cleanup

17 files changed, 127 insertions, 149 deletions

diff --git a/asm/bonus_field_select.s b/asm/bonus_field_select.s
index 331e00b..75f11da 100755
--- a/asm/bonus_field_select.s
+++ b/asm/bonus_field_select.s
@@ -368,7 +368,7 @@ _080028A0:
 	lsls r2, r2, #1
 	adds r1, r5, r2
 	strb r0, [r1]
-	bl sub_52B30
+	bl SaveFile_WriteToSram
 	movs r0, #2
 	strb r0, [r6]
 _080028CC:
diff --git a/asm/field_select.s b/asm/field_select.s
index f789dbf..2ee614e 100755
--- a/asm/field_select.s
+++ b/asm/field_select.s
@@ -386,7 +386,7 @@ _08008DDA:
 	lsls r2, r2, #1
 	adds r1, r7, r2
 	strb r0, [r1]
-	bl sub_52B30
+	bl SaveFile_WriteToSram
 	movs r0, #3
 	strh r0, [r5, #0xa]
 _08008E00:
diff --git a/asm/high_scores.s b/asm/high_scores.s
index 2c93e68..2db7c6a 100755
--- a/asm/high_scores.s
+++ b/asm/high_scores.s
@@ -1320,7 +1320,7 @@ _0800D8CE:
 	mov r3, sb
 	cmp r3, #1
 	ble _0800D8AC
-	bl sub_52B30
+	bl SaveFile_WriteToSram
 	ldr r1, _0800D8FC @ =gMain
 	movs r0, #3
 	strb r0, [r1, #3]
@@ -1772,7 +1772,7 @@ _0800DC88:
 	mov r2, sb
 	cmp r2, #1
 	ble _0800DC68
-	bl sub_52B30
+	bl SaveFile_WriteToSram
 	bl sub_2B4
 	bl m4aMPlayAllStop
 	bl sub_D10
@@ -1813,7 +1813,7 @@ sub_DCF0: @ 0x0800DCF0
 	movs r0, #0x65
 	bl m4aSongNumStart
 	bl sub_F6E0
-	bl sub_52B30
+	bl SaveFile_WriteToSram
 	bl sub_2B4
 	bl m4aMPlayAllStop
 	bl sub_D10
@@ -6025,7 +6025,7 @@ _0800FE8C:
 	bls _0800FE4C
 	bl sub_10528
 	bl sub_D74
-	bl sub_490
+	bl ClearGraphicsMemory
 	add sp, #4
 	pop {r3}
 	mov r8, r3
diff --git a/asm/intro.s b/asm/intro.s
index 1953b80..401f925 100755
--- a/asm/intro.s
+++ b/asm/intro.s
@@ -264,7 +264,7 @@ sub_9498: @ 0x08009498
 	mov r6, sb
 	mov r5, r8
 	push {r5, r6, r7}
-	bl sub_490
+	bl ClearGraphicsMemory
 	bl sub_518
 	bl sub_578
 	movs r2, #0x80
diff --git a/asm/options.s b/asm/options.s
index d2938b9..0ddc2e5 100755
--- a/asm/options.s
+++ b/asm/options.s
@@ -4,31 +4,6 @@
 
