diff --git a/asm/code_08056418.s b/asm/code_08056418.s
index 45b6209b..2b845adf 100644
--- a/asm/code_08056418.s
+++ b/asm/code_08056418.s
@@ -6,311 +6,6 @@
 
 	.text
 
-
-	thumb_func_start sub_08056458
-sub_08056458: @ 0x08056458
-	push {r4, r5, lr}
-	ldr r0, _08056484 @ =gTextBox
-	ldrb r0, [r0]
-	cmp r0, #1
-	bne _08056470
-	ldr r0, _08056488 @ =gUnk_02022780
-	movs r1, #0xa8
-	bl _DmaZero
-	movs r0, #1
-	bl sub_080564C8
-_08056470:
-	ldr r2, _08056488 @ =gUnk_02022780
-	adds r1, r2, #0
-	adds r1, #0x8a
-	ldrb r0, [r1]
-	cmp r0, #0
-	beq _0805648C
-	subs r0, #1
-	strb r0, [r1]
-	b _080564A2
-	.align 2, 0
-_08056484: .4byte gTextBox
-_08056488: .4byte gUnk_02022780
-_0805648C:
-	ldr r5, _080564C0 @ =gUnk_08107BC8
-	adds r4, r2, #0
-	adds r4, #0x88
-_08056492:
-	ldrb r0, [r4]
-	lsls r0, r0, #2
-	adds r0, r0, r5
-	ldr r0, [r0]
-	bl _call_via_r0
-	cmp r0, #0
-	bne _08056492
-_080564A2:
-	ldr r0, _080564C4 @ =gUnk_02022780
-	adds r1, r0, #0
-	adds r1, #0x9d
-	ldrb r0, [r1]
-	cmp r0, #0
-	beq _080564B6
-	movs r0, #0
-	strb r0, [r1]
-	bl sub_08056F70
-_080564B6:
-	bl sub_08056C68
-	bl sub_08056D70
-	pop {r4, r5, pc}
-	.align 2, 0
-_080564C0: .4byte gUnk_08107BC8
-_080564C4: .4byte gUnk_02022780
-
-	thumb_func_start sub_080564C8
-sub_080564C8: @ 0x080564C8
-	ldr r1, _080564D8 @ =gUnk_02022780
-	adds r2, r1, #0
-	adds r2, #0x88
-	movs r3, #0
-	strb r0, [r2]
-	adds r1, #0x89
-	strb r3, [r1]
-	bx lr
-	.align 2, 0
-_080564D8: .4byte gUnk_02022780
-
-	thumb_func_start sub_080564DC
-sub_080564DC: @ 0x080564DC
-	ldr r0, _080564E8 @ =gUnk_02022780
-	adds r0, #0x99
-	movs r1, #0
-	strb r1, [r0]
-	movs r0, #0
-	bx lr
-	.align 2, 0
-_080564E8: .4byte gUnk_02022780
-
-	thumb_func_start sub_080564EC
-sub_080564EC: @ 0x080564EC
-	push {r4, lr}
-	ldr r0, _08056598 @ =gUnk_02036A40
-	movs r1, #8
-	bl _DmaZero
-	ldr r0, _0805659C @ =gUnk_02024030
-	movs r1, #0x18
-	bl _DmaZero
-	ldr r4, _080565A0 @ =gUnk_02022780
-	adds r0, r4, #0
-	movs r1, #0xa8
-	bl _DmaZero
-	ldr r0, _080565A4 @ =gTextBox
-	adds r1, r4, #0
-	movs r2, #0x20
-	bl _DmaCopy
-	ldrb r0, [r4, #2]
-	cmp r0, #0x63
-	bne _08056520
-	movs r0, #0x80
-	lsls r0, r0, #0x12
-	ldrb r0, [r0, #5]
-	strb r0, [r4, #2]
-_08056520:
-	adds r1, r4, #0
-	adds r1, #0x9c
-	movs r0, #0xff
-	strb r0, [r1]
-	adds r0, r4, #0
-	adds r0, #0x20
-	ldrh r1, [r4, #8]
-	bl sub_0805EEB4
-	adds r3, r4, #0
-	adds r3, #0x5c
-	movs r0, #2
-	strb r0, [r3]
-	movs r0, #0xe
-	strb r0, [r3, #1]
-	adds r3, #2
-	movs r2, #0
-	ldr r0, _080565A8 @ =gUnk_02002A40
-	adds r0, #0x80
-	ldrb r1, [r0]
-	cmp r1, #0
-	beq _08056560
-	adds r4, r0, #0
-_0805654E:
-	strb r1, [r3]
-	adds r3, #1
-	adds r2, #1
-	cmp r2, #5
-	bhi _08056560
-	adds r0, r2, r4
-	ldrb r1, [r0]
