varF8 != 0)
+        if (ewram0_4.varF8 != 0)
         {
             sub_80F8DA0();
         }
         RETURN_UP_STATE;
 
     case 15:
-        if (ewram0.varF8 != 0)
+        if (ewram0_4.varF8 != 0)
         {
             sub_80F8E80();
         }
@@ -251,18 +249,18 @@ static u8 sub_80F8A28(void)
     {
         u16 local1;
 
-        local1 = sub_809D4A8(ewram0.varF4->species);
+        local1 = sub_809D4A8(ewram0_4.varF4->species);
 
-        switch (ewram0.varFB)
+        switch (ewram0_4.varFB)
         {
         case 1:
             sub_809D580(local1);
-            ewram0.varFC = sub_809D3A4(local1, SpriteCallbackDummy, 96, 128, 0);
+            ewram0_4.varFC = sub_809D3A4(local1, SpriteCallbackDummy, 96, 128, 0);
             break;
 
         case 2:
             sub_809D580(local1);
-            ewram0.varFC = sub_809D3A4(local1, SpriteCallbackDummy, 40, 128, 0);
+            ewram0_4.varFC = sub_809D3A4(local1, SpriteCallbackDummy, 40, 128, 0);
             break;
         }
         RETURN_UP_STATE;
@@ -283,7 +281,7 @@ static u8 sub_80F8A28(void)
         REG_DISPCNT = DISPCNT_MODE_0 | DISPCNT_OBJ_1D_MAP | DISPCNT_BG0_ON | DISPCNT_BG1_ON | DISPCNT_BG2_ON | DISPCNT_OBJ_ON;
         BeginNormalPaletteFade(-1, 0, 16, 0, 0);
         gPaletteFade.bufferTransferDisabled = 0;
-        ewram0.varF0 = sub_80F8F58;
+        ewram0_4.varF0 = sub_80F8F58;
         return TRUE;
 
     default:
@@ -325,24 +323,24 @@ static void sub_80F8DA0(void)
     u8 *ptr;
 
     r6 = 0;
-    for (i = 0; i < ewram0.var10C->var0; i++)
+    for (i = 0; i < ewram0_4.var10C->var0; i++)
     {
-        ConvertEasyChatWordsToString(ewram0.words[i], &ewram0.varF4->words[r6], ewram0.var10C->var4[i].unk_0_2, 1);
-        r6 += ewram0.var10C->var4[i].unk_0_2;
+        ConvertEasyChatWordsToString(ewram0_4.words[i], &ewram0_4.varF4->words[r6], ewram0_4.var10C->var4[i].unk_0_2, 1);
+        r6 += ewram0_4.var10C->var4[i].unk_0_2;
     }
-    ptr = ewram0.varD8;
-    if (ewram0.var100 == 0)
+    ptr = ewram0_4.varD8;
+    if (ewram0_4.var100 == 0)
     {
-        ptr = sub_80F8D7C(ptr, ewram0.varF4->playerName);
+        ptr = sub_80F8D7C(ptr, ewram0_4.varF4->playerName);
         StringCopy(ptr, gOtherText_From);
-        ewram0.varF9 = ewram0.var10C->var2 - StringLength(ewram0.varD8);
+        ewram0_4.varF9 = ewram0_4.var10C->var2 - StringLength(ewram0_4.varD8);
 
     }
     else
     {
         ptr = StringCopy(ptr, gOtherText_From);
-        sub_80F8D7C(ptr, ewram0.varF4->playerName);
-        ewram0.varF9 = ewram0.var10C->var2;
+        sub_80F8D7C(ptr, ewram0_4.varF4->playerName);
+        ewram0_4.varF9 = ewram0_4.var10C->var2;
     }
 }
 
@@ -352,25 +350,25 @@ static void sub_80F8E80(void)
     u8 x;
     u8 y = 0;
 
-    for (pos = 0; pos < ewram0.var10C->var0; pos++)
+    for (pos = 0; pos < ewram0_4.var10C->var0; pos++)
     {
-        if (ewram0.words[pos][0] == 0xFF)
+        if (ewram0_4.words[pos][0] == 0xFF)
         {
             continue;
         }
 
-        if (ewram0.words[pos][0] == 0x00)
+        if (ewram0_4.words[pos][0] == 0x00)
         {
             continue;
         }
 
-        x = ewram0.var10C->var4[pos].unk_0_4;
-        y += ewram0.var10C->var4[pos].unk_0_0;
-        MenuPrint(ewram0.words[pos], ewram0.var10C->var3_4 + x, ewram0.var10C->var3_0 + y);
+        x = ewram0_4.var10C->var4[pos].unk_0_4;
+        y += ewram0_4.var10C->var4[pos].unk_0_0;
+        MenuPrint(ewram0_4.words[pos], ewram0_4.var10C->var3_4 + x, ewram0_4.var10C->var3_0 + y);
         y += 2;
     }
 
-    MenuPrint(ewram0.varD8, ewram0.varF9, ewram0.var10C->var1);
+    MenuPrint(ewram0_4.varD8, ewram0_4.varF9, ewram0_4.var10C->var1);
 }
 
 static void sub_80F8F18(void)
@@ -382,13 +380,13 @@ static void sub_80F8F18(void)
 
 static void sub_80F8F2C(void)
 {
-    if (ewram0.varFB != 0)
+    if (ewram0_4.varFB != 0)
     {
         AnimateSprites();
         BuildOamBuffer();
     }
 
-    ewram0.varF0();
+    ewram0_4.varF0();
 }
 
 static void sub_80F8F58(void)
@@ -398,7 +396,7 @@ static void sub_80F8F58(void)
     local0 = UpdatePaletteFade();
     if (local0 == 0)
     {
-        ewram0.varF0 = sub_80F8F78;
+        ewram0_4.varF0 = sub_80F8F78;
     }
 }
 
@@ -407,7 +405,7 @@ static void sub_80F8F78(void)
     if (gMain.newKeys & (A_BUTTON | B_BUTTON))
     {
         BeginNormalPaletteFade(-1, 0, 0, 16, 0);
-        ewram0.varF0 = sub_80F8FB4;
+        ewram0_4.varF0 = sub_80F8FB4;
     }
 }
 
@@ -420,18 +418,18 @@ static void sub_80F8FB4(void)
         return;
     }
 
-    SetMainCallback2(ewram0.varEC);
-    switch (ewram0.varFB)
+    SetMainCallback2(ewram0_4.varEC);
+    switch (ewram0_4.varFB)
     {
     case 2:
     case 1:
-        local1 = sub_809D4A8(ewram0.varF4->species);
+        local1 = sub_809D4A8(ewram0_4.varF4->species);
         sub_809D608(local1);
 
-        sub_809D510(&gSprites[ewram0.varFC]);
+        sub_809D510(&gSprites[ewram0_4.varFC]);
         break;
     }
 
-    memset(&ewram0, 0, 0x110);
+    memset(&ewram0_4, 0, 0x110);
     ResetPaletteFade();
 }
diff --git a/src/pokemon/pokeblock_feed.c b/src/pokemon/pokeblock_feed.c
index 5d6b215cd..5f218a6f6 100644
--- a/src/pokemon/pokeblock_feed.c
+++ b/src/pokemon/pokeblock_feed.c
@@ -19,8 +19,8 @@
 #include "field_effect.h"
 #include "sound.h"
 #include "trig.h"
+#include "ewram.h"
 
