cleanup

4 files changed, 163 insertions, 165 deletions

diff --git a/data/rom.s b/data/rom.s
index 557f716..b8a476b 100755
--- a/data/rom.s
+++ b/data/rom.s
@@ -699,7 +699,7 @@ gUnknown_0805C8E0:: @ 0x0805C8E0
 gUnknown_0805C8F6:: @ 0x0805C8F6
 	.incbin "baserom.gba", 0x5C8F6, 0x1C9CA
 
-gUnknown_080792C0:: @ 0x080792C0
+gFieldSelectStateFuncs:: @ 0x080792C0
 	.incbin "baserom.gba", 0x792C0, 0xC
 
 gUnknown_080792CC:: @ 0x080792CC
diff --git a/include/variables.h b/include/variables.h
index 0f9c113..c1137b8 100644
--- a/include/variables.h
+++ b/include/variables.h
@@ -3,6 +3,8 @@
 
 // Place all external variable declarations in this file
 
+extern struct {u16 unk0[5]; u16 unkA[5];} gUnknown_086A6B14;
+extern s8 gUnknown_02002850;
 extern struct ToneData gUnknown_08532D6C[];
 extern struct ToneData gUnknown_08533360[];
 extern struct ToneData gUnknown_08533960[];
@@ -126,15 +128,19 @@ extern const s16 gEReaderAccessButtonSequence[];
 //extern ? gMonHatchSpriteGroup3_Gfx;
 //extern ? gMonHatchSpriteGroup4_Gfx;
 //extern ? gMonHatchSpriteGroup5_Gfx;
-//extern ? gFieldSelectWindow_Gfx;
+extern struct Coord16 gUnknown_086A6B28[];
+extern const struct SpriteSet *const gUnknown_086A6AD4[];
+extern void (*gFieldSelectStateFuncs[])(void);
+extern u8 gUnknown_080A2400[];
+extern u8 gFieldSelectWindow_Gfx[];
 //extern ? gUnknown_080A4000;
-//extern ? gFieldSelectFrameShadowTilemap;
-//extern ? gFieldSelectMiniFields_Gfx;
+extern u8 gFieldSelectFrameShadowTilemap[];
+extern u8 gFieldSelectMiniFields_Gfx[];
 //extern ? gUnknown_080A8020;
-//extern ? gFieldSelectWindowTilemap;
-//extern ? gFieldSelectBGPals;
-//extern ? gFieldSelectSpritePals;
-//extern ? gFieldSelectSpriteGfx;
+extern u8 gFieldSelectWindowTilemap[];
+extern u16 gFieldSelectBGPals[];
+extern u16 gFieldSelectSpritePals[];
+extern u8 gFieldSelectSpriteGfx[];
 extern const u8 gTitlescreenBgTilemap[];
 extern const u16 gTitlescreenBg_Pals[];
 extern const u8 gTitlescreenBg_Gfx[];
diff --git a/src/field_select.c b/src/field_select.c
index 381e047..40bfb2a 100644
--- a/src/field_select.c
+++ b/src/field_select.c
@@ -3,20 +3,14 @@
 #include "m4a.h"
 #include "titlescreen.h"
 
-extern void (*gUnknown_080792C0[])(void);
-
-extern u16 gFieldSelectBGPals[];
-extern u8 gFieldSelectWindow_Gfx[];
-extern u8 gFieldSelectMiniFields_Gfx[];
-extern u8 gUnknown_080A2400[];
-extern u8 gFieldSelectFrameShadowTilemap[];
-extern u8 gFieldSelectWindowTilemap[];
-extern u16 gFieldSelectSpritePals[];
-extern u8 gFieldSelectSpriteGfx[];
-extern s8 gUnknown_02002850;
+enum
+{
+    FIELD_RUBY,
+    FIELD_SAPPHIRE,
+};
 
-extern void sub_8F94(void);
-extern void sub_8C38(void);
+static void sub_8F94(void);
+static void sub_8C38(void);
 
 struct FieldSelectData
 {
@@ -24,34 +18,37 @@ struct FieldSelectData
     u16 unk2;
     u16 unk4;
     u16 unk6;
-    u16 unk8;
-    u16 unkA;
+    u16 selectedField;
+    u16 state;
     s16 unkC;
     s16 unkE;
-    u8 unk10;
+    u8 ballSpeed;
     s16 unk12;
     s8 unk14;
     u16 unk16;
 };
 