-	cmp r1, #0
-	bne _0805654E
-_08056560:
-	movs r0, #2
-	strb r0, [r3]
-	movs r0, #0xf
-	strb r0, [r3, #1]
-	movs r0, #0
-	strb r0, [r3, #2]
-	ldr r4, _080565A0 @ =gUnk_02022780
-	adds r0, r4, #0
-	bl sub_08056FBC
-	ldr r0, _080565AC @ =gUnk_08107BE0
-	str r0, [r4, #0x2c]
-	ldr r0, _080565B0 @ =gUnk_02000D00
-	str r0, [r4, #0x58]
-	adds r4, #0x54
-	movs r0, #0xd0
-	strh r0, [r4]
-	movs r0, #2
-	bl sub_08056C54
-	movs r0, #0
-	bl sub_08056BDC
-	movs r0, #2
-	bl sub_080564C8
-	movs r0, #1
-	pop {r4, pc}
-	.align 2, 0
-_08056598: .4byte gUnk_02036A40
-_0805659C: .4byte gUnk_02024030
-_080565A0: .4byte gUnk_02022780
-_080565A4: .4byte gTextBox
-_080565A8: .4byte gUnk_02002A40
-_080565AC: .4byte gUnk_08107BE0
-_080565B0: .4byte gUnk_02000D00
-
-	thumb_func_start sub_080565B4
-sub_080565B4: @ 0x080565B4
-	push {r4, lr}
-	ldr r4, _080565F4 @ =gUnk_02022780
-	adds r1, r4, #0
-	adds r1, #0x89
-	ldrb r0, [r1]
-	cmp r0, #0
-	bne _080565DA
-	movs r0, #1
-	strb r0, [r1]
-	adds r1, #0x10
-	strb r0, [r1]
-	ldrb r0, [r4, #3]
-	subs r1, #0x46
-	ldrb r1, [r1]
-	bl sub_08056F88
-	movs r0, #0x65
-	bl PlaySFX
-_080565DA:
-	movs r0, #1
-	bl sub_08056CC0
-	cmp r0, #0
-	beq _080565F0
-	adds r1, r4, #0
-	adds r1, #0x99
-	movs r0, #2
-	strb r0, [r1]
-	bl sub_080564C8
-_080565F0:
-	movs r0, #0
-	pop {r4, pc}
-	.align 2, 0
-_080565F4: .4byte gUnk_02022780
-
-	thumb_func_start sub_080565F8
-sub_080565F8: @ 0x080565F8
-	push {r4, lr}
-	ldr r4, _0805663C @ =gUnk_02022780
-	adds r1, r4, #0
-	adds r1, #0x89
-	ldrb r0, [r1]
-	cmp r0, #0
-	bne _0805661C
-	movs r0, #1
-	strb r0, [r1]
-	adds r1, #0x10
-	movs r0, #3
-	strb r0, [r1]
-	movs r0, #0
-	bl sub_08056BDC
-	movs r0, #0x66
-	bl PlaySFX
-_0805661C:
-	movs r0, #1
-	rsbs r0, r0, #0
-	bl sub_08056CC0
-	cmp r0, #0
-	beq _08056636
-	adds r1, r4, #0
-	adds r1, #0x99
-	movs r0, #0
-	strb r0, [r1]
-	movs r0, #2
-	bl sub_080564C8
-_08056636:
-	movs r0, #0
-	pop {r4, pc}
-	.align 2, 0
-_0805663C: .4byte gUnk_02022780
-
-	thumb_func_start sub_08056640
-sub_08056640: @ 0x08056640
-	push {lr}
-	movs r0, #0
-	bl sub_08056C54
-	movs r0, #0
-	bl sub_080564C8
-	movs r0, #0
-	pop {pc}
-	.align 2, 0
-
-	thumb_func_start sub_08056654
-sub_08056654: @ 0x08056654
-	push {lr}
-	movs r0, #4
-	bl sub_08056C54
-	ldr r2, _0805667C @ =gUnk_08107BF4
-	ldr r0, _08056680 @ =gUnk_02022780
-	adds r1, r0, #0
-	adds r1, #0x89
-	ldrb r1, [r1]
-	lsls r1, r1, #2
-	adds r1, r1, r2
-	ldr r1, [r1]
-	bl _call_via_r1
-	movs r0, #0
-	bl sub_08056CC0
-	movs r0, #0
-	pop {pc}
-	.align 2, 0
-_0805667C: .4byte gUnk_08107BF4
-_08056680: .4byte gUnk_02022780
-
-	thumb_func_start sub_08056684
-sub_08056684: @ 0x08056684
-	push {r4, lr}
-	adds r2, r0, #0
-	ldr r4, _080566AC @ =gUnk_02022780