-extern u8 ewram[];
 extern struct MusicPlayerInfo gMPlay_BGM;
 extern u8 gPokeblockMonID;
 extern s16 gPokeblockGain;
@@ -540,7 +540,7 @@ static bool8 TransitionToPokeblockFeedScene(void)
     case 6:
         if (MultistepInitMenuWindowContinue())
         {
-            ewram[0x1FFFF] = 0;
+            ewram1FFFF = 0;
             gMain.state++;
         }
         break;
@@ -551,11 +551,11 @@ static bool8 TransitionToPokeblockFeedScene(void)
         }
         break;
     case 8:
-        ewram[0x1FFFD] = sub_81480B4();
+        ewram1FFFD = sub_81480B4();
         gMain.state++;
         break;
     case 9:
-        ewram[0x1FFFE] = PokeblockFeed_CreatePokeSprite(&gPlayerParty[gPokeblockMonID]);
+        ewram1FFFE = PokeblockFeed_CreatePokeSprite(&gPlayerParty[gPokeblockMonID]);
         gMain.state++;
         break;
     case 10:
@@ -611,13 +611,13 @@ static bool8 sub_8147B20(struct Pokemon* mon)
 {
     u16 species;
     u32 PiD, TiD;
-    switch (ewram[0x1FFFF])
+    switch (ewram1FFFF)
     {
     case 0:
         species = GetMonData(mon, MON_DATA_SPECIES2);
         PiD = GetMonData(mon, MON_DATA_PERSONALITY);
         HandleLoadSpecialPokePic(&gMonFrontPicTable[species], gMonFrontPicCoords[species].coords, gMonFrontPicCoords[species].y_offset, 0x2000000, gUnknown_081FAF4C[1], species, PiD);
-        ewram[0x1FFFF]++;
+        ewram1FFFF++;
         break;
     case 1:
         {
@@ -629,37 +629,37 @@ static bool8 sub_8147B20(struct Pokemon* mon)
             palette = GetMonSpritePalStructFromOtIdPersonality(species, TiD, PiD);
             LoadCompressedObjectPalette(palette);
             GetMonSpriteTemplate_803C56C(palette->tag, 1);
-            ewram[0x1FFFF]++;
+            ewram1FFFF++;
         }
         break;
     case 2:
         LoadCompressedObjectPic(&gUnknown_083F7F74);
-        ewram[0x1FFFF]++;
+        ewram1FFFF++;
         break;
     case 3:
         LoadCompressedObjectPalette(&gUnknown_083F7F7C);
-        ewram[0x1FFFF]++;
+        ewram1FFFF++;
         break;
     case 4:
         LoadCompressedObjectPic(&sUnknown_084121DC);
-        ewram[0x1FFFF]++;
+        ewram1FFFF++;
         break;
     case 5:
         SetPokeblockFeedSpritePal(gScriptItemId);
         LoadCompressedObjectPalette(&sPokeblockFeedSpritePal);
-        ewram[0x1FFFF]++;
+        ewram1FFFF++;
         break;
     case 6:
         LZDecompressVram(gBattleTerrainTiles_Building, (void*)(VRAM));
-        ewram[0x1FFFF]++;
+        ewram1FFFF++;
         break;
     case 7:
         LZDecompressVram(gUnknown_08E782FC, (void*)(VRAM + 0xE800));
-        ewram[0x1FFFF]++;
+        ewram1FFFF++;
         break;
     case 8:
         LoadCompressedPalette(gBattleTerrainPalette_BattleTower, 0x20, 0x60);
-        ewram[0x1FFFF] = 0;
+        ewram1FFFF = 0;
         return TRUE;
     }
     return FALSE;
@@ -684,13 +684,13 @@ static void sub_8147CC8(u8 taskID)
             sub_81481DC();
             break;
         case 255:
-            sub_8148108(ewram[0x1FFFD], gTasks[taskID].data[1]);
+            sub_8148108(ewram1FFFD, gTasks[taskID].data[1]);
             break;
         case 269:
-            ewram[0x1FFFC] = CreatePokeblockSprite();
+            ewram1FFFC = CreatePokeblockSprite();
             break;
         case 281:
-            sub_8148044(ewram[0x1FFFE]);
+            sub_8148044(ewram1FFFE);
             break;
         case 297:
             gTasks[taskID].func = Task_PrintAtePokeblockText;
@@ -928,14 +928,11 @@ static bool8 sub_8148540(void)
     }
 }
 
-#define ewram1D000 ((u16 *)(ewram + 0x1D000))
-#define ewram1D400 ((u16 *)(ewram + 0x1D400))
-
 static bool8 sub_81485CC(void)
 {
     u16 var = gUnknown_03005FA0[12] - gUnknown_03005FA0[4];
 
-    gPokeblockFeedPokeSprite->pos2.x = ewram1D000[var];
+    gPokeblockFeedPokeSprite->pos2.x = ewram1D000_2[var];
     gPokeblockFeedPokeSprite->pos2.y = ewram1D400[var];
 
     if (--gUnknown_03005FA0[4] == 0)
@@ -960,7 +957,7 @@ static void sub_814862C(void)
 
     for (i = 0; i < r7 - 1; i++)
     {
-        s16* r3 = &ewram1D000[r8 + i];
+        s16* r3 = &ewram1D000_2[r8 + i];
         s16 r1 = *r3 - (var3);
 
         s16* r5 = &ewram1D400[r8 + i];
@@ -970,7 +967,7 @@ static void sub_814862C(void)
         *r5 -= r4 * (i + 1) / r7;
     }
 
-    ewram1D000[(r8 + r7) - 1] = var3;
+    ewram1D000_2[(r8 + r7) - 1] = var3;
     ewram1D400[(r8 + r7) - 1] = r9;
 }
 
@@ -999,12 +996,12 @@ void sub_8148710(void)
 
         if (!var_24)
         {
-            ewram1D000[r4] = Sin(gUnknown_03005FA0[0], gUnknown_03005FA0[2] + r5 / 256) + r8;
+            ewram1D000_2[r4] = Sin(gUnknown_03005FA0[0], gUnknown_03005FA0[2] + r5 / 256) + r8;
             ewram1D400[r4] = Cos(gUnknown_03005FA0[0], gUnknown_03005FA0[3] + r5 / 256) + r7;
         }
         else
         {
-            ewram1D000[r4] = Sin(gUnknown_03005FA0[0], gUnknown_03005FA0[2] - r5 / 256) + r8;
+            ewram1D000_2[r4] = Sin(gUnknown_03005FA0[0], gUnknown_03005FA0[2] - r5 / 256) + r8;
             ewram1D400[r4] = Cos(gUnknown_03005FA0[0], gUnknown_03005FA0[3] - r5 / 256) + r7;
         }
 
diff --git a/src/pokemon/pokedex_cry_screen.c b/src/pokemon/pokedex_cry_screen.c
index ad7029f59..912b9aabd 100644
--- a/src/pokemon/pokedex_cry_screen.c
+++ b/src/pokemon/pokedex_cry_screen.c
@@ -2,6 +2,7 @@
 #include "pokedex_cry_screen.h"
 #include "palette.h"
 #include "sprite.h"
+#include "ewram.h"
 
 struct Unk201C800 {
     u8 unk_0;
@@ -11,10 +12,6 @@ struct Unk201C800 {
     u16 unk_4;
 };
 
-#define EWRAM_1C800 (*(struct Unk201C800 *)(unk_201C000 + 0x800))
-
-extern u8 unk_201C000[];
-
 extern u8 gUnknown_03005E98;
 
 // data/pokedex_cry_screen.o
diff --git a/src/pokemon/pokemon_1.c b/src/pokemon/pokemon_1.c
index 0c0d14d7a..750a9892a 100644
--- a/src/pokemon/pokemon_1.c
+++ b/src/pokemon/pokemon_1.c
@@ -9,6 +9,7 @@
 #include "sprite.h"
 #include "string_util.h"
 #include "text.h"
+#include "ewram.h"
 
 //Extracts the upper 16 bits of a 32-bit number
 #define HIHALF(n) (((n) & 0xFFFF0000) >> 16)
@@ -16,7 +17,6 @@
 //Extracts the lower 16 bits of a 32-bit number
 #define LOHALF(n) ((n) & 0xFFFF)
 
-extern u8 unk_2000000[];
 extern u16 gMoveToLearn;
 
 static EWRAM_DATA u8 sLearningMoveTableID = 0;
@@ -436,9 +436,9 @@ void CalculateMonStats(struct Pokemon *mon)
         newMaxHP = (((n + hpEV / 4) * level) / 100) + level + 10;
     }
 
-    unk_2000000[0x160FA] = newMaxHP - oldMaxHP;
-    if (unk_2000000[0x160FA] == 0)
-        unk_2000000[0x160FA] = 1;
+    eStatHp = newMaxHP - oldMaxHP;
+    if (eStatHp == 0)
+        eStatHp = 1;
 
     SetMonData(mon, MON_DATA_MAX_HP, &newMaxHP);
 
diff --git a/src/pokemon/pokemon_2.c b/src/pokemon/pokemon_2.c
index d3bdf3a13..68923a16e 100644
--- a/src/pokemon/pokemon_2.c
+++ b/src/pokemon/pokemon_2.c
@@ -12,13 +12,11 @@
 #include "strings2.h"
 #include "text.h"
 #include "util.h"
+#include "ewram.h"
 
 extern u8 gPlayerPartyCount;
 extern u8 gEnemyPartyCount;
 
-extern u16 unk_20160BC[];
-extern struct SecretBaseRecord gSecretBaseRecord;
-extern u32 dword_2017100[];
 extern u16 gBattleTypeFlags;
 extern u8 gActiveBank;
 extern struct BattlePokemon gBattleMons[4];
@@ -1062,31 +1060,31 @@ void CreateSecretBaseEnemyParty(struct SecretBaseRecord *secretBaseRecord)
     s32 i, j;
 