-extern struct FieldSelectData gUnknown_02002838;
+extern struct FieldSelectData gFieldSelectData;
 
 void FieldSelectMain(void)
 {
-    gUnknown_080792C0[gMain.subState]();
+    gFieldSelectStateFuncs[gMain.subState]();
 }
 
 void LoadFieldSelectGraphics(void)
 {
     sub_438();
 
-    REG_DISPCNT = 0x1080;
-    REG_BG0CNT = 4;
-    REG_DISPCNT |= 0x100;
-    REG_BG1CNT = 0x105;
-    REG_DISPCNT |= 0x200;
-    REG_BG2CNT = 0x20A;
-    REG_DISPCNT |= 0x400;
+    REG_DISPCNT = DISPCNT_MODE_0 | DISPCNT_FORCED_BLANK | DISPCNT_OBJ_ON;
+
+    REG_BG0CNT = BGCNT_CHARBASE(1) | BGCNT_SCREENBASE(0) | BGCNT_PRIORITY(0) | BGCNT_TXT256x256;
+    REG_DISPCNT |= DISPCNT_BG0_ON;
+
+    REG_BG1CNT = BGCNT_CHARBASE(1) | BGCNT_SCREENBASE(1) | BGCNT_PRIORITY(1) | BGCNT_TXT256x256;
+    REG_DISPCNT |= DISPCNT_BG1_ON;
+
+    REG_BG2CNT = BGCNT_CHARBASE(2) | BGCNT_SCREENBASE(2) | BGCNT_PRIORITY(2) | BGCNT_TXT256x256;
+    REG_DISPCNT |= DISPCNT_BG2_ON;
 
     gMain.unk16 = REG_DISPCNT;
 
@@ -71,106 +68,104 @@ void LoadFieldSelectGraphics(void)
     m4aSongNumStart(3);
 }
 
-void sub_8C38(void)
+static void sub_8C38(void)
 {
-    gUnknown_02002838.unk0 = 2;
-    gUnknown_02002838.unk2 = 3;
-    gUnknown_02002838.unk4 = 0;
-    gUnknown_02002838.unk6 = 1;
-    gUnknown_02002838.unk8 = 0;
-    gUnknown_02002838.unkA = 0;
-    gUnknown_02002838.unkC = 0;
-    gUnknown_02002838.unkE = 0;
-    gUnknown_02002838.unk16 = 0;
-    gUnknown_02002838.unk12 = 0;
-    gUnknown_02002838.unk14 = 0;
+    gFieldSelectData.unk0 = 2;
+    gFieldSelectData.unk2 = 3;
+    gFieldSelectData.unk4 = 0;
+    gFieldSelectData.unk6 = 1;
+    gFieldSelectData.selectedField = FIELD_RUBY;
+    gFieldSelectData.state = 0;
+    gFieldSelectData.unkC = 0;
+    gFieldSelectData.unkE = 0;
+    gFieldSelectData.unk16 = 0;
+    gFieldSelectData.unk12 = 0;
+    gFieldSelectData.unk14 = 0;
 
-    gUnknown_02002838.unk10 = gMain_saveData.unk142;
+    gFieldSelectData.ballSpeed = gMain_saveData.unk142;
     gMain.unk4 = 0;
     gUnknown_02002850 = 0;
 }
 