 	.text
 
-	thumb_func_start sub_51C60
-sub_51C60: @ 0x08051C60
-	push {lr}
-	ldr r1, _08051C90 @ =gMain+0x74
-	ldr r0, _08051C94 @ =gUnknown_02002920
-	adds r0, #0x2a
-	ldrb r0, [r0]
-	adds r1, #0xcd
-	strb r0, [r1]
-	bl sub_52B30
-	bl sub_2B4
-	bl m4aMPlayAllStop
-	bl sub_D10
-	ldr r1, _08051C98 @ =gAutoDisplayTitlescreenMenu
-	movs r0, #1
-	strb r0, [r1]
-	movs r0, #1
-	bl SetMainGameState
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08051C90: .4byte gMain+0x74
-_08051C94: .4byte gUnknown_02002920
-_08051C98: .4byte gAutoDisplayTitlescreenMenu
-
 	thumb_func_start sub_51C9C
 sub_51C9C: @ 0x08051C9C
 	push {r4, r5, r6, r7, lr}
diff --git a/asm/pokedex.s b/asm/pokedex.s
index 9980236..c0c5dea 100755
--- a/asm/pokedex.s
+++ b/asm/pokedex.s
@@ -1684,7 +1684,7 @@ _08004C2A:
 	adds r2, #1
 	cmp r2, #0xcc
 	ble _08004C2A
-	bl sub_52B30
+	bl SaveFile_WriteToSram
 	bl sub_2B4
 	bl m4aMPlayAllStop
 	bl sub_D10
@@ -1760,7 +1760,7 @@ _08004CC2:
 	movs r0, #1
 	mov r1, ip
 	strh r0, [r1]
-	bl sub_52B30
+	bl SaveFile_WriteToSram
 	bl sub_2B4
 	bl m4aMPlayAllStop
 	bl sub_D10
diff --git a/asm/rom_11B9C.s b/asm/rom_11B9C.s
index ca2c4c6..d5b362d 100755
--- a/asm/rom_11B9C.s
+++ b/asm/rom_11B9C.s
@@ -35770,7 +35770,7 @@ _08023B36:
 	movs r4, #0
 	ldrsh r0, [r0, r4]
 	movs r1, #1
-	bl sub_52BB0
+	bl SaveFile_SetPokedexFlags
 _08023B66:
 	ldr r5, _08023C94 @ =gUnknown_020314E0
 	ldr r0, [r5]
@@ -44250,7 +44250,7 @@ _08028040:
 	movs r2, #0
 	ldrsh r0, [r0, r2]
 	movs r1, #1
-	bl sub_52BB0
+	bl SaveFile_SetPokedexFlags
 _08028060:
 	ldr r0, _08028070 @ =gUnknown_020314E0
 	ldr r1, [r0]
@@ -60704,7 +60704,7 @@ _0803062E:
 	movs r2, #0
 	ldrsh r0, [r0, r2]
 	movs r1, #1
-	bl sub_52BB0
+	bl SaveFile_SetPokedexFlags
 _0803065E:
 	ldr r5, _08030784 @ =gUnknown_020314E0
 	ldr r0, [r5]
@@ -63561,7 +63561,7 @@ sub_31CF8: @ 0x08031CF8
 	movs r2, #0
 	ldrsh r0, [r0, r2]
 	movs r1, #4
-	bl sub_52BB0
+	bl SaveFile_SetPokedexFlags
 _08031D20:
 	ldr r2, _08031D88 @ =gUnknown_086A3700
 	ldr r1, _08031D84 @ =gUnknown_020314E0
@@ -63757,7 +63757,7 @@ _08031E7C:
 	beq _08031E94
 	movs r0, #0x2b
 	movs r1, #4
-	bl sub_52BB0
+	bl SaveFile_SetPokedexFlags
 _08031E94:
 	mov r2, r8
 	ldr r0, [r2]
@@ -63789,7 +63789,7 @@ _08031EB4:
 	movs r1, #0
 	ldrsh r0, [r0, r1]
 	movs r1, #4
-	bl sub_52BB0
+	bl SaveFile_SetPokedexFlags
 _08031ECE:
 	ldr r2, _08031F1C @ =gUnknown_086A3700
 	ldr r1, _08031F20 @ =gUnknown_020314E0
diff --git a/include/agb_sram.h b/include/agb_sram.h
index c609417..fe1ea85 100644
--- a/include/agb_sram.h
+++ b/include/agb_sram.h
@@ -1,10 +1,12 @@
 #ifndef GUARD_AGB_SRAM_H
 #define GUARD_AGB_SRAM_H
 
+#define SRAM 0x0E000000
+
 void SetSramFastFunc(void);
 void WriteSramFast(const u8 *src, u8 *dest, u32 size);
 extern void (*ReadSramFast)(const u8 *src, u8 *dest, u32 size);
 extern u32 (*VerifySramFast)(const u8 *src, u8 *dest, u32 size);
 u32 WriteAndVerifySramFast(const u8 *src, u8 *dest, u32 size);
 
