sub_8009D90

asm/link.s

@@ -5,173 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_8009D90
-sub_8009D90: @ 8009D90
-	push {lr}
-	lsls r0, 16
-	lsrs r2, r0, 16
-	ldr r0, =0x00006666
-	cmp r2, r0
-	beq _08009E60
-	cmp r2, r0
-	bgt _08009DF0
-	ldr r0, =0x00004444
-	cmp r2, r0
-	beq _08009E4C
-	cmp r2, r0
-	bgt _08009DCC
-	ldr r0, =0x00002222
-	cmp r2, r0
-	beq _08009E38
-	ldr r0, =0x00002ffe
-_08009DB2:
-	cmp r2, r0
-	bne _08009DB8
-	b _08009EE4
-_08009DB8:
-	b _08009F06
-	.pool
-_08009DCC:
-	ldr r0, =0x00005566
-	cmp r2, r0
-	bne _08009DD4
-	b _08009EE4
-_08009DD4:
-	cmp r2, r0
-	bgt _08009DE0
-	subs r0, 0x11
-	b _08009DB2
-	.pool
-_08009DE0:
-	ldr r0, =0x00005fff
-	cmp r2, r0
-	bne _08009DE8
-	b _08009ED0
-_08009DE8:
-	b _08009F06
-	.pool
-_08009DF0:
-	ldr r0, =0x0000aaab
-	cmp r2, r0
-	beq _08009EA8
-	cmp r2, r0
-	bgt _08009E10
-	ldr r0, =0x00007777
-	cmp r2, r0
-	beq _08009E6C
-	ldr r0, =0x0000aaaa
-	b _08009DB2
-	.pool
-_08009E10:
-	ldr r0, =0x0000cafe
-	cmp r2, r0
-	beq _08009EF0
-	cmp r2, r0
-	bgt _08009E2C
-	ldr r0, =0x0000bbbb
-	cmp r2, r0
-	beq _08009E8C
-	b _08009F06
-	.pool
-_08009E2C:
-	ldr r0, =0x0000cccc
-	cmp r2, r0
-	beq _08009EBC
-	b _08009F06
-	.pool
-_08009E38:
-	ldr r0, =gUnknown_03003110
-	strh r2, [r0]
-	ldr r1, =gUnknown_020229C6
-	ldrh r1, [r1]
-	b _08009F04
-	.pool
-_08009E4C:
-	ldr r0, =gUnknown_03003110
-	strh r2, [r0]
-	ldr r1, =gMain
-	ldrh r1, [r1, 0x2C]
-	b _08009F04
-	.pool
-_08009E60:
-	ldr r0, =gUnknown_03003110
-	movs r1, 0
-	b _08009F02
-	.pool
-_08009E6C:
-	ldr r0, =gUnknown_03003110
-	strh r2, [r0]
-	movs r1, 0
-	adds r3, r0, 0
-	movs r2, 0xEE
-_08009E76:
-	adds r1, 0x1
-	lsls r0, r1, 1
-	adds r0, r3
-	strh r2, [r0]
-	lsls r1, 24
-	lsrs r1, 24
-	cmp r1, 0x4
-	bls _08009E76
-	b _08009F06
-	.pool
-_08009E8C:
-	ldr r1, =gUnknown_03003110
-	strh r2, [r1]
-	ldr r2, =gUnknown_03000D10
-	ldrh r0, [r2, 0x2]
-	strh r0, [r1, 0x2]
-	ldrb r0, [r2, 0x9]
-	adds r0, 0x80
-	strh r0, [r1, 0x4]
-	b _08009F06
-	.pool
-_08009EA8:
-	ldr r0, =gUnknown_03003110
-	strh r2, [r0]
-	ldr r1, =gScriptItemId
-	ldrh r1, [r1]
-	b _08009F04
-	.pool
-_08009EBC:
-	ldr r0, =gUnknown_03003110
-	strh r2, [r0]
-	ldr r1, =gUnknown_03003150
-	ldrb r1, [r1]
-	b _08009F04
-	.pool
-_08009ED0:
-	ldr r0, =gUnknown_03003110
-	strh r2, [r0]
-	ldr r1, =gUnknown_030030F4
-	ldrh r1, [r1]
-	b _08009F04
-	.pool
-_08009EE4:
-	ldr r0, =gUnknown_03003110
-	strh r2, [r0]
-	b _08009F06
-	.pool
-_08009EF0:
-	ldr r0, =gUnknown_03005DA8
-	ldrh r1, [r0]
-	cmp r1, 0
-	beq _08009F06
-	ldr r0, =gUnknown_030022B4
-	ldrb r0, [r0]
-	cmp r0, 0
-	bne _08009F06
-	ldr r0, =gUnknown_03003110
-_08009F02:
-	strh r2, [r0]
-_08009F04:
-	strh r1, [r0, 0x2]
-_08009F06:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_8009D90
-
 	thumb_func_start sub_8009F18
 sub_8009F18: @ 8009F18
 	push {lr}

include/item_menu.h

@@ -5,6 +5,8 @@
 
 // Exported RAM declarations
 
+extern u16 gScriptItemId;
+
 // Exported ROM declarations
 void sub_81AAC50(void);
 void sub_81AAC70(void);