-extern struct {u16 unk0[5]; u16 unkA[5];} gUnknown_086A6B14;
-
 void sub_8C7C(void)
 {
     sub_8F94();
-    if ((gMain.heldKeys & 0xF) == 0xF)
+    if ((gMain.heldKeys & (A_BUTTON | B_BUTTON | SELECT_BUTTON | START_BUTTON)) == (A_BUTTON | B_BUTTON | SELECT_BUTTON | START_BUTTON))
     {
         gUnknown_02002850 = 1;
-        gUnknown_02002838.unk16 = 0;
+        gFieldSelectData.unk16 = 0;
         gMain.subState++;
     }
     if (gUnknown_02002850 == 0)
     {
-        switch (gUnknown_02002838.unkA)
+        switch (gFieldSelectData.state)
         {
         case 0:
-            if (gMain.newKeys & 0x20)
+            if (gMain.newKeys & DPAD_LEFT)
             {
-                if (gUnknown_02002838.unk8 == 1)
+                if (gFieldSelectData.selectedField == FIELD_SAPPHIRE)
                 {
                     m4aSongNumStart(0x6D);
-                    gUnknown_02002838.unk8 = 0;
-                    gUnknown_02002838.unk4 = 0;
-                    gUnknown_02002838.unk6 = 1;
-                    gUnknown_02002838.unkA = 1;
+                    gFieldSelectData.selectedField = FIELD_RUBY;
+                    gFieldSelectData.unk4 = 0;
+                    gFieldSelectData.unk6 = 1;
+                    gFieldSelectData.state = 1;
                 }
             }
-            else if (gMain.newKeys & 0x10)
+            else if (gMain.newKeys & DPAD_RIGHT)
             {
-                if (gUnknown_02002838.unk8 == 0)
+                if (gFieldSelectData.selectedField == FIELD_RUBY)
                 {
                     m4aSongNumStart(0x6D);
-                    gUnknown_02002838.unk8 = 1;
-                    gUnknown_02002838.unk4 = 1;
-                    gUnknown_02002838.unk6 = 0;
-                    gUnknown_02002838.unkA = 1;
+                    gFieldSelectData.selectedField = FIELD_SAPPHIRE;
+                    gFieldSelectData.unk4 = 1;
+                    gFieldSelectData.unk6 = 0;
+                    gFieldSelectData.state = 1;
                 }
             }
-            if (gMain.newKeys & 1)
+            if (gMain.newKeys & A_BUTTON)
             {
                 m4aSongNumStart(0x65);
-                gUnknown_02002838.unkA = 2;
-                gUnknown_02002838.unk14 = 1;
-                gUnknown_02002838.unkE = 0;
-                if (gUnknown_02002838.unk8 == 0)
+                gFieldSelectData.state = 2;
+                gFieldSelectData.unk14 = 1;
+                gFieldSelectData.unkE = 0;
+                if (gFieldSelectData.selectedField == FIELD_RUBY)
                 {
-                    gUnknown_02002838.unk4 = 0;
-                    gUnknown_02002838.unk6 = 1;
-                    gUnknown_02002838.unk0 = 2;
-                    gUnknown_02002838.unk2 = 3;
-                    gUnknown_02002838.unkC = 0;
+                    gFieldSelectData.unk4 = 0;
+                    gFieldSelectData.unk6 = 1;
+                    gFieldSelectData.unk0 = 2;
+                    gFieldSelectData.unk2 = 3;
+                    gFieldSelectData.unkC = 0;
                 }
                 else
                 {
-                    gUnknown_02002838.unk4 = 1;
-                    gUnknown_02002838.unk6 = 0;
-                    gUnknown_02002838.unk0 = 7;
-                    gUnknown_02002838.unk2 = 11;
-                    gUnknown_02002838.unkC = 0;
+                    gFieldSelectData.unk4 = 1;
+                    gFieldSelectData.unk6 = 0;
+                    gFieldSelectData.unk0 = 7;
+                    gFieldSelectData.unk2 = 11;
+                    gFieldSelectData.unkC = 0;
                 }
             }
-            if (gMain.newKeys & 2)
+            if (gMain.newKeys & B_BUTTON)
             {
                 m4aSongNumStart(0x66);
                 gMain.subState++;
-                gUnknown_02002838.unk16 = 1;
-                if (gUnknown_02002838.unk8 == 0)
+                gFieldSelectData.unk16 = 1;