-#endif  // GUARD_AGB_SRAM_H
\ No newline at end of file
+#endif  // GUARD_AGB_SRAM_H
diff --git a/include/functions.h b/include/functions.h
index 7d843c5..c84637b 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -73,7 +73,7 @@ void sub_24C(void);
 void sub_2B4(void);
 s16 LoadSpriteSets(const struct SpriteSet *const *spriteSets, u16 numSpriteSets, struct SpriteGroup *spriteGroups);
 void sub_438(void);
-void sub_490(void);
+void ClearGraphicsMemory(void);
 void sub_518(void);
 void sub_578(void);
 void sub_678(u8 *arg0, s16 arg1, s16 arg2);
@@ -776,10 +776,10 @@ extern void sub_1090C(void);
 //extern ? sub_5291C();
 //extern ? sub_52940();
 extern void sub_52A18(void);
-//extern ? sub_52A68();
-extern void sub_52B30(void);
-//extern ? sub_52BB0();
-extern void sub_52C44(void);
+//extern ? LoadSaveDataFromSram();
+extern void SaveFile_WriteToSram(void);
+//extern ? SaveFile_SetPokedexFlags();
+extern void SaveFile_ReadSavedGamePresent(void);
 extern void sub_52C64(void);
 
 // asm/rom_9BC.s
diff --git a/include/main.h b/include/main.h
index 6415742..873c4bb 100755
--- a/include/main.h
+++ b/include/main.h
@@ -14,7 +14,7 @@ struct SaveData
     /*0x144*/ //u8 filler144[0x2D8-0x144];
               u16 unk144[0x65][2];
     /*0x2D8*/ s8 signature[10];
-              u16 unk2E2;
+              u16 checksum;
               u32 unk2E4;
 };
 
@@ -68,7 +68,8 @@ struct Main
 
 
 extern struct Main gMain;
-extern struct SaveData gUnknown_0200B134;
+//extern struct SaveData gMain_saveData;
+#define gMain_saveData (*(struct SaveData *)(&gMain.saveData))
 extern struct SpriteGroup gUnknown_0200B3B8[];
 extern u32 IntrMain_Buffer[0x200];
 extern u32 IntrMain[];
@@ -98,7 +99,7 @@ extern struct OamData gOamBuffer[128];
 
 void sub_24C(void);
 void sub_2B4(void);
-void sub_490(void);
+void ClearGraphicsMemory(void);
 void sub_518(void);
 void sub_578(void);
 u32 Random(void);
diff --git a/include/variables.h b/include/variables.h
index a2112e1..0f9c113 100644
--- a/include/variables.h
+++ b/include/variables.h
@@ -3,6 +3,16 @@
 
 // Place all external variable declarations in this file
 
+extern struct ToneData gUnknown_08532D6C[];
+extern struct ToneData gUnknown_08533360[];
+extern struct ToneData gUnknown_08533960[];
+extern struct ToneData gUnknown_08533F60[];
+extern u16 gUnknown_08527D22[];
+extern u16 gUnknown_086BB910[][4];
+extern struct {u8 unk0; s16 unk2;} gUnknown_086BB9B4[];
+extern u16 gUnknown_08527D66[];
+extern u8 gUnknown_02031AF0[][10];
+extern u8 gUnknown_08527ED6[][10];
 extern void (*const gUnknown_08527F08[])(void);
 extern u16 gUnknown_0201A520[];
 extern u16 gUnknown_0201AD20[];
@@ -27,7 +37,6 @@ extern u8 gUnknown_02002808[];
 //extern ? gUnknown_02002958;
 //extern ? gIntrTable;
 //extern ? gMain;
-//extern ? gMain+0x74;
 //extern ? gUnknown_0200B3B8;
 //extern ? gUnknown_0200FB98;
 //extern ? gUnknown_0200FB9C;
diff --git a/src/gbplayer.c b/src/gbplayer.c
index e2c1cea..412be7d 100755
--- a/src/gbplayer.c
+++ b/src/gbplayer.c
@@ -291,7 +291,7 @@ void sub_1198(void)
 
 void sub_11B0(int arg0)
 {
-    if (gUnknown_0200B134.unk141)
+    if (gMain_saveData.unk141)
     {
         gUnknown_02019BF8 = arg0;
         gUnknown_02019BFC = 0;
diff --git a/src/options.c b/src/options.c
index ef31b58..e05d727 100644
--- a/src/options.c
+++ b/src/options.c
@@ -1,6 +1,7 @@
 #include "global.h"
 #include "m4a.h"
 #include "main.h"
+#include "titlescreen.h"
 
 struct OptionsData
 {
@@ -85,9 +86,6 @@ void sub_51240(void)
     gMain.subState++;
 }
 