     ZeroEnemyPartyMons();
-    memcpy(&gSecretBaseRecord, secretBaseRecord, sizeof(*secretBaseRecord));
+    memcpy(eSecretBaseRecord, secretBaseRecord, sizeof(*secretBaseRecord));
 
     for (i = 0; i < 6; i++)
     {
-        if (gSecretBaseRecord.partySpecies[i])
+        if (eSecretBaseRecord->partySpecies[i])
         {
             CreateMon(&gEnemyParty[i],
-                gSecretBaseRecord.partySpecies[i],
-                gSecretBaseRecord.partyLevels[i],
+                eSecretBaseRecord->partySpecies[i],
+                eSecretBaseRecord->partyLevels[i],
                 15,
                 1,
-                gSecretBaseRecord.partyPersonality[i],
+                eSecretBaseRecord->partyPersonality[i],
                 2,
                 0);
 
             // these two SetMonData calls require the (u8 *) cast since SetMonData is declared in this function.
-            SetMonData(&gEnemyParty[i], MON_DATA_HELD_ITEM, (u8 *)&gSecretBaseRecord.partyHeldItems[i]);
+            SetMonData(&gEnemyParty[i], MON_DATA_HELD_ITEM, (u8 *)&eSecretBaseRecord->partyHeldItems[i]);
 
             for (j = 0; j < 6; j++)
-                SetMonData(&gEnemyParty[i], MON_DATA_HP_EV + j, &gSecretBaseRecord.partyEVs[i]);
+                SetMonData(&gEnemyParty[i], MON_DATA_HP_EV + j, &eSecretBaseRecord->partyEVs[i]);
 
             for (j = 0; j < 4; j++)
             {
-                SetMonData(&gEnemyParty[i], MON_DATA_MOVE1 + j, (u8 *)&gSecretBaseRecord.partyMoves[i * 4 + j]);
-                SetMonData(&gEnemyParty[i], MON_DATA_PP1 + j, &gBattleMoves[gSecretBaseRecord.partyMoves[i * 4 + j]].pp);
+                SetMonData(&gEnemyParty[i], MON_DATA_MOVE1 + j, (u8 *)&eSecretBaseRecord->partyMoves[i * 4 + j]);
+                SetMonData(&gEnemyParty[i], MON_DATA_PP1 + j, &gBattleMoves[eSecretBaseRecord->partyMoves[i * 4 + j]].pp);
             }
         }
     }
@@ -1097,13 +1095,13 @@ void CreateSecretBaseEnemyParty(struct SecretBaseRecord *secretBaseRecord)
 
 u8 GetSecretBaseTrainerPicIndex(void)
 {
-    u8 trainerClass = gSecretBaseTrainerClasses[gSecretBaseRecord.gender][gSecretBaseRecord.trainerId[0] % 5];
+    u8 trainerClass = gSecretBaseTrainerClasses[eSecretBaseRecord->gender][eSecretBaseRecord->trainerId[0] % 5];
     return gTrainerClassToPicIndex[trainerClass];
 }
 
 u8 GetSecretBaseTrainerNameIndex(void)
 {
-    u8 trainerClass = gSecretBaseTrainerClasses[gSecretBaseRecord.gender][gSecretBaseRecord.trainerId[0] % 5];
+    u8 trainerClass = gSecretBaseTrainerClasses[eSecretBaseRecord->gender][eSecretBaseRecord->trainerId[0] % 5];
     return gTrainerClassToNameIndex[trainerClass];
 }
 
@@ -1208,7 +1206,7 @@ void CopyPlayerPartyMonToBattleData(u8 battleIndex, u8 partyIndex)
     GetMonData(&gPlayerParty[partyIndex], MON_DATA_NICKNAME, nickname);
     StringCopy10(gBattleMons[battleIndex].nickname, nickname);
     GetMonData(&gPlayerParty[partyIndex], MON_DATA_OT_NAME, gBattleMons[battleIndex].otName);
-    *(unk_20160BC + GetBankSide(battleIndex)) = gBattleMons[battleIndex].hp;
+    ewram160BC[GetBankSide(battleIndex)] = gBattleMons[battleIndex].hp;
 
     for (i = 0; i < 8; i++)
         gBattleMons[battleIndex].statStages[i] = 6;
diff --git a/src/pokemon/pokemon_3.c b/src/pokemon/pokemon_3.c
index 9c2cb4730..19786e506 100644
--- a/src/pokemon/pokemon_3.c
+++ b/src/pokemon/pokemon_3.c
@@ -22,6 +22,7 @@
 #include "string_util.h"
 #include "text.h"
 #include "util.h"
+#include "ewram.h"
 
 extern u8 gPlayerPartyCount;
 extern u8 gEnemyPartyCount;
diff --git a/src/pokemon/pokemon_menu.c b/src/pokemon/pokemon_menu.c
index 7d70e7708..3a2c12db5 100644
--- a/src/pokemon/pokemon_menu.c
+++ b/src/pokemon/pokemon_menu.c
@@ -29,6 +29,7 @@
 #include "fieldmap.h"
 #include "item_menu.h"
 #include "player_pc.h"
+#include "ewram.h"
 
 /*
 Pokemon menu:
@@ -49,7 +50,6 @@ extern u8 gUnknown_0202E8F5;
 extern u8 gUnknown_0202E8F6;
 extern u8 gUnknown_02038561;
 extern u16 gUnknown_0202E8F8;
-extern u8 ewram[];
 extern void (*gUnknown_03004AE4)(u8 taskID, u16 itemID, TaskFunc func);
 extern TaskFunc gUnknown_03005CF0;
 
diff --git a/src/pokemon/pokemon_storage_system.c b/src/pokemon/pokemon_storage_system.c
index 5e97523e2..4a68b846a 100644
--- a/src/pokemon/pokemon_storage_system.c
+++ b/src/pokemon/pokemon_storage_system.c
@@ -2,6 +2,7 @@
 #include "pokemon_storage_system.h"
 #include "menu.h"
 #include "string_util.h"
+#include "ewram.h"
 
 struct StorageAction {
     u8 *text;
@@ -10,15 +11,8 @@ struct StorageAction {
 
 extern const struct StorageAction gUnknown_083B6DF4[];
 
-extern const u8 unk_2000000[];
-
 EWRAM_DATA struct PokemonStorage gPokemonStorage = {0};
 
-#define gUnk2002694 (u8 *)(&unk_2000000[0x2694])
-#define gUnk20026A6 (u8 *)(&unk_2000000[0x26a6])
-#define gUnk20011fa (u8 *)(&unk_2000000[0x11fa])
-#define gUnk20026e4 (u8 *)(&unk_2000000[0x26e4])
-
 void sub_8098898(u8 index) {
     u8 *ptr;
 
diff --git a/src/pokemon/pokemon_summary_screen.c b/src/pokemon/pokemon_summary_screen.c
index 00a0bea29..d1d226b80 100644
--- a/src/pokemon/pokemon_summary_screen.c
+++ b/src/pokemon/pokemon_summary_screen.c
@@ -7,14 +7,13 @@
 #include "string_util.h"
 #include "strings2.h"
 #include "tv.h"
-
-extern struct Pokemon *unk_2018000;
+#include "ewram.h"
 
 bool8 PokemonSummaryScreen_CheckOT(struct Pokemon *mon)
 {
     u32 trainerId;
 
-    if (unk_2018000 == gEnemyParty)
+    if (ewram18000_3 == gEnemyParty)
     {
         u8 enemyId = GetMultiplayerId() ^ 1;
         trainerId = gLinkPlayers[enemyId].trainerId & 0xFFFF;
diff --git a/src/rom3.c b/src/rom3.c
index 75dfdf2a2..16e605390 100644
--- a/src/rom3.c
+++ b/src/rom3.c
@@ -16,11 +16,7 @@
 #include "util.h"
 #include "battle_message.h"
 #include "data2.h"
-
-extern u8 unk_2000000[];
-
-#define EWRAM_14000 ((u8 *)(unk_2000000 + 0x14000))
-#define EWRAM_15000 ((u8 *)(unk_2000000 + 0x15000))
+#include "ewram.h"
 