+                if (gFieldSelectData.selectedField == FIELD_RUBY)
                 {
-                    gUnknown_02002838.unk4 = 0;
-                    gUnknown_02002838.unk6 = 1;
-                    gUnknown_02002838.unk0 = 2;
-                    gUnknown_02002838.unk2 = 3;
-                    gUnknown_02002838.unkC = 0;
+                    gFieldSelectData.unk4 = 0;
+                    gFieldSelectData.unk6 = 1;
+                    gFieldSelectData.unk0 = 2;
+                    gFieldSelectData.unk2 = 3;
+                    gFieldSelectData.unkC = 0;
                 }
                 else
                 {
-                    gUnknown_02002838.unk4 = 1;
-                    gUnknown_02002838.unk6 = 0;
-                    gUnknown_02002838.unk0 = 7;
-                    gUnknown_02002838.unk2 = 11;
-                    gUnknown_02002838.unkC = 0;
+                    gFieldSelectData.unk4 = 1;
+                    gFieldSelectData.unk6 = 0;
+                    gFieldSelectData.unk0 = 7;
+                    gFieldSelectData.unk2 = 11;
+                    gFieldSelectData.unkC = 0;
                 }
             }
             if (gMain.unk4 < 2)
@@ -178,106 +173,106 @@ void sub_8C7C(void)
             else
                 gMain.unk6 = 1;
             break;
-        case 2:
-            if (gMain.newKeys & 0x30)
+        case 2:  // Choose ball speed
+            if (gMain.newKeys & (DPAD_LEFT | DPAD_RIGHT))
             {
                 m4aSongNumStart(0x67);
-                gUnknown_02002838.unk10 = 1 - gUnknown_02002838.unk10;
+                gFieldSelectData.ballSpeed = 1 - gFieldSelectData.ballSpeed;
             }
-            if (gMain.newKeys & 1)
+            if (gMain.newKeys & A_BUTTON)
             {
                 m4aSongNumStart(0x65);
-                gUnknown_02002838.unkE = 0;
-                gUnknown_02002838.unkC = 0;
-                gMain_saveData.unk142 = gUnknown_02002838.unk10;
+                gFieldSelectData.unkE = 0;
+                gFieldSelectData.unkC = 0;
+                gMain_saveData.unk142 = gFieldSelectData.ballSpeed;
                 SaveFile_WriteToSram();
-                gUnknown_02002838.unkA = 3;
+                gFieldSelectData.state = 3;
             }
-            if (gMain.newKeys & 2)
+            if (gMain.newKeys & B_BUTTON)
             {
                 m4aSongNumStart(0x66);
-                gUnknown_02002838.unk14 = 0;
-                gUnknown_02002838.unkA = 0;
+                gFieldSelectData.unk14 = 0;
+                gFieldSelectData.state = 0;
             }
-            gUnknown_02002838.unkE++;
-            if (gUnknown_02002838.unkE > 4)
+            gFieldSelectData.unkE++;
+            if (gFieldSelectData.unkE > 4)
             {
-                gUnknown_02002838.unkE = 0;
-                gUnknown_02002838.unk12 = 1 - gUnknown_02002838.unk12;
+                gFieldSelectData.unkE = 0;
+                gFieldSelectData.unk12 = 1 - gFieldSelectData.unk12;
             }
             break;
         case 1:
-            if (gUnknown_02002838.unk8 == 0)
+            if (gFieldSelectData.selectedField == FIELD_RUBY)
             {
-                gUnknown_02002838.unk0 = gUnknown_086A6B14.unk0[4 - gUnknown_02002838.unkC];
-                gUnknown_02002838.unk2 = gUnknown_086A6B14.unkA[4 - gUnknown_02002838.unkC];
+                gFieldSelectData.unk0 = gUnknown_086A6B14.unk0[4 - gFieldSelectData.unkC];
+                gFieldSelectData.unk2 = gUnknown_086A6B14.unkA[4 - gFieldSelectData.unkC];
             }
             else
             {
-                gUnknown_02002838.unk0 = gUnknown_086A6B14.unk0[gUnknown_02002838.unkC];
-                gUnknown_02002838.unk2 = gUnknown_086A6B14.unkA[gUnknown_02002838.unkC];
+                gFieldSelectData.unk0 = gUnknown_086A6B14.unk0[gFieldSelectData.unkC];
+                gFieldSelectData.unk2 = gUnknown_086A6B14.unkA[gFieldSelectData.unkC];