-extern u8 gUnknown_02031AF0[][10];
-extern u8 gUnknown_08527ED6[][10];
-
 void sub_513B8(void)
 {
     int i;
@@ -99,7 +97,7 @@ void sub_513B8(void)
     gUnknown_02002920.unk6 = 1;
     gUnknown_02002920.unk8 = 0;
     gUnknown_02002920.unkA = 0;
-    gUnknown_02002920.unkC = gUnknown_0200B134.unk143;
+    gUnknown_02002920.unkC = gMain_saveData.unk143;
     gUnknown_02002920.unkE = 0;
     gUnknown_02002920.unk10 = 0;
     gUnknown_02002920.unk12 = 0;
@@ -124,13 +122,13 @@ void sub_513B8(void)
     sub_52528();
     if (gGameBoyPlayerEnabled == 1)
     {
-        gUnknown_02002920.unk2A = gUnknown_0200B134.unk141;
-        gUnknown_0200B134.unk141 = 1;
+        gUnknown_02002920.unk2A = gMain_saveData.unk141;
+        gMain_saveData.unk141 = 1;
     }
     else
     {
         gUnknown_02002920.unk2A = 0;
-        gUnknown_0200B134.unk141 = 0;
+        gMain_saveData.unk141 = 0;
     }
     gUnknown_02002920.unk2E = 0;
     gUnknown_02002920.unk2B = 0;
@@ -140,11 +138,6 @@ void sub_513B8(void)
     gUnknown_02002920.unk30 = 0;
 }
 
-extern u16 gUnknown_08527D22[];
-extern u16 gUnknown_086BB910[][4];
-extern struct {u8 unk0; s16 unk2;} gUnknown_086BB9B4[];
-extern u16 gUnknown_08527D66[];
-
 void sub_514B8(void)
 {
     s16 r4;
@@ -238,12 +231,12 @@ void sub_514B8(void)
             case 5:
                 m4aSongNumStart(0x65);
                 gUnknown_02002920.unkC = gUnknown_02002920.unkA - 2;
-                gUnknown_0200B134.unk143 = gUnknown_02002920.unkC; 
+                gMain_saveData.unk143 = gUnknown_02002920.unkC; 
                 break;
             case 6:
                 m4aSongNumStart(0x65);
                 gUnknown_02002920.unkC = gUnknown_02002920.unkA - 2;
-                gUnknown_0200B134.unk143 = gUnknown_02002920.unkC; 
+                gMain_saveData.unk143 = gUnknown_02002920.unkC; 
                 gUnknown_02002920.unkA = 7;
                 gUnknown_02002920.unk0 = 3;
                 break;
@@ -448,8 +441,8 @@ void sub_514B8(void)
             {
                 gUnknown_02031AF0[4][(gUnknown_02002920.unkA - 7) * 2 + 0] = gUnknown_02002920.unk24[0];
                 gUnknown_02031AF0[4][(gUnknown_02002920.unkA - 7) * 2 + 1] = gUnknown_02002920.unk24[1];
-                gUnknown_0200B134.unk144[(gUnknown_02002920.unkA - 7)][0] = gUnknown_086BB910[gUnknown_02002920.unk24[0]][0];
-                gUnknown_0200B134.unk144[(gUnknown_02002920.unkA - 7)][1] = gUnknown_086BB910[gUnknown_02002920.unk24[1]][0];
+                gMain_saveData.unk144[(gUnknown_02002920.unkA - 7)][0] = gUnknown_086BB910[gUnknown_02002920.unk24[0]][0];
+                gMain_saveData.unk144[(gUnknown_02002920.unkA - 7)][1] = gUnknown_086BB910[gUnknown_02002920.unk24[1]][0];
                 gUnknown_02002920.unk0 = 3;
                 gUnknown_02002920.unk1A[gUnknown_02002920.unkA - 7] = 0;
                 gUnknown_02002920.unk8 = 0;
@@ -499,3 +492,21 @@ void sub_51C3C(void)
         gMain.subState++;
     }
 }
+
+void sub_51C60(void)
+{
+    gMain_saveData.unk141 = gUnknown_02002920.unk2A;
+    SaveFile_WriteToSram();
+    sub_2B4();
+    m4aMPlayAllStop();
+    sub_D10();
+    gAutoDisplayTitlescreenMenu = 1;
+    SetMainGameState(1);
+}
+
+/*
+void sub_51C9C(void)
+{
+
+}
+*/
diff --git a/src/rom_528AC.c b/src/rom_528AC.c
index f1c7d5f..6f33318 100644
--- a/src/rom_528AC.c
+++ b/src/rom_528AC.c
@@ -5,6 +5,9 @@
 