-	adds r0, r4, #0
-	adds r0, #0x20
-	ldrb r1, [r0]
-	movs r3, #1
-	adds r0, r3, #0
-	ands r0, r1
-	cmp r0, #0
-	bne _080566B0
-	adds r0, r4, #0
-	adds r0, #0x99
-	ldrb r0, [r0]
-	cmp r0, #0
-	bne _080566B6
-	movs r0, #5
-	bl sub_080564C8
-	b _080566B6
-	.align 2, 0
-_080566AC: .4byte gUnk_02022780
-_080566B0:
-	adds r0, r2, #0
-	adds r0, #0x89
-	strb r3, [r0]
-_080566B6:
-	pop {r4, pc}
-
 	thumb_func_start sub_080566B8
 sub_080566B8: @ 0x080566B8
 	push {r4, r5, r6, r7, lr}
diff --git a/asm/non_matching/textbox/sub_080564EC.inc b/asm/non_matching/textbox/sub_080564EC.inc
new file mode 100644
index 00000000..8d0dc2ce
--- /dev/null
+++ b/asm/non_matching/textbox/sub_080564EC.inc
@@ -0,0 +1,90 @@
+    .syntax unified
+	push {r4, lr}
+	ldr r0, _08056598 @ =gUnk_02036A40
+	movs r1, #8
+	bl _DmaZero
+	ldr r0, _0805659C @ =gUnk_02024030
+	movs r1, #0x18
+	bl _DmaZero
+	ldr r4, _080565A0 @ =gUnk_02022780
+	adds r0, r4, #0
+	movs r1, #0xa8
+	bl _DmaZero
+	ldr r0, _080565A4 @ =gTextBox
+	adds r1, r4, #0
+	movs r2, #0x20
+	bl _DmaCopy
+	ldrb r0, [r4, #2]
+	cmp r0, #0x63
+	bne _08056520
+	movs r0, #0x80
+	lsls r0, r0, #0x12
+	ldrb r0, [r0, #5]
+	strb r0, [r4, #2]
+_08056520:
+	adds r1, r4, #0
+	adds r1, #0x9c
+	movs r0, #0xff
+	strb r0, [r1]
+	adds r0, r4, #0
+	adds r0, #0x20
+	ldrh r1, [r4, #8]
+	bl sub_0805EEB4
+	adds r3, r4, #0
+	adds r3, #0x5c
+	movs r0, #2
+	strb r0, [r3]
+	movs r0, #0xe
+	strb r0, [r3, #1]
+	adds r3, #2
+	movs r2, #0
+	ldr r0, _080565A8 @ =gUnk_02002A40
+	adds r0, #0x80
+	ldrb r1, [r0]
+	cmp r1, #0
+	beq _08056560
+	adds r4, r0, #0
+_0805654E:
+	strb r1, [r3]
+	adds r3, #1
+	adds r2, #1
+	cmp r2, #5
+	bhi _08056560
+	adds r0, r2, r4
+	ldrb r1, [r0]
+	cmp r1, #0
+	bne _0805654E
+_08056560:
+	movs r0, #2
+	strb r0, [r3]
+	movs r0, #0xf
+	strb r0, [r3, #1]
+	movs r0, #0
+	strb r0, [r3, #2]
+	ldr r4, _080565A0 @ =gUnk_02022780
+	adds r0, r4, #0
+	bl sub_08056FBC
+	ldr r0, _080565AC @ =gUnk_08107BE0
+	str r0, [r4, #0x2c]
+	ldr r0, _080565B0 @ =gUnk_02000D00
+	str r0, [r4, #0x58]
+	adds r4, #0x54
+	movs r0, #0xd0
+	strh r0, [r4]
+	movs r0, #2
+	bl sub_08056C54
+	movs r0, #0
+	bl sub_08056BDC
+	movs r0, #2
+	bl sub_080564C8
+	movs r0, #1
+	pop {r4, pc}
+	.align 2, 0
+_08056598: .4byte gUnk_02036A40
+_0805659C: .4byte gUnk_02024030
+_080565A0: .4byte gUnk_02022780
+_080565A4: .4byte gTextBox
+_080565A8: .4byte gUnk_02002A40
+_080565AC: .4byte gUnk_08107BE0
+_080565B0: .4byte gUnk_02000D00
+    .syntax divided
\ No newline at end of file
diff --git a/include/functions.h b/include/functions.h
index 9e66730c..e4a00199 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -46,6 +46,32 @@ extern u32 LoadFixedGFX(Entity*, u32);
 extern void ExecuteScriptCommandSet();