             }
             if (!(gMain.unk4C & 1))
             {
-                if (gUnknown_02002838.unkC < 4)
+                if (gFieldSelectData.unkC < 4)
                 {
-                    gUnknown_02002838.unkC++;
+                    gFieldSelectData.unkC++;
                 }
                 else
                 {
-                    gUnknown_02002838.unkC = 0;
-                    gUnknown_02002838.unkA = 0;
+                    gFieldSelectData.unkC = 0;
+                    gFieldSelectData.state = 0;
                 }
             }
-            if (gMain.newKeys & 0x20)
+            if (gMain.newKeys & DPAD_LEFT)
             {
-                if (gUnknown_02002838.unk8 == 1)
+                if (gFieldSelectData.selectedField == FIELD_SAPPHIRE)
                 {
                     m4aSongNumStart(0x6D);
-                    gUnknown_02002838.unk8 = 0;
-                    gUnknown_02002838.unk4 = 0;
-                    gUnknown_02002838.unk6 = 1;
-                    gUnknown_02002838.unk0 = 2;
-                    gUnknown_02002838.unk2 = 3;
-                    gUnknown_02002838.unkC = 0;
-                    gUnknown_02002838.unkA = 0;
+                    gFieldSelectData.selectedField = FIELD_RUBY;
+                    gFieldSelectData.unk4 = 0;
+                    gFieldSelectData.unk6 = 1;
+                    gFieldSelectData.unk0 = 2;
+                    gFieldSelectData.unk2 = 3;
+                    gFieldSelectData.unkC = 0;
+                    gFieldSelectData.state = 0;
                 }
             }
-            else if (gMain.newKeys & 0x10)
+            else if (gMain.newKeys & DPAD_RIGHT)
             {
-                if (gUnknown_02002838.unk8 == 0)
+                if (gFieldSelectData.selectedField == FIELD_RUBY)
                 {
                     m4aSongNumStart(0x6D);
-                    gUnknown_02002838.unk8 = 1;
-                    gUnknown_02002838.unk4 = 1;
-                    gUnknown_02002838.unk6 = 0;
-                    gUnknown_02002838.unk0 = 7;
-                    gUnknown_02002838.unk2 = 11;
-                    gUnknown_02002838.unkC = 0;
-                    gUnknown_02002838.unkA = 0;
+                    gFieldSelectData.selectedField = FIELD_SAPPHIRE;
+                    gFieldSelectData.unk4 = 1;
+                    gFieldSelectData.unk6 = 0;
+                    gFieldSelectData.unk0 = 7;
+                    gFieldSelectData.unk2 = 11;
+                    gFieldSelectData.unkC = 0;
+                    gFieldSelectData.state = 0;
                 }
             }
             break;
         case 3:
-            gUnknown_02002838.unkE++;
-            if (gUnknown_02002838.unkE > 3)
+            gFieldSelectData.unkE++;
+            if (gFieldSelectData.unkE > 3)
             {
-                gUnknown_02002838.unkE = 0;
-                if (gUnknown_02002838.unk8 == 0)
-                    gUnknown_02002838.unk4 = 1 - gUnknown_02002838.unk4;
+                gFieldSelectData.unkE = 0;
+                if (gFieldSelectData.selectedField == FIELD_RUBY)
+                    gFieldSelectData.unk4 = 1 - gFieldSelectData.unk4;
                 else
-                    gUnknown_02002838.unk6 = 1 - gUnknown_02002838.unk6;
-                gUnknown_02002838.unkC++;
-                if (gUnknown_02002838.unkC > 5)
+                    gFieldSelectData.unk6 = 1 - gFieldSelectData.unk6;
+                gFieldSelectData.unkC++;
+                if (gFieldSelectData.unkC > 5)
                 {
-                    gUnknown_02002838.unk16 = 2;
+                    gFieldSelectData.unk16 = 2;
                     gMain.subState++;
                 }
             }
             break;
         }
-        gMain.unk4 = gUnknown_02002838.unk8;
-        gMain.unk5 = gUnknown_02002838.unk8;
+        gMain.unk4 = gFieldSelectData.selectedField;
+        gMain.unk5 = gFieldSelectData.selectedField;
     }
 }
 