include/main.h

@@ -46,7 +46,7 @@ extern const u8 gGameVersion;
 extern const u8 gGameLanguage;
 
 extern u16 gKeyRepeatStartDelay;
-extern u8 gUnknown_030022B4;
+extern bool8 gUnknown_030022B4;
 extern struct Main gMain;
 extern u16 gKeyRepeatContinueDelay;
 extern bool8 gSoftResetDisabled;

include/overworld.h

@@ -51,6 +51,7 @@ void Overworld_ChangeMusicToDefault(void);
 void Overworld_ChangeMusicTo(u16);
 
 bool32 is_c1_link_related_active(void);
+extern u16 gUnknown_03005DA8;
 
 void strange_npc_table_clear(void);
 const struct MapHeader *get_mapheader_by_bank_and_number(u8, u8);

src/link.c

@@ -8,6 +8,8 @@
 #include "decompress.h"
 #include "string_util.h"
 #include "event_data.h"
+#include "item_menu.h"
+#include "overworld.h"
 #include "gpu_regs.h"
 #include "palette.h"
 #include "task.h"
@@ -572,3 +574,70 @@ static void sub_8009AA0(u8 unused)
         }
     }
 }
+
+void sub_8009D90(u16 command)
+{
+    switch (command)
+    {
+        case 0x2222:
+            gUnknown_03003110[0] = 0x2222;
+            gUnknown_03003110[1] = gUnknown_020229C6;
+            break;
+        case 0x2ffe:
+            gUnknown_03003110[0] = 0x2ffe;
+            break;
+        case 0x4444:
+            gUnknown_03003110[0] = 0x4444;
+            gUnknown_03003110[1] = gMain.heldKeys;
+            break;
+        case 0x5555:
+            gUnknown_03003110[0] = 0x5555;
+            break;
+        case 0x6666:
+            gUnknown_03003110[0] = 0x6666;
+            gUnknown_03003110[1] = 0;
+            break;
+        case 0x7777:
+        {
+            u8 i;
+
+            gUnknown_03003110[0] = 0x7777;
+            for (i = 0; i < 5; i ++)
+            {
+                gUnknown_03003110[i + 1] = 0xEE;
+            }
+            break;
+        }
+        case 0xbbbb:
+            gUnknown_03003110[0] = 0xbbbb;
+            gUnknown_03003110[1] = gUnknown_03000D10.size;
+            gUnknown_03003110[2] = gUnknown_03000D10.multiplayerId + 0x80;
+            break;
+        case 0xaaaa:
+            gUnknown_03003110[0] = 0xaaaa;
+            break;
+        case 0xaaab:
+            gUnknown_03003110[0] = 0xaaab;
+            gUnknown_03003110[1] = gScriptItemId;
+            break;
+        case 0xcccc:
+            gUnknown_03003110[0] = 0xcccc;
+            gUnknown_03003110[1] = gUnknown_03003150;
+            break;
+        case 0x5fff:
+            gUnknown_03003110[0] = 0x5fff;
+            gUnknown_03003110[1] = gUnknown_030030F4;
+            break;
+        case 0x5566:
+            gUnknown_03003110[0] = 0x5566;
+            break;
+        case 0xcafe:
+            if (gUnknown_03005DA8 == 0 || gUnknown_030022B4)
+            {
+                break;
+            }
+            gUnknown_03003110[0] = 0xcafe;
+            gUnknown_03003110[1] = gUnknown_03005DA8;
+            break;
+    }
+}

src/main.c

@@ -80,7 +80,7 @@ const IntrFunc gIntrTableTemplate[] =
 static u16 gUnknown_03000000;
 
 u16 gKeyRepeatStartDelay;
-u8 gUnknown_030022B4;
+bool8 gUnknown_030022B4;
 struct Main gMain;
 u16 gKeyRepeatContinueDelay;
 bool8 gSoftResetDisabled;
@@ -129,7 +129,7 @@ void AgbMain()
     if (gFlashMemoryPresent != TRUE)
         SetMainCallback2(NULL);
 
-    gUnknown_030022B4 = 0;
+    gUnknown_030022B4 = FALSE;
     gUnknown_03000000 = 0xFC0;
 
     for (;;)
@@ -147,22 +147,22 @@ void AgbMain()
 
         if (sub_8087634() == 1)
         {
-            gUnknown_030022B4 = 1;
+            gUnknown_030022B4 = TRUE;
             UpdateLinkAndCallCallbacks();
-            gUnknown_030022B4 = 0;
+            gUnknown_030022B4 = FALSE;
         }
         else
         {
-            gUnknown_030022B4 = 0;
+            gUnknown_030022B4 = FALSE;
             UpdateLinkAndCallCallbacks();
 
             if (sub_80875C8() == 1)
             {
                 gMain.newKeys = 0;
                 ClearSpriteCopyRequests();
-                gUnknown_030022B4 = 1;
+                gUnknown_030022B4 = TRUE;
                 UpdateLinkAndCallCallbacks();
-                gUnknown_030022B4 = 0;
+                gUnknown_030022B4 = FALSE;
             }
         }