 extern void _DmaFill32(u32, void*, u32);
 extern Entity* CreateItemEntity(u32, u32, u32);
+void _DmaCopy(const void* src, void* dst, u32 size);
+extern u32 ProcessMovement(Entity*);
+extern Entity* FindEntityInListBySubtype(u32, u32, u32);
+extern Entity* FindEntityInListByForm(u32, u32, u32, u32, u32);
+extern void _DmaZero(void*, u32);
+extern void MenuFadeIn(u32, u32);
+extern void LoadAssetAsync(const void*, u32, u32);
+extern void LoadPaletteGroup(u32);
+extern void TryLoadPrologueHyruleTown(void);
+extern Manager* GetEmptyManager(void);
+extern void AppendEntityToList(void*, u32);
+extern void LoadGfxGroup(u32);
+extern void EnqueueSFX(u32);
+extern void ResetPlayer(void);
+extern void CreateDust(Entity*);
+extern u32 IsItemEquipped(u32);
+extern void DeleteManager(Manager*);
+extern bool32 CheckPlayerInRegion(u32 centerX, u32 centerY, u32 radiusX, u32 radiusY);
+extern u32 CheckIsDungeon();
+extern void HandleIntroScreen(void);
+extern void HandleChooseFileScreen(void);
+extern void HandleGameplayScreen(void);
+extern void HandleGameOverScreen(void);
+extern void HandleCreditsScreen(void);
+extern void HandleDebugTextScreen(void);
+extern u32 GetTileTypeByEntity(Entity*);
 
 // Unidentified
 extern u32 sub_0806ED78(Entity*);
@@ -53,7 +79,6 @@ extern void sub_0806920C(Entity*);
 extern u32 sub_0805ACC0(Entity*);
 extern u32 sub_0801E99C(Entity*);
 extern void sub_0806924C(Entity*);
-extern u32 ProcessMovement(Entity*);
 extern Entity* sub_080873AC(Entity*, u32, u32);
 extern void sub_08078778(Entity*);
 extern void sub_080787A8(Entity*, u32);
@@ -74,8 +99,6 @@ extern u32 sub_0806F5A4(u32);
 extern void sub_08078784(Entity*, u32);
 extern void sub_0807DD50(Entity*);
 extern void sub_0807DD94(Entity*, u32);
-extern Entity* FindEntityInListBySubtype(u32, u32, u32);
-extern Entity* FindEntityInListByForm(u32, u32, u32, u32, u32);
 extern s32 sub_0806ED9C(Entity*, u32, u32);
 extern void sub_0807000C(Entity*);
 extern void sub_0805E47C(Entity*);
@@ -105,7 +128,6 @@ extern Entity* sub_0804A98C(Entity*, u8, u8);
 extern u32 sub_080544DC(u32);
 extern void sub_08077E54(Entity*);
 extern void sub_080042BA(Entity*, u32);
-extern void _DmaZero(void*, u32);
 extern void sub_08077F24(ItemBehavior*, u32);
 extern void sub_08079184();
 extern void sub_08077F50(ItemBehavior* beh, u32 arg1);
@@ -118,7 +140,6 @@ extern void sub_080AD90C(void);
 extern void sub_080AD9B0(void);
 extern void sub_080AD918(void);
 extern void sub_0801E104(void);
-extern void MenuFadeIn(u32, u32);
 extern void sub_080A57F4(void);
 extern void sub_0804B29C(void*);
 extern void sub_08030118(u32);
@@ -139,8 +160,6 @@ extern void sub_0804C2F0(void);
 extern void sub_0801AFE4(void);