 extern const u16 gUnknown_08527F18[];
 
+static void sub_52940(u16, s8, s8, u8, int);
+static u16 LoadSaveDataFromSram(void);
+
 #ifdef NONMATCHING
 // Like sub_C24, it matches except for that damn 'push {lr}/pop {lr}'
 int sub_528AC(u16 a)
@@ -46,8 +49,6 @@ _080528DA:\n\
 }
 #endif
 
-void sub_52940(u16, s8, s8, u8, int);
-
 void sub_528DC(u16 a, s8 b)
 {
     m4aMPlayVolumeControl(&gMPlayInfo_BGM, 0xFFFF, 0x99);
@@ -59,12 +60,7 @@ void sub_5291C(u16 a, s8 b, s8 c, u8 d)
     sub_52940(a, b, c, d, 0);
 }
 
-extern struct ToneData gUnknown_08532D6C[];
-extern struct ToneData gUnknown_08533360[];
-extern struct ToneData gUnknown_08533960[];
-extern struct ToneData gUnknown_08533F60[];
-
-void sub_52940(u16 a, s8 b, s8 c, u8 d, int unused)
+static void sub_52940(u16 a, s8 b, s8 c, u8 d, int unused)
 {
     u16 r5 = a - 1;
     u32 pitch = 0x3C00;
@@ -100,18 +96,15 @@ void sub_52940(u16 a, s8 b, s8 c, u8 d, int unused)
     }
 }
 
-extern u16 sub_52A68(void);
-extern void sub_525CC(s8);
-
 void sub_52A18(void)
 {
     SetSramFastFunc();
     gMain.unkC = 0;
-    if (sub_52A68() == 0)
+    if (LoadSaveDataFromSram() == 0)
     {
         sub_52C64();
-        sub_52B30();
-        if (sub_52A68() == 0)
+        SaveFile_WriteToSram();
+        if (LoadSaveDataFromSram() == 0)
         {
             gMain.unkC = 1;
             sub_52C64();
@@ -119,16 +112,15 @@ void sub_52A18(void)
     }
     else
     {
-        sub_525CC(gMain.saveData.unk143);
+        sub_525CC(gMain_saveData.unk143);
     }
 }
 
-extern struct Main2 gMain_;
 extern u8 gSaveFileSignature[];
 
-u16 sub_52A68(void)
+static u16 LoadSaveDataFromSram(void)
 {
-    u16 r8 = 0;
+    u16 isOk = FALSE;
     u16 fileNum;
     u16 i;
     u32 checksum;
@@ -136,15 +128,15 @@ u16 sub_52A68(void)
     // Looks like there are two copies of the save data, one used as a backup?
     for (fileNum = 0; fileNum < 2; fileNum++)
     {
-        u16 *saveData = (u16 *)&gMain.saveData;
-        u32 size = 0x274;
+        u16 *saveData = (u16 *)&gMain_saveData;
+        size_t size = sizeof(gMain_saveData);
 
-        ReadSramFast((u8 *)0x0E000004 + fileNum * 672, (u8 *)saveData, size);
+        ReadSramFast((void *)(SRAM + 0x4 + fileNum * 672), (u8 *)saveData, size);
 
         // Verify signature
         for (i = 0; i < 10; i++)
         {
-            if (gMain.saveData.signature[i] != gSaveFileSignature[i])
+            if (gMain_saveData.signature[i] != gSaveFileSignature[i])
                 break;
         }
         if (i != 10)
@@ -162,93 +154,82 @@ u16 sub_52A68(void)
         checksum = (checksum & 0xFFFF) + (checksum >> 16);
         if (checksum == 0xFFFF)
         {
-            r8 = 1;
+            isOk = TRUE;
             break;
         }
     }
-    return r8;
+    return isOk;
 }
 