 extern u16 gBattleTypeFlags;
 extern u16 gBattleWeather;
@@ -403,16 +399,18 @@ void PrepareBufferDataTransferLink(u8 a, u16 size, u8 *data)
         gTasks[gUnknown_020238C4].data[12] = gTasks[gUnknown_020238C4].data[14];
         gTasks[gUnknown_020238C4].data[14] = 0;
     }
-    unk_2000000[gTasks[gUnknown_020238C4].data[14] + 0x14000] = a;
-    unk_2000000[gTasks[gUnknown_020238C4].data[14] + 0x14001] = gActiveBank;
-    unk_2000000[gTasks[gUnknown_020238C4].data[14] + 0x14002] = gBankAttacker;
-    unk_2000000[gTasks[gUnknown_020238C4].data[14] + 0x14003] = gBankTarget;
-    unk_2000000[gTasks[gUnknown_020238C4].data[14] + 0x14004] = r9;
-    unk_2000000[gTasks[gUnknown_020238C4].data[14] + 0x14005] = (r9 & 0x0000FF00) >> 8;
-    unk_2000000[gTasks[gUnknown_020238C4].data[14] + 0x14006] = gAbsentBankFlags;
-    unk_2000000[gTasks[gUnknown_020238C4].data[14] + 0x14007] = gEffectBank;
+
+    ewram14000arr(0, gTasks[gUnknown_020238C4].data[14]) = a;
+    ewram14000arr(1, gTasks[gUnknown_020238C4].data[14]) = gActiveBank;
+    ewram14000arr(2, gTasks[gUnknown_020238C4].data[14]) = gBankAttacker;
+    ewram14000arr(3, gTasks[gUnknown_020238C4].data[14]) = gBankTarget;
+    ewram14000arr(4, gTasks[gUnknown_020238C4].data[14]) = r9;
+    ewram14000arr(5, gTasks[gUnknown_020238C4].data[14]) = (r9 & 0x0000FF00) >> 8;
+    ewram14000arr(6, gTasks[gUnknown_020238C4].data[14]) = gAbsentBankFlags;
+    ewram14000arr(7, gTasks[gUnknown_020238C4].data[14]) = gEffectBank;
+
     for (i = 0; i < size; i++)
-        unk_2000000[gTasks[gUnknown_020238C4].data[14] + 0x14008 + i] = data[i];
+        ewram14008arr(i, gTasks[gUnknown_020238C4].data[14]) = data[i];
     gTasks[gUnknown_020238C4].data[14] = gTasks[gUnknown_020238C4].data[14] + r9 + 8;
 }
 
@@ -452,8 +450,8 @@ void sub_800C1A8(u8 taskId)
                     gTasks[taskId].data[12] = 0;
                     gTasks[taskId].data[15] = 0;
                 }
-                var = (unk_2000000[gTasks[taskId].data[15] + 0x14004] | (unk_2000000[gTasks[taskId].data[15] + 0x14005] << 8)) + 8;
-                SendBlock(bitmask_all_link_players_but_self(), &unk_2000000[gTasks[taskId].data[15] + 0x14000], var);
+                var = (ewram14004arr(0, gTasks[taskId].data[15]) | (ewram14004arr(1, gTasks[taskId].data[15]) << 8)) + 8;
+                SendBlock(bitmask_all_link_players_but_self(), &ewram14000arr(0, gTasks[taskId].data[15]), var);
                 gTasks[taskId].data[11]++;
             }
             else
@@ -466,7 +464,7 @@ void sub_800C1A8(u8 taskId)
     case 4:
         if (sub_8007ECC())
         {
-            var = unk_2000000[gTasks[taskId].data[15] + 0x14004] | (unk_2000000[gTasks[taskId].data[15] + 0x14005] << 8);
+            var = (ewram14004arr(0, gTasks[taskId].data[15]) | (ewram14004arr(1, gTasks[taskId].data[15]) << 8));
             gTasks[taskId].data[13] = 1;
             gTasks[taskId].data[15] = gTasks[taskId].data[15] + var + 8;
             gTasks[taskId].data[11] = 3;
@@ -537,28 +535,28 @@ void sub_800C47C(u8 taskId)
             gTasks[taskId].data[12] = 0;
             gTasks[taskId].data[15] = 0;
         }
-        r4 = unk_2000000[0x15000 + gTasks[taskId].data[15] + 1];
-        r7 = unk_2000000[0x15000 + gTasks[taskId].data[15] + 4] | (unk_2000000[0x15000 + gTasks[taskId].data[15] + 5] << 8);
-        switch (unk_2000000[0x15000 + gTasks[taskId].data[15] + 0])
+        r4 = ewram15000arr(1, gTasks[taskId].data[15]);
+        r7 = ewram15000arr(4, gTasks[taskId].data[15]) | (ewram15000arr(5, gTasks[taskId].data[15]) << 8);
+        switch (ewram15000arr(0, gTasks[taskId].data[15]))
         {
         case 0:
             if (gBattleExecBuffer & gBitTable[r4])
                 return;
-            memcpy(gBattleBufferA[r4], &unk_2000000[0x15000 + gTasks[taskId].data[15] + 8], r7);
+            memcpy(gBattleBufferA[r4], &ewram15000arr(8, gTasks[taskId].data[15]), r7);
             sub_80155A4(r4);
             if (!(gBattleTypeFlags & BATTLE_TYPE_WILD))
             {
-                gBankAttacker = unk_2000000[0x15000 + gTasks[taskId].data[15] + 2];
-                gBankTarget = unk_2000000[0x15000 + gTasks[taskId].data[15] + 3];
-                gAbsentBankFlags = unk_2000000[0x15000 + gTasks[taskId].data[15] + 6];
-                gEffectBank = unk_2000000[0x15000 + gTasks[taskId].data[15] + 7];
+                gBankAttacker = ewram15000arr(2, gTasks[taskId].data[15]);
+                gBankTarget = ewram15000arr(3, gTasks[taskId].data[15]);
+                gAbsentBankFlags = ewram15000arr(6, gTasks[taskId].data[15]);
+                gEffectBank = ewram15000arr(7, gTasks[taskId].data[15]);
             }
             break;
         case 1:
-            memcpy(gBattleBufferB[r4], &unk_2000000[0x15000 + gTasks[taskId].data[15] + 8], r7);
+            memcpy(gBattleBufferB[r4], &ewram15000arr(8, gTasks[taskId].data[15]), r7);
             break;
         case 2:
-            r2 = unk_2000000[0x15000 + gTasks[taskId].data[15] + 8];
+            r2 = ewram15000arr(8, gTasks[taskId].data[15]);
             gBattleExecBuffer &= ~(gBitTable[r4] << (r2 * 4));
             break;
         }
diff --git a/src/rom_800D42C.c b/src/rom_800D42C.c
index f51779e65..bf6d03fb7 100644
--- a/src/rom_800D42C.c
+++ b/src/rom_800D42C.c
@@ -2,6 +2,7 @@
 #include "battle.h"
 #include "link.h"
 #include "text.h"
+#include "ewram.h"
 
 extern u16 gBattleTypeFlags;
 extern u8 gBattleOutcome;
diff --git a/src/rom_8077ABC.c b/src/rom_8077ABC.c
index 285c992ca..10d58dcb5 100644
--- a/src/rom_8077ABC.c
+++ b/src/rom_8077ABC.c
@@ -12,6 +12,7 @@
 #include "task.h"
 #include "trig.h"
 #include "util.h"
+#include "ewram.h"
 
 #define GET_UNOWN_LETTER(personality) ((\
       (((personality & 0x03000000) >> 24) << 6) \
@@ -94,8 +95,6 @@ extern struct OamData gOamData_837DF9C[];
 extern const union AnimCmd *const gDummySpriteAnimTable[];
 extern const union AffineAnimCmd *const gDummySpriteAffineAnimTable[];
 