 extern u32 sub_08060354(void);
 extern void sub_08057E64(void);
-extern void LoadAssetAsync(const void*, u32, u32);
-extern void LoadPaletteGroup(u32);
 extern void sub_0809F814(u32);
 extern void sub_080300E8(void);
 extern void sub_0801DA90(u32);
@@ -157,7 +176,6 @@ extern void sub_080534AC();
 extern void sub_0807BA8C(u32, u32);
 extern void sub_0804D9B0();
 extern void sub_0807BB98(u32, u32, u32, u32);
-extern void TryLoadPrologueHyruleTown(void);
 extern void sub_0801D000(u32);
 extern void sub_08018C58(u32);
 extern void sub_0804E150(void);
@@ -170,7 +188,6 @@ extern void sub_080AF2E4(void);
 extern void sub_0805ADD8(u32);
 extern void sub_0804F578(void);
 extern void sub_08059994(void);
-extern void LoadGfxGroup(u32);
 extern s32 sub_0801CFA8(u32);
 extern void sub_080A3210(void);
 extern void sub_080ADA14(u32, u32);
@@ -193,15 +210,10 @@ extern void sub_08001242(Entity*);
 extern u32 sub_08003FC4(Entity*, u32);
 extern u32 sub_080043E8(Entity*);
 extern void sub_08001290(Entity*, u32);
-extern void EnqueueSFX(u32);
 extern void sub_08004596(Entity*, u32);
 extern u32 sub_080045B4(Entity*, u32, u32);
 extern u32 sub_0807953C(void);
-extern void ResetPlayer(void);
-extern void CreateDust(Entity*);
 extern void sub_080AE068(Entity*);
-extern Manager* GetEmptyManager(void);
-extern void AppendEntityToList(void*, u32);
 extern u32 sub_0800445C(Entity*);
 extern void sub_0807A108(void);
 extern void sub_0801766C(Entity*);
@@ -233,7 +245,6 @@ extern u32 sub_0808288C(Entity*, u32, u32, u32);
 extern void sub_0806FDA0(Entity*);
 extern void sub_080AE008(Entity*, u32, u32);
 extern u32 sub_08016A30(Entity*);
-extern u32 IsItemEquipped(u32);
 extern void sub_08077728();
 extern void sub_0807AEE4();
 extern u32 sub_08078EFC();
@@ -241,12 +252,6 @@ extern void sub_0807921C();
 extern void sub_0807A1B8();
 extern void sub_08079938();
 extern void sub_0807ACCC(Entity*);
-extern void HandleIntroScreen(void);
-extern void HandleChooseFileScreen(void);
-extern void HandleGameplayScreen(void);
-extern void HandleGameOverScreen(void);
-extern void HandleCreditsScreen(void);
-extern void HandleDebugTextScreen(void);
 extern void sub_080A2BE4(Entity*, u32);
 extern u32 sub_08097ADC(Entity*);
 extern void sub_08097B24(Entity*);
@@ -265,7 +270,6 @@ extern u32 sub_080040A8(Entity*);
 extern u32 sub_08017850(Entity*);
 extern void sub_080809D4(void);
 extern void sub_08080CB4(Entity*);
-extern u32 GetTileTypeByEntity(Entity*);
 extern u32 sub_0800442E(Entity*);
 extern void sub_08081404(Entity*, u32);
 extern void sub_0807B7D8(u32, u32, u32);
@@ -288,8 +292,6 @@ extern void sub_080A1D70(Entity*, u32);
 extern void sub_0806F62C(Entity*, u32, u32);