@@ -286,14 +281,11 @@ void sub_8F64(void)
     sub_FE04(sub_8F94);
     m4aMPlayAllStop();
     sub_D10();
-    gAutoDisplayTitlescreenMenu = 1;
-    SetMainGameState(gUnknown_02002838.unk16);
+    gAutoDisplayTitlescreenMenu = TRUE;
+    SetMainGameState(gFieldSelectData.unk16);
 }
 
-extern const struct SpriteSet *const gUnknown_086A6AD4[];
-extern struct Coord16 gUnknown_086A6B28[];
-
-void sub_8F94(void)
+static void sub_8F94(void)
 {
     struct SpriteGroup *r6;
     struct SpriteGroup *r9;
@@ -303,26 +295,26 @@ void sub_8F94(void)
     const struct SpriteSet *spriteSet;
     int i;
 
-    gMain.blendControl = 0x642;
-    gMain.blendAlpha = 0x808;
+    gMain.blendControl = BLDCNT_EFFECT_BLEND | BLDCNT_TGT1_BG1 | BLDCNT_TGT2_BG1 | BLDCNT_TGT2_BG2;
+    gMain.blendAlpha = BLDALPHA_BLEND(8, 8);
     REG_BLDCNT = gMain.blendControl;
     REG_BLDALPHA = gMain.blendAlpha;
 
     r6 = &gMain.spriteGroups[0];
     r9 = &gMain.spriteGroups[1];
-    sp0 = &gMain.spriteGroups[gUnknown_02002838.unk0];
-    r10 = &gMain.spriteGroups[gUnknown_02002838.unk2];
-    r8 = &gMain.spriteGroups[12 + gUnknown_02002838.unk10 * 2 + gUnknown_02002838.unk12];
+    sp0 = &gMain.spriteGroups[gFieldSelectData.unk0];
+    r10 = &gMain.spriteGroups[gFieldSelectData.unk2];
+    r8 = &gMain.spriteGroups[12 + gFieldSelectData.ballSpeed * 2 + gFieldSelectData.unk12];
 
-    r6->available = gUnknown_02002838.unk4;
-    r9->available = gUnknown_02002838.unk6;
+    r6->available = gFieldSelectData.unk4;
+    r9->available = gFieldSelectData.unk6;
     sp0->available = 1;
     r10->available = 1;
-    r8->available = gUnknown_02002838.unk14;
+    r8->available = gFieldSelectData.unk14;
 
     LoadSpriteSets(gUnknown_086A6AD4, 16, r6);
 
-    if (gUnknown_02002838.unk4 == 1)
+    if (gFieldSelectData.unk4 == 1)
     {
         r6->baseX = 0x25;
         r6->baseY = 0x18;
@@ -333,7 +325,7 @@ void sub_8F94(void)
         }
     }
 
-    if (gUnknown_02002838.unk6 == 1)
+    if (gFieldSelectData.unk6 == 1)
     {
         r9->baseX = 0x8D;
         r9->baseY = 0x18;
@@ -346,7 +338,7 @@ void sub_8F94(void)
 
     sp0->baseX = 32;
     sp0->baseY = 32;
-    spriteSet = gUnknown_086A6AD4[gUnknown_02002838.unk0];
+    spriteSet = gUnknown_086A6AD4[gFieldSelectData.unk0];
     for (i = 0; i < spriteSet->count; i++)
     {
         gOamBuffer[sp0->oam[i].oamId].objMode = 1;
@@ -356,7 +348,7 @@ void sub_8F94(void)
 
     r10->baseX = 0x88;
     r10->baseY = 32;
-    spriteSet = gUnknown_086A6AD4[gUnknown_02002838.unk2];
+    spriteSet = gUnknown_086A6AD4[gFieldSelectData.unk2];
     for (i = 0; i < spriteSet->count; i++)
     {
         gOamBuffer[r10->oam[i].oamId].objMode = 1;
@@ -366,8 +358,8 @@ void sub_8F94(void)
 
     if (r8->available == 1)
     {
-        r8->baseX = gUnknown_086A6B28[gUnknown_02002838.unk8].x;
-        r8->baseY = gUnknown_086A6B28[gUnknown_02002838.unk8].y;
+        r8->baseX = gUnknown_086A6B28[gFieldSelectData.selectedField].x;
+        r8->baseY = gUnknown_086A6B28[gFieldSelectData.selectedField].y;
         for (i = 0; i < 5; i++)
         {
             gOamBuffer[r8->oam[i].oamId].objMode = 0;
diff --git a/sym_ewram.txt b/sym_ewram.txt
index aa1a5a7..f89b3d5 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -38,7 +38,7 @@ gUnknown_02002830: @ 0x02002830
 	.space 0x1
 gUnknown_02002831: @ 0x02002831
 	.space 0x7
-gUnknown_02002838: @ 0x02002838
+gFieldSelectData: @ 0x02002838
 	.space 0x18
 gUnknown_02002850: @ 0x02002850
 	.space 0x8