-extern struct Struct_unk_2019348 unk_2019348;
-extern struct TransformStatus gTransformStatuses[];
 extern u16 gBattleMonPartyPositions[];
 extern u16 gBattleTypeFlags;
 extern u32 gTransformPersonalities[NUM_BATTLE_SLOTS];
@@ -204,21 +203,21 @@ u8 sub_8077ABC(u8 slot, u8 a2) {
     case 4:
     default:
         if (NotInBattle()) {
-            if (unk_2019348.field_4 & 1) {
-                species = unk_2019348.field_2;
+            if (ewram19348.unk4 & 1) {
+                species = ewram19348.unk2;
             } else {
-                species = unk_2019348.field_0;
+                species = ewram19348.unk0;
             }
         } else {
             if (GetBankSide(slot)) {
-                transform = &gTransformStatuses[slot];
+                transform = &eTransformStatuses[slot];
                 if (!transform->species) {
                     species = GetMonData(&gEnemyParty[gBattleMonPartyPositions[slot]], MON_DATA_SPECIES);
                 } else {
                     species = transform->species;
                 }
             } else {
-                transform = &gTransformStatuses[slot];
+                transform = &eTransformStatuses[slot];
                 if (!transform->species) {
                     species = GetMonData(&gPlayerParty[gBattleMonPartyPositions[slot]], MON_DATA_SPECIES);
                 } else {
@@ -246,13 +245,13 @@ u8 sub_8077BFC(u8 slot, u16 species) {
     if (!GetBankSide(slot) || NotInBattle()) {
         if (species == SPECIES_UNOWN) {
             if (NotInBattle()) {
-                if (unk_2019348.field_4 & 1) {
-                    personality = unk_2019348.field_10;
+                if (ewram19348.unk4 & 1) {
+                    personality = ewram19348.unk10;
                 } else {
-                    personality = unk_2019348.field_8;
+                    personality = ewram19348.unk8;
                 }
             } else {
-                transform = &gTransformStatuses[slot];
+                transform = &eTransformStatuses[slot];
                 if (!transform->species) {
                     personality = GetMonData(&gPlayerParty[gBattleMonPartyPositions[slot]], MON_DATA_PERSONALITY);
                 } else {
@@ -275,7 +274,7 @@ u8 sub_8077BFC(u8 slot, u16 species) {
         }
     } else {
         if (species == SPECIES_UNOWN) {
-            transform = &gTransformStatuses[slot];
+            transform = &eTransformStatuses[slot];
             if (!transform->species) {
                 personality = GetMonData(&gEnemyParty[gBattleMonPartyPositions[slot]], MON_DATA_PERSONALITY);
             } else {
@@ -339,13 +338,13 @@ u8 sub_8077EE4(u8 slot, u8 a2) {
     struct TransformStatus *transform;
     if (a2 == 3 || a2 == 4) {
         if (NotInBattle()) {
-            if (unk_2019348.field_4 & 1) {
-                species = unk_2019348.field_2;
+            if (ewram19348.unk4 & 1) {
+                species = ewram19348.unk2;
             } else {
-                species = unk_2019348.field_0;
+                species = ewram19348.unk0;
             }
         } else {
-            transform = &gTransformStatuses[slot];
+            transform = &eTransformStatuses[slot];
             if (!transform->species) {
                 species = gUnknown_0202F7CA[slot];
             } else {
@@ -383,14 +382,14 @@ u8 sub_8077FC0(u8 slot) {
     r6 = sub_8077ABC(slot, 1);
     if (!NotInBattle()) {
         if (GetBankSide(slot)) {
-            transform = &gTransformStatuses[slot];
+            transform = &eTransformStatuses[slot];
             if (!transform->species) {
                 var = GetMonData(&gEnemyParty[gBattleMonPartyPositions[slot]], MON_DATA_SPECIES);
             } else {
                 var = transform->species;
             }
         } else {
-            transform = &gTransformStatuses[slot];
+            transform = &eTransformStatuses[slot];
             if (!transform->species) {
                 var = GetMonData(&gPlayerParty[gBattleMonPartyPositions[slot]], MON_DATA_SPECIES);
             } else {
@@ -1035,7 +1034,6 @@ bool8 sub_8078E38() {
 }
 
 void sub_8078E70(u8 sprite, u8 a2) {
-    struct Struct_2017810 *unk;
     u8 r7 = gSprites[sprite].data0;
     if (NotInBattle() || IsAnimBankSpriteVisible(r7)) {
         gSprites[sprite].invisible = FALSE;
@@ -1043,8 +1041,7 @@ void sub_8078E70(u8 sprite, u8 a2) {
     gSprites[sprite].oam.objMode = a2;
     gSprites[sprite].affineAnimPaused = TRUE;
     if (!NotInBattle() && !gSprites[sprite].oam.affineMode) {
-        unk = &unk_2017810[r7];
-        gSprites[sprite].oam.matrixNum = unk->field_6;
+        gSprites[sprite].oam.matrixNum = ewram17810[r7].unk6;
     }
     gSprites[sprite].oam.affineMode = 3;
     CalcCenterToCornerVec(&gSprites[sprite], gSprites[sprite].oam.shape, gSprites[sprite].oam.size, gSprites[sprite].oam.affineMode);
@@ -1541,11 +1538,11 @@ u16 sub_8079B10(u8 sprite) {
     for (i = 0; i < (sizeof(gBattleMonSprites) / sizeof(u8)); i++) {
         if (gBattleMonSprites[i] == sprite) {
             if (NotInBattle()) {
-                species = unk_2019348.field_0;
+                species = ewram19348.unk0;
                 return gMonBackPicCoords[species].y_offset;
             } else {
                 if (!GetBankSide(i)) {
-                    transform = &gTransformStatuses[slot];
+                    transform = &eTransformStatuses[slot];
                     if (!transform->species) {
                         species = GetMonData(&gPlayerParty[gBattleMonPartyPositions[i]], MON_DATA_SPECIES);
                     } else {
@@ -1553,7 +1550,7 @@ u16 sub_8079B10(u8 sprite) {
                     }
                     return gMonBackPicCoords[species].y_offset;
                 } else {
-                    transform = &gTransformStatuses[slot];
+                    transform = &eTransformStatuses[slot];
                     if (!transform->species) {
                         species = GetMonData(&gEnemyParty[gBattleMonPartyPositions[i]], MON_DATA_SPECIES);
                     } else {
@@ -1764,12 +1761,12 @@ int sub_807A100(u8 slot, u8 a2) {
     const struct MonCoords *coords;
     struct TransformStatus *transform;
     if (NotInBattle()) {
-        if (unk_2019348.field_4 & 1) {
-            species = unk_2019348.field_2;
-            personality = unk_2019348.field_10;
+        if (ewram19348.unk4 & 1) {
+            species = ewram19348.unk2;
+            personality = ewram19348.unk10;
         } else {
-            species = unk_2019348.field_0;
-            personality = unk_2019348.field_8;
+            species = ewram19348.unk0;
+            personality = ewram19348.unk8;
         }
         if (species == SPECIES_UNOWN) {
             letter = GET_UNOWN_LETTER(personality);
@@ -1788,7 +1785,7 @@ int sub_807A100(u8 slot, u8 a2) {
         }
     } else {
         if (!GetBankSide(slot)) {
-            transform = &gTransformStatuses[slot];
+            transform = &eTransformStatuses[slot];
             if (!transform->species) {
                 species = GetMonData(&gPlayerParty[gBattleMonPartyPositions[slot]], MON_DATA_SPECIES);
                 personality = GetMonData(&gPlayerParty[gBattleMonPartyPositions[slot]], MON_DATA_PERSONALITY);
@@ -1810,7 +1807,7 @@ int sub_807A100(u8 slot, u8 a2) {
                 coords = &gMonBackPicCoords[species];
             }
         } else {
-            transform = &gTransformStatuses[slot];
+            transform = &eTransformStatuses[slot];
             if (!transform->species) {
                 species = GetMonData(&gEnemyParty[gBattleMonPartyPositions[slot]], MON_DATA_SPECIES);
                 personality = GetMonData(&gEnemyParty[gBattleMonPartyPositions[slot]], MON_DATA_PERSONALITY);
diff --git a/src/scene/berry_blender.c b/src/scene/berry_blender.c
index 7ffcc5185..398f62833 100644
--- a/src/scene/berry_blender.c
+++ b/src/scene/berry_blender.c
@@ -20,6 +20,7 @@
 #include "menu_cursor.h"
 #include "trig.h"
 #include "pokeblock.h"
+#include "ewram.h"
 
 //needed to match Blender_ControlHitPitch
 struct MusicPlayerInfo
@@ -207,7 +208,6 @@ extern void de_sub_8073110();
 
 extern struct MusicPlayerInfo gMPlay_SE2;
 extern struct MusicPlayerInfo gMPlay_BGM;
-extern u8 ewram[];
 extern u16 gScriptItemId;
 extern u8 gUnknown_020297ED;
 extern u8 byte_3002A68;
@@ -828,7 +828,7 @@ static bool8 sub_804E2EC(void)
     switch (gBerryBlenderData->field_1)
     {
     case 0:
-        LZDecompressWram(gUnknown_08E6C100, &ewram[0x10000]);
+        LZDecompressWram(gUnknown_08E6C100, ewram10000);
         gBerryBlenderData->field_1++;
         break;
     case 1:
@@ -843,7 +843,7 @@ static bool8 sub_804E2EC(void)
         break;
     case 2:
         {
-            void* offsetRead = &ewram[0x10000];
+            void* offsetRead = ewram10000;
             void* offsetWrite = (void*)(VRAM);
             u32 size = 0x2000;
             while (TRUE)
@@ -862,16 +862,16 @@ static bool8 sub_804E2EC(void)
         }
         break;
     case 3:
-        LZDecompressWram(gUnknown_08E6C920, &ewram[0x10000]);
+        LZDecompressWram(gUnknown_08E6C920, ewram10000);
         gBerryBlenderData->field_1++;
         break;
     case 4:
-        LZDecompressWram(gUnknown_08E6D354, &ewram[0x13000]);
+        LZDecompressWram(gUnknown_08E6D354, ewram13000);
         gBerryBlenderData->field_1++;
         break;
     case 5:
         {
-            void* offsetRead = &ewram[0x10000];
+            void* offsetRead = ewram10000;
             void* offsetWrite = (void*)(VRAM + 0xE000);
 