-// I really think gUnknown_0200B134_ is part of gMain, but the code doesn't
-// match if I do that.
-#ifdef NONMATCHING
-#define gUnknown_0200B134_ gMain.saveData
-#else
-extern struct SaveData gUnknown_0200B134_;  // gMain.saveData
-asm(".set gUnknown_0200B134_, gMain+0x74");
-#endif
-
-void sub_52B30(void)
+void SaveFile_WriteToSram(void)
 {
     u32 checksum;
-    u16 *saveData = (u16 *)&gUnknown_0200B134_;
-    u32 size = 0x274;
+    u16 *saveData = (u16 *)&gMain_saveData;
+    size_t size = sizeof(gMain_saveData);
 
-    gUnknown_0200B134_.unk2E4++;
-    gUnknown_0200B134_.unk2E2 = 0;
+    gMain_saveData.unk2E4++;
+    gMain_saveData.checksum = 0;
 
     checksum = 0;
     while (size > 1)
     {
-	checksum += *saveData++;
-	size -= 2;
+        checksum += *saveData++;
+        size -= 2;
     }
     if (size != 0)  // never happens (size is even)
-	checksum += *saveData & 0xFF00;
+        checksum += *saveData & 0xFF00;
     checksum = (checksum & 0xFFFF) + (checksum >> 16);
-    gUnknown_0200B134_.unk2E2 = ~((checksum >> 16) + checksum);
+    gMain_saveData.checksum = ~((checksum >> 16) + checksum);
 
-    WriteAndVerifySramFast((u8 *)&gUnknown_0200B134_, (u8 *)0x0E000004, 0x274);
-    WriteAndVerifySramFast((u8 *)&gUnknown_0200B134_, (u8 *)0x0E0002A4, 0x274);
+    WriteAndVerifySramFast((u8 *)&gMain_saveData, (void *)(SRAM + 0x4),   sizeof(gMain_saveData));
+    WriteAndVerifySramFast((u8 *)&gMain_saveData, (void *)(SRAM + 0x2A4), sizeof(gMain_saveData));
 }
 
-void sub_52BB0(s16 a, u8 b)
+void SaveFile_SetPokedexFlags(s16 a, u8 b)
 {
-    u16 *saveData = (u16 *)&gUnknown_0200B134_;
-    u32 size = 0x274;
+    u16 *saveData = (u16 *)&gMain_saveData;
+    size_t size = sizeof(gMain_saveData);
     u32 checksum;
 
-    if (gUnknown_0200B134_.pokedexFlags[a] < b)
+    if (gMain_saveData.pokedexFlags[a] < b)
     {
-	u16 r1;
-
-	gUnknown_0200B134_.unk2E4++;
-	r1 = 0;
-	gUnknown_0200B134_.pokedexFlags[a] = b;
-	gUnknown_0200B134_.unk2E2 = r1;
-
-	checksum = 0;
-	while (size > 1)
-	{
-	    checksum += *saveData++;
-	    size -= 2;
-	}
-	if (size != 0)  // never happens (size is even)
-	    checksum += *saveData & 0xFF00;
-	checksum = (checksum & 0xFFFF) + (checksum >> 16);
-	gUnknown_0200B134_.unk2E2 = ~((checksum >> 16) + checksum);
-
-	WriteAndVerifySramFast((u8 *)&gUnknown_0200B134_, (u8 *)0x0E000004, 0x274);
-	WriteAndVerifySramFast((u8 *)&gUnknown_0200B134_, (u8 *)0x0E0002A4, 0x274);
+        gMain_saveData.unk2E4++;
+        gMain_saveData.pokedexFlags[a] = b;
+        gMain_saveData.checksum = 0;
+
+        checksum = 0;
+        while (size > 1)
+        {
+            checksum += *saveData++;
+            size -= 2;
+        }
+        if (size != 0)  // never happens (size is even)
+            checksum += *saveData & 0xFF00;
+        checksum = (checksum & 0xFFFF) + (checksum >> 16);
+        gMain_saveData.checksum = ~((checksum >> 16) + checksum);
+
+        WriteAndVerifySramFast((u8 *)&gMain_saveData, (void *)(SRAM + 0x4),   sizeof(gMain_saveData));
+        WriteAndVerifySramFast((u8 *)&gMain_saveData, (void *)(SRAM + 0x2A4), sizeof(gMain_saveData));
     }
 }
 