 extern u32 sub_08079F8C(void);
 extern void sub_080A1ED0(u32, u32, u32);
-extern void DeleteManager(Manager*);
-extern bool32 CheckPlayerInRegion(u32 centerX, u32 centerY, u32 radiusX, u32 radiusY);
 extern u32 sub_0806F5B0(u32);
 extern void sub_0801DFB4(Entity*, u32, u32, u32);
 extern void sub_0801E00C();
@@ -318,10 +320,19 @@ extern void sub_0807A108();
 extern u32 sub_08079FC4(u32);
 extern void sub_0800455E(Entity*);
 extern void sub_08008790(Entity*, u32);
-extern u32 CheckIsDungeon();
 extern void sub_0804ACF8();
 extern void sub_08073904(Entity*);
 extern u32 sub_08056134(void);
 extern u32 sub_0807CF30(void*);
 extern void sub_08004484(Entity*, Entity*);
+extern void sub_080564C8(u32);
+extern void sub_08056F70(void);
+extern void sub_08056C68(void);
+extern void sub_08056D70(void);
+extern void sub_0805EEB4(u8*, u32, u32);
+extern void sub_08056FBC(void*);
+extern void sub_08056C54(u32);
+extern void sub_08056BDC(u32);
+extern void sub_08056F88(u32, u32);
+extern u32 sub_08056CC0(u32);
 #endif
diff --git a/src/chooseFile.c b/src/chooseFile.c
index 682606af..e20247f1 100644
--- a/src/chooseFile.c
+++ b/src/chooseFile.c
@@ -47,7 +47,6 @@ static void sub_08050624(u32);
 static void sub_0805066C(void);
 static void sub_080507FC(void);
 
-extern void _DmaCopy(const void* src, void* dest, u32 size);
 extern void sub_08056FEC(u32, struct_020227E8*);
 extern void sub_0805F46C(u32, struct_080FC844*);
 extern void sub_0801C4A0(u32, u32);
diff --git a/src/main.c b/src/main.c
index ed058b61..fdb72796 100644
--- a/src/main.c
+++ b/src/main.c
@@ -12,7 +12,6 @@ extern void sub_0804FF84(u32);
 extern u16 gPaletteBuffer[];
 extern void VBlankInterruptWait(void);
 extern void DisableInterruptsAndDMA(void);
-extern void _DmaCopy(void*, u8*, int);
 extern void sub_08016B34(void);
 
 static void sub_08055F70(void);
diff --git a/src/textbox.c b/src/textbox.c
index 6237ffe5..ad3bc4d8 100644
--- a/src/textbox.c
+++ b/src/textbox.c
@@ -1,16 +1,57 @@
 #include "global.h"
 #include "room.h"
 #include "entity.h"
+#include "functions.h"
 #include "textbox.h"
 #include "structures.h"
 
-void _DmaZero();
 void ShowTextbox();
 void TextboxAtPosition();
 
-extern u32 gUnk_02022780;
+typedef struct {
+    u8 _0;
+    u8 _1;
+    u8 _2;
+    u8 _3[5];
+    u16 _8;
+    u8 _b[0x16];
+    u8 _20;
+    u8 _21;
+    u8 _22[0xa];
+    void* _2c;
+    u8 _30[0x23];
+    u8 _53;
+    u16 _54;
+    u8 _56[0x2];
+    void* _58;
+    u8 _5c;
+    u8 _5d;
+    u8 _5e[24];
+    u8 _76;
+    u8 _77[0x11];
+    u8 _88;
+    u8 _89;
+    u8 _8a;
+    u8 _8b[0xe];
+    u8 _99;
+    u8 _9a;
+    u8 _9b;
+    u8 _9c;
+    u8 _9d;
+    u8 _9e[0xa];
+} struct_02022780;
+extern struct_02022780 gUnk_02022780;