             DmaCopy16(3, offsetRead, offsetWrite, 0x1000);
@@ -880,7 +880,7 @@ static bool8 sub_804E2EC(void)
         break;
     case 6:
         {
-            void* offsetRead = &ewram[0x11000];
+            void* offsetRead = ewram11000;
             void* offsetWrite = (void*)(VRAM + 0xF000);
 
             DmaCopy16(3, offsetRead, offsetWrite, 0x1000);
@@ -890,7 +890,7 @@ static bool8 sub_804E2EC(void)
     case 7:
         {
             u16 i;
-            u16* palStore = (u16*)(&ewram[0x13000]);
+            u16* palStore = (u16*)(ewram13000);
             void* offsetRead;
             void* offsetWrite;
 
@@ -898,7 +898,7 @@ static bool8 sub_804E2EC(void)
             {
                 *(palStore + i) |= 0x100;
             }
-            offsetRead = &ewram[0x13000];
+            offsetRead = ewram13000;
             offsetWrite = (void*)(VRAM + 0x6000);
             DmaCopy16(3, offsetRead, offsetWrite, 0x500);
             LoadPalette(sBlenderOuterPal, 0x80, 0x20);
@@ -937,7 +937,7 @@ void sub_804E538(void)
 {
     u8* field6F; //this temp value is needed to match
 
-    gBerryBlenderData = (struct BerryBlenderData*)(&ewram[0x18000]);
+    gBerryBlenderData = eBerryBlenderData;
 
     field6F = &gBerryBlenderData->field_6F;
     gBerryBlenderData->field_0 = 0;
@@ -1111,7 +1111,7 @@ void sub_804E990(void)
     s32 i;
 
     REG_DISPCNT = 0;
-    gBerryBlenderData = (struct BerryBlenderData*)(&ewram[0x18000]);
+    gBerryBlenderData = eBerryBlenderData;
     gBerryBlenderData->field_0 = 0;
     gBerryBlenderData->field_134 = 0;
     for (i = 0; i < BLENDER_MAX_PLAYERS; i++)
@@ -3710,7 +3710,7 @@ static void sub_80527BC(void)
         gUnknown_020297E0 = 0;
         gUnknown_020297DC = 2;
         for (i = 0; i < 200; i++)
-            ewram[i] = 0;
+            gSharedMem[i] = 0;
         gUnknown_020297E8 = 0;
     }
     for (i = 0; i < 100; i++)
@@ -3719,7 +3719,7 @@ static void sub_80527BC(void)
             gUnknown_020297E0++;
         else
         {
-            u16* ewramPtr = ((u16*)(ewram));
+            u16* ewramPtr = ((u16*)(gSharedMem));
             ewramPtr[gUnknown_020297E4] = gUnknown_020297E0;
             gUnknown_020297E4++;
             gUnknown_020297E0 = 0;
diff --git a/src/scene/contest_painting.c b/src/scene/contest_painting.c
index 3662efdec..0f745b391 100644
--- a/src/scene/contest_painting.c
+++ b/src/scene/contest_painting.c
@@ -12,8 +12,7 @@
 #include "strings.h"
 #include "text.h"
 #include "unknown_task.h"
-
-extern u8 unk_2000000[];
+#include "ewram.h"
 
 static u8 gUnknown_03000750;
 static u16 gUnknown_03000752;
@@ -26,9 +25,6 @@ u8 gUnknown_03005E40[0x4C];
 struct ContestEntry *gUnknown_03005E8C;
 u16 (*gUnknown_03005E90)[];
 
-extern struct ContestEntry unk_2015de0;
-extern struct Unk2015E00 unk_2015e00;
-
 static const u16 gPictureFramePalettes[][16] =
 {
     INCBIN_U16("graphics/picture_frame/bg0.gbapal"),
@@ -153,7 +149,7 @@ static void ShowContestPainting(void)
     case 0:
         remove_some_task();
         SetVBlankCallback(NULL);
-        gUnknown_03005E8C = &unk_2015de0;
+        gUnknown_03005E8C = &ewram15DE0;
         ContestPaintingInitVars(TRUE);
         ContestPaintingInitBG();
         gMain.state++;
@@ -184,15 +180,15 @@ static void ShowContestPainting(void)
     case 2:
         SeedRng(gMain.vblankCounter1);
         InitKeys();
-        ContestPaintingInitWindow(unk_2000000[0x15DDF]);
+        ContestPaintingInitWindow(ewram15DDF);
         gMain.state++;
         break;
     case 3:
-        sub_8107090(unk_2000000[0x15DDE], unk_2000000[0x15DDF]);
+        sub_8107090(ewram15DDE, ewram15DDF);
         gMain.state++;
         break;
     case 4:
-        ContestPaintingPrintCaption(unk_2000000[0x15DDE], unk_2000000[0x15DDF]);
+        ContestPaintingPrintCaption(ewram15DDE, ewram15DDF);
         LoadPalette(gUnknown_083F6140, 0, 1 * 2);
         DmaClear32(3, PLTT, 0x400);
         BeginFastPaletteFade(2);
@@ -753,8 +749,8 @@ static u8 sub_8106EE0(u8 arg0)
 
 static void sub_8106F4C(void)
 {
-    gUnknown_03005E90 = &unk_2015e00.unk2017e00;
-    gUnknown_03005E10 = &unk_2015e00.unk2015e00;
+    gUnknown_03005E90 = &ewram15E00.unk2017e00;
+    gUnknown_03005E10 = &ewram15E00.unk2015e00;
 }
 
 static void sub_8106F6C(u8 arg0)
diff --git a/src/scene/credits.c b/src/scene/credits.c
index cf10137c1..d9e97c570 100644
--- a/src/scene/credits.c
+++ b/src/scene/credits.c
@@ -16,6 +16,7 @@
 #include "starter_choose.h"
 #include "task.h"
 #include "trig.h"
+#include "ewram.h"
 
 asm(".set REG_BASE, 0x4000000");
 asm(".set OFFSET_REG_BLDCNT,      0x50");
@@ -162,18 +163,8 @@ struct CreditsEntry
     u8 *text;
 };
 
-extern u8 ewram[];
-
-#define EWRAM_1F800          ((u16 *)(ewram + 0x1F800))
-#define HALL_OF_FAME_SHEET_0 ((u8 *)(ewram + 0x1E000))
-#define HALL_OF_FAME_SHEET_1 ((u8 *)(ewram + 0x1E800))
-#define HALL_OF_FAME_SHEET_2 ((u8 *)(ewram + 0x1F000))
-#define ewram1c000           (*(struct Unk201C000 *)(ewram + 0x1C000))
-
-extern struct HallOfFame gHallOfFame;
 extern u8 unk_201e800[0x800];
 extern u8 unk_201f000[0x800];
-extern u16 unk_201f800[];
 
 extern struct SpriteTemplate gUnknown_02024E8C;
 
diff --git a/src/scene/egg_hatch.c b/src/scene/egg_hatch.c
index 032dcd284..d363e4bcd 100644
--- a/src/scene/egg_hatch.c
+++ b/src/scene/egg_hatch.c
@@ -20,8 +20,8 @@
 #include "trig.h"
 #include "rng.h"
 #include "trade.h"
+#include "ewram.h"
 