-void sub_52C44(void)
+void SaveFile_ReadSavedGamePresent(void)
 {
-    ReadSramFast((u8 *)0x0E000544, (u8 *)&gMain.hasSavedGame, sizeof(gMain.hasSavedGame));
+    ReadSramFast((void *)(SRAM + 0x544), (u8 *)&gMain.hasSavedGame, sizeof(gMain.hasSavedGame));
 }
 
 void sub_52C64(void)
 {
-    s16 r1;
+    s16 i;
+
+    for (i = 0; i < 10; i++)
+        gMain_saveData.signature[i] = gSaveFileSignature[i];
 
-    for (r1 = 0; r1 < 10; r1++)
-	gUnknown_0200B134_.signature[r1] = gSaveFileSignature[r1];
-    gUnknown_0200B134_.unk2E4 = 0;
-    gUnknown_0200B134_.unk141 = 0;
-    gUnknown_0200B134_.unk142 = 0;
+    gMain_saveData.unk2E4 = 0;
+    gMain_saveData.unk141 = 0;
+    gMain_saveData.unk142 = 0;
     sub_525CC(-1);
     sub_F6E0();
     sub_8ABC();
-    gUnknown_0200B134_.unk143 = 0;
+    gMain_saveData.unk143 = 0;
 }
diff --git a/src/titlescreen.c b/src/titlescreen.c
index 22bc699..8e19997 100755
--- a/src/titlescreen.c
+++ b/src/titlescreen.c
@@ -41,7 +41,7 @@ void LoadTitlescreenGraphics(void)
     DmaCopy16(3, gTitlescreenBg_Pals, (void *)BG_PLTT, BG_PLTT_SIZE);
     DmaCopy16(3, gTitlescreenBgTilemap, (void *)BG_SCREEN_ADDR(0), BG_SCREEN_SIZE);
 
-    sub_52C44();
+    SaveFile_ReadSavedGamePresent();
     if (gMain.hasSavedGame == TRUE)
     {
         DmaCopy16(3, gTitlescreenSprites_Pals, (void *)OBJ_PLTT, 0xA0);
@@ -862,7 +862,7 @@ void sub_11968(void)
 void sub_11B74(void)
 {
     sub_52C64();
-    sub_52B30();
+    SaveFile_WriteToSram();
     gMain.hasSavedGame = FALSE;
     WriteAndVerifySramFast((const u8 *)&gMain.hasSavedGame, (void *)0x0E000544, sizeof(gMain.hasSavedGame));
 }
diff --git a/src/util.c b/src/util.c
index d0f3f42..eab2e9e 100755
--- a/src/util.c
+++ b/src/util.c
@@ -96,7 +96,7 @@ void sub_438(void)
 {
     gMain.unk16 |= DISPCNT_FORCED_BLANK;
     REG_DISPCNT |= DISPCNT_FORCED_BLANK;
-    sub_490();
+    ClearGraphicsMemory();
     sub_518();
     sub_578();
     gMain.unkF = 0;
@@ -115,7 +115,7 @@ void sub_438(void)
     gMain.unk2C = 0;
 }
 
-void sub_490(void)
+void ClearGraphicsMemory(void)
 {
     DmaFill16(3, 0, (void *)VRAM, VRAM_SIZE);
     DmaFill32(3, 0, (void *)OAM, OAM_SIZE);
diff --git a/sym_ewram.txt b/sym_ewram.txt
index 22057c0..7221969 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -96,7 +96,6 @@ gMain: @ 0x200B0C0
 	.space 0x40
 gUnknown_0200B100: @ 0x0200B100
 	.space 0x34
-gUnknown_0200B134: @ 0x0200B134
 	.space 0x5A
 gUnknown_0200B18E: @ 0x0200B18E
 	.space 0x76