+static_assert(sizeof(struct_02022780) == 0xa8);
+
+extern const s32 (*const gUnk_08107BC8[])();
+extern const void (*const gUnk_08107BF4[])(struct_02022780*);
+
 extern u32 gUnk_02036A40;
 extern u32 gUnk_02036A38;
+extern u8 gUnk_02024030;
+extern u8 gUnk_020227A0;
+extern u8 gUnk_02000D00;
+extern u8 gUnk_08107BE0;
 
 s32 sub_08056338(void) {
     s32 result;
@@ -60,7 +101,7 @@ void TextboxAtPosition(u32 index, u32 x, u32 y) {
 }
 
 void ShowTextbox(u32 index, u32 param_2, u32* dest) {
-    _DmaZero(&gTextBox, 32, dest);
+    _DmaZero(&gTextBox, 32);
     gTextBox.textIndex = index;
     gTextBox.textSpeed = 99;
     gTextBox.textWindowWidth = 26;
@@ -77,3 +118,129 @@ void sub_08056418(void) {
     _DmaZero(&gUnk_02036A38, 8);
     _DmaZero(&gUnk_02000040, 4);
 }
+
+void sub_08056458(void) {
+    int iVar1;
+
+    if (gTextBox.doTextBox == 1) {
+        _DmaZero((u32*)&gUnk_02022780, sizeof(gUnk_02022780));
+        sub_080564C8(1);
+    }
+
+    if (gUnk_02022780._8a != 0) {
+        gUnk_02022780._8a--;
+    } else {
+        do {
+            iVar1 = gUnk_08107BC8[gUnk_02022780._88]();
+        } while (iVar1 != 0);
+    }
+    if (gUnk_02022780._9d != 0) {
+        gUnk_02022780._9d = 0;
+        sub_08056F70();
+    }
+    sub_08056C68();
+    sub_08056D70();
+}
+
+void sub_080564C8(u32 a1) {
+    gUnk_02022780._88 = a1;
+    gUnk_02022780._89 = 0;
+}
+
+u32 sub_080564DC(void) {
+    gUnk_02022780._99 = 0;
+    return 0;
+}
+
+// regalloc in loop
+NONMATCH("asm/non_matching/textbox/sub_080564EC.inc", u32 sub_080564EC(void)) {
+    u32 uVar1;
+    char* dest;
+    u32 i;
+    char c;
+    
+    _DmaZero((void *)&gUnk_02036A40, 8);
+    _DmaZero((void *)&gUnk_02024030, 0x18);
+    _DmaZero((void *)&gUnk_02022780, 0xa8);
+    _DmaCopy(&gTextBox, &gUnk_02022780, 32);
+    if (gUnk_02022780._2 == 0x63) {
+        gUnk_02022780._2 = gUnk_02000000->messageSpeed;
+    }
+    gUnk_02022780._9c = 0xff;
+    sub_0805EEB4(&gUnk_02022780._20, gUnk_02022780._8, 32);
+    gUnk_02022780._5c = 2;
+    gUnk_02022780._5d = 0xe;
+    dest = gUnk_02022780._5e;
+
+    for (i = 0; i < 6; ++i) {
+        c = gUnk_02002A40.playerName[i];
+        if (c == '\0') break;
+        dest[i] = c;
+    }
+
+    dest[0] = 2;
+    dest[1] = 15;
+    dest[2] = 0;
+    sub_08056FBC(&gUnk_02022780);
+    gUnk_02022780._2c = &gUnk_08107BE0;
+    gUnk_02022780._58 = &gUnk_02000D00;
+    gUnk_02022780._54 = 0xd0;
+    sub_08056C54(2);
+    sub_08056BDC(0);
+    sub_080564C8(2);
+    return 1;
+}
+END_NONMATCH
+
+u32 sub_080565B4(void) {
+    if (gUnk_02022780._89 == 0) {
+        gUnk_02022780._89 = 1;
+        gUnk_02022780._99 = 1;
+        sub_08056F88(gUnk_02022780._3[0], gUnk_02022