-extern u8 ewram[];
 extern struct SpriteTemplate gUnknown_02024E8C;
 
 struct EggHatchData
@@ -416,7 +416,7 @@ static u8 EggHatchCreateMonSprite(u8 a0, u8 switchID, u8 pokeID)
         {
             u16 species = GetMonData(mon, MON_DATA_SPECIES);
             u32 pid = GetMonData(mon, MON_DATA_PERSONALITY);
-            HandleLoadSpecialPokePic(&gMonFrontPicTable[species], gMonFrontPicCoords[species].coords, gMonFrontPicCoords[species].y_offset,(u32)(&ewram[0]), gUnknown_081FAF4C[2 * a0 + 1], species, pid);
+            HandleLoadSpecialPokePic(&gMonFrontPicTable[species], gMonFrontPicCoords[species].coords, gMonFrontPicCoords[species].y_offset, ewram0_6, gUnknown_081FAF4C[2 * a0 + 1], species, pid);
             LoadCompressedObjectPalette(GetMonSpritePalStruct(mon));
         }
         break;
@@ -460,7 +460,7 @@ static void CB2_EggHatch_0(void)
     {
     case 0:
         REG_DISPCNT = 0;
-        gEggHatchData = (struct EggHatchData*)(&ewram[0x18000]);
+        gEggHatchData = eEggHatchData;
         gEggHatchData->eggPartyID = gSpecialVar_0x8004;
         gEggHatchData->eggShardVelocityID = 0;
         ResetTasks();
@@ -479,8 +479,8 @@ static void CB2_EggHatch_0(void)
         break;
     case 2:
         LZDecompressVram(&gUnknown_08D00000, (void*)(VRAM));
-        CpuSet(&gUnknown_08D00524, &ewram[0], 0x800);
-        DmaCopy16(3, &ewram[0], (void*)(VRAM + 0x2800), 0x500);
+        CpuSet(&gUnknown_08D00524, ewram0_7, 0x800);
+        DmaCopy16(3, ewram0_7, (void*)(VRAM + 0x2800), 0x500);
         LoadCompressedPalette(&gUnknown_08D004E0, 0, 0x20);
         gMain.state++;
         break;
diff --git a/src/scene/evolution_scene.c b/src/scene/evolution_scene.c
index 24168dc56..742f663f6 100644
--- a/src/scene/evolution_scene.c
+++ b/src/scene/evolution_scene.c
@@ -24,6 +24,7 @@
 #include "pokemon_summary_screen.h"
 #include "menu_cursor.h"
 #include "strings2.h"
+#include "ewram.h"
 
 struct EvoInfo
 {
@@ -55,8 +56,6 @@ struct EvoInfo
     u8 unkA0C4; // 0x201E8C4
 };
 
-#define sEvoInfo ((*(struct EvoInfo*)(ewram + 0x14800)))
-
 void EvolutionRenameMon(struct Pokemon *mon, u16 oldSpecies, u16 newSpecies);
 void sub_8024CEC(void);
 void sub_8023A80(void);
@@ -78,7 +77,6 @@ extern u8 gBattleTerrain;
 extern u8 gReservedSpritePaletteCount;
 extern u16 gMoveToLearn;
 extern struct SpriteTemplate gUnknown_02024E8C;
-extern u8 gUnk_2009000[]; // won't match if I 'ewram' it
 extern bool8 gAffineAnimsDisabled;
 extern u8 gDisplayedStringBattle[];
 extern u8 gBattleTextBuff2[];
@@ -276,7 +274,7 @@ void EvolutionScene(struct Pokemon* mon, u16 speciesToEvolve, bool8 canStopEvo,
     gTasks[ID].tEvoWasStopped = FALSE;
     gTasks[ID].tPartyID = partyID;
 
-    memcpy(gUnk_2009000, &gPlttBufferUnfaded[0x20], 0x60);
+    memcpy(ewram9000_hack, &gPlttBufferUnfaded[0x20], 0x60);
 
     REG_DISPCNT = DISPCNT_OBJ_ON | DISPCNT_BG_ALL_ON | DISPCNT_OBJ_1D_MAP;
     SetHBlankCallback(EvoDummyFunc);
@@ -639,7 +637,7 @@ static void Task_EvolutionScene(u8 taskID)
         {
             m4aMPlayAllStop();
             PlayCry1(gTasks[taskID].tPostEvoSpecies, 0);
-            memcpy(&gPlttBufferUnfaded[0x20], gUnk_2009000, 0x60);
+            memcpy(&gPlttBufferUnfaded[0x20], ewram9000_hack, 0x60);
             BeginNormalPaletteFade(0x1C, 0, 0x10, 0, 0);
             gTasks[taskID].tState++;
         }
@@ -981,7 +979,7 @@ static void Task_TradeEvolutionScene(u8 taskID)
         if (IsSEPlaying())
         {
             PlayCry1(gTasks[taskID].tPostEvoSpecies, 0);
-            memcpy(&gPlttBufferUnfaded[0x20], gUnk_2009000, 0x60);
+            memcpy(&gPlttBufferUnfaded[0x20], ewram9000_hack, 0x60);
             BeginNormalPaletteFade(1, 0, 0x10, 0, 0);
             gTasks[taskID].tState++;
         }
diff --git a/src/scene/hall_of_fame.c b/src/scene/hall_of_fame.c
index 6f7df576b..72bd051da 100644
--- a/src/scene/hall_of_fame.c
+++ b/src/scene/hall_of_fame.c
@@ -17,10 +17,10 @@
 #include "decompress.h"
 #include "rng.h"
 #include "trig.h"
+#include "ewram.h"
 
 static EWRAM_DATA u32 sUnknown_0203931C = 0;
 
-extern u8 ewram[];
 extern bool8 gUnknown_02039324; // has hall of fame records
 extern void (*gGameContinueCallback)(void);
 extern struct MusicPlayerInfo gMPlay_BGM;
@@ -156,69 +156,69 @@ static const struct OamData sOamData_840B598 =
 
 void* const gUnknown_0840B5A0[] =
 {
-    &ewram[0x08000],
-    &ewram[0x0A000],
-    &ewram[0x0C000],
-    &ewram[0x0E000],
-    &ewram[0x10000],
-    &ewram[0x14000],
-    &ewram[0x18000]
+    ewram8000,
+    ewramA000,
+    ewramC000,
+    ewramE000,
+    ewram10000,
+    ewram14000,
+    ewram18000_2
 };
 
 static const struct SpriteFrameImage sSpriteImageTable_840B5BC[] =
 {
-    {&ewram[0x8000], 0x800},
-    {&ewram[0x8800], 0x800},
-    {&ewram[0x9000], 0x800},
-    {&ewram[0x9800], 0x800}
+    {ewram8000, 0x800},
+    {ewram8800, 0x800},
+    {ewram9000, 0x800},
+    {ewram9800, 0x800}
 };
 
 static const struct SpriteFrameImage sSpriteImageTable_840B5DC[] =
 {
-    {&ewram[0xA000], 0x800},
-    {&ewram[0xA800], 0x800},
-    {&ewram[0xB000], 0x800},
-    {&ewram[0xB800], 0x800}
+    {ewramA000, 0x800},
+    {ewramA800, 0x800},
+    {ewramB000, 0x800},
+    {ewramB800, 0x800}
 };
 
 static const struct SpriteFrameImage sSpriteImageTable_840B5FC[] =
 {
-    {&ewram[0xC000], 0x800},
-    {&ewram[0xC800], 0x800},
-    {&ewram[0xD000], 0x800},
-    {&ewram[0xD800], 0x800}
+    {ewramC000, 0x800},
+    {ewramC800, 0x800},
+    {ewramD000, 0x800},
+    {ewramD800, 0x800}
 };
 
 static const struct SpriteFrameImage sSpriteImageTable_840B61C[] =
 {
-    {&ewram[0xE000], 0x800},
-    {&ewram[0xE800], 0x800},
-    {&ewram[0xF000], 0x800},
-    {&ewram[0xF800], 0x800}
+    {ewramE000, 0x800},
+    {ewramE800, 0x800},
+    {ewramF000, 0x800},
+    {ewramF800, 0x800}
 };
 
 static const struct SpriteFrameImage sSpriteImageTable_840B63C[] =
 {
-    {&ewram[0x10000], 0x800},
-    {&ewram[0x10800], 0x800},
-    {&ewram[0x11000], 0x800},
-    {&ewram[0x11800], 0x800}
+    {ewram10000, 0x800},
+    {ewram10800, 0x800},
+    {ewram11000, 0x800},
+    {ewram11800, 0x800}
 };
 
 static const struct SpriteFrameImage sSpriteImageTable_840B65C[] =
 {
-    {&ewram[0x14000], 0x800},
-    {&ewram[0x14800], 0x800},
-    {&ewram[0x15000], 0x800},
-    {&ewram[0x15800], 0x800}
+    {ewram14000, 0x800},
+    {ewram14800, 0x800},
+    {ewram15000, 0x800},
+    {ewram15800, 0x800}
 };
 
 static const struct SpriteFrameImage sSpriteImageTable_840B67C[] =
 {
-    {&ewram[0x18000], 0x800},
-    {&ewram[0x18800], 0x800},
-    {&ewram[0x19000], 0x800},
-    {&ewram[0x19800], 0x800}
+    {ewram18000_2, 0x800},
+    {ewram18800, 0x800},
+    {ewram19000, 0x800},
+    {ewram19800, 0x800}
 };
 
 static const struct SpriteFrameImage* const sUnknown_0840B69C[7] =
@@ -486,7 +486,7 @@ static void sub_8141FC4(void)
 static void sub_8141FF8(u8 taskID)
 {
     u16 i, j;
-    struct HallofFameMons* fameMons = (struct HallofFameMons*)(&ewram[0x1C000]);
+    struct HallofFameMons* fameMons = eHallOfFameMons1;
 
     gTasks[taskID].tPokesNumber = 0; // valid pokes
     for (i = 0; i < 6; i++)
@@ -530,13 +530,13 @@ static void sub_8141FF8(u8 taskID)
 static void sub_814217C(u8 taskID)
 {
     u16 i;
-    struct HallofFameMons* fameMons = (struct HallofFameMons*)(&ewram[0x1C000]);
-    struct HallofFameMons* lastSavedTeam = (struct HallofFameMons*)(&ewram[0x1E000]);
+    struct HallofFameMons* fameMons = eHallOfFameMons1;
+    struct HallofFameMons* lastSavedTeam = eHallOfFameMons2;
 
     if (gUnknown_02039324 == FALSE)
     {
         for (i = 0; i < 0x2000; i++)
-            ewram[i + 0x1E000] = 0;
+            ewram1E000(i) = 0;
     }
     else
         sub_8125EC8(3);
@@ -548,8 +548,8 @@ static void sub_814217C(u8 taskID)
     }
     if (i >= HALL_OF_FAME_MAX_TEAMS)
     {
-        struct HallofFameMons* r5 = (struct HallofFameMons*)(&ewram[0x1E000]);
-        struct HallofFameMons* r6 = (struct HallofFameMons*)(&ewram[0x1E000]);
+        struct HallofFameMons* r5 = eHallOfFameMons2;
+        struct HallofFameMons* r6 = eHallOfFameMons2;
         r5++;
         for (i = 0; i < HALL_OF_FAME_MAX_TEAMS - 1; i++, r6++, r5++)
         {
@@ -592,7 +592,7 @@ static void sub_8142320(u8 taskID)
     u8 spriteID;
     s16 xPos, yPos, field4, field6;
 
-    struct HallofFameMons* fameMons = (struct HallofFameMons*)(&ewram[0x1C000]);
+    struct HallofFameMons* fameMons = eHallOfFameMons1;
     u16 currPokeID = gTasks[taskID].tDisplayedPoke;
     struct HallofFameMon* currMon = &fameMons->mons[currPokeID];
 
@@ -623,7 +623,7 @@ static void sub_8142320(u8 taskID)
 
 static void sub_8142404(u8 taskID)
 {
-    struct HallofFameMons* fameMons = (struct HallofFameMons*)(&ewram[0x1C000]);
+    struct HallofFameMons* fameMons = eHallOfFameMons1;
     u16 currPokeID = gTasks[taskID].tDisplayedPoke;
     struct HallofFameMon* currMon = &fameMons->mons[currPokeID];
 
@@ -639,7 +639,7 @@ static void sub_8142404(u8 taskID)
 
 static void sub_8142484(u8 taskID)
 {
-    struct HallofFameMons* fameMons = (struct HallofFameMons*)(&ewram[0x1C000]);
+    struct HallofFameMons* fameMons = eHallOfFameMons1;
     u16 currPokeID = gTasks[taskID].tDisplayedPoke;
     struct HallofFameMon* currMon = &fameMons->mons[currPokeID];
 
@@ -808,7 +808,7 @@ void sub_81428CC(void)
             REG_BLDY = 0;
             sub_81435B8();
 
-            fameMons = (struct HallofFameMons*)(&ewram[0x1C000]);
+            fameMons = eHallOfFameMons1;
             fameMons->mons[0] = sDummyFameMon;
 
             sub_80C5CD4(fameMons);
@@ -847,7 +847,7 @@ static void sub_8142A28(u8 taskID)
         u16 *vram1, *vram2;
 
         u16 i;
-        struct HallofFameMons* savedTeams = (struct HallofFameMons*)(&ewram[0x1E000]);
+        struct HallofFameMons* savedTeams = eHallOfFameMons2;
         for (i = 0; i < HALL_OF_FAME_MAX_TEAMS; i++, savedTeams++)
         {
             if (savedTeams->mons[0].species == 0)
@@ -872,7 +872,7 @@ static void sub_8142A28(u8 taskID)
 
 static void sub_8142B04(u8 taskID)
 {
-    struct HallofFameMons* savedTeams = (struct HallofFameMons*)(&ewram[0x1E000]);
+    struct HallofFameMons* savedTeams = eHallOfFameMons2;
     struct HallofFameMon* currMon;
     u16 i;
     u8* stringPtr;
@@ -937,7 +937,7 @@ static void sub_8142B04(u8 taskID)
 
 static void sub_8142CC8(u8 taskID)
 {
-    struct HallofFameMons* savedTeams = (struct HallofFameMons*)(&ewram[0x1E000]);
+    struct HallofFameMons* savedTeams = eHallOfFameMons2;
     struct HallofFameMon* currMon;
     u16 i;
     u16 currMonID;
@@ -1025,7 +1025,7 @@ static void sub_8142F78(u8 taskID)
     struct HallofFameMons* fameMons;
 
     CpuSet(gPlttBufferFaded, gPlttBufferUnfaded, 0x200);
-    fameMons = (struct HallofFameMons*)(&ewram[0x1C000]);
+    fameMons = eHallOfFameMons1;
     fameMons->mons[0] = sDummyFameMon;
     sub_80C5E38(fameMons);
     gTasks[taskID].func = sub_8142FCC;
@@ -1258,7 +1258,7 @@ static void sub_81433E0(void)
         *((u16*)(VRAM + 0x3000) + i) = 2;
     }
 
-    offsetWrite4 = (u32)(&ewram[0]);
+    offsetWrite4 = ewram0_6;
     size4 = 0x4000;
     while (TRUE)
     {
diff --git a/src/scene/intro.c b/src/scene/intro.c
index a6dd23c92..c4bb1f9ea 100644
--- a/src/scene/intro.c
+++ b/src/scene/intro.c
@@ -1207,7 +1207,8 @@ static void Task_IntroWaitToSetupPart3DoubleFight(u8 taskId)
         gTasks[taskId].func = Task_IntroLoadPart3Streaks;
 }
 
-extern u8 unk_2000000[][32];
+// TODO: use ewram define instead
+extern u8 gSharedMem[][32];
 
 static void Task_IntroLoadPart3Streaks(u8 taskId)
 {
@@ -1217,12 +1218,12 @@ static void Task_IntroLoadPart3Streaks(u8 taskId)
     intro_reset_and_hide_bgs();
     for (i = 0; i < 32; i++)
     {
-        unk_2000000[0][i] = 0;
-        unk_2000000[1][i] = 17;
-        unk_2000000[2][i] = 34;
+        gSharedMem[0][i] = 0;
+        gSharedMem[1][i] = 17;
+        gSharedMem[2][i] = 34;
     }
     vram = (void *)VRAM;
-    DmaCopy16(3, unk_2000000, vram, 0x60);
+    DmaCopy16(3, gSharedMem, vram, 0x60);
     for (i = 0; i < 0x280; i++)
         ((u16 *)(VRAM + 0x3000))[i] = 0xF001;
     for (i = 0; i < 0x80; i++)
diff --git a/src/script_pokemon_util_80C4BF0.c b/src/script_pokemon_util_80C4BF0.c
index f98293a90..011978a0c 100644
--- a/src/script_pokemon_util_80C4BF0.c
+++ b/src/script_pokemon_util_80C4BF0.c
@@ -22,6 +22,7 @@
 #include "script_pokemon_80C4.h"
 #include "species.h"
 #include "task.h"
+#include "ewram.h"
 
 #define CONTEST_ENTRY_PIC_LEFT 10
 #define CONTEST_ENTRY_PIC_TOP 3
diff --git a/src/script_pokemon_util_80F99CC.c b/src/script_pokemon_util_80F99CC.c
index e303d5173..21ff220d2 100644
--- a/src/script_pokemon_util_80F99CC.c
+++ b/src/script_pokemon_util_80F99CC.c
@@ -17,6 +17,7 @@
 #include "string_util.h"
 #include "task.h"
 #include "text.h"
+#include "ewram.h"
 
 extern u8 gPlayerPartyCount;
 extern u16 gSpecialVar_0x8004;
@@ -272,7 +273,7 @@ void HandleMoveTutorPartyMenu(u8 var)
 void sub_80F9EEC(void)
 {
     sub_809D9F0(&gPlayerParty[0], gSpecialVar_0x8004, gPlayerPartyCount - 1, c2_exit_to_overworld_2_switch, 0);
-    unk_2018000.unk8 = 3;
+    UNK_2018000_STRUCT.unk8 = 3;
     gFieldCallback = sub_8080990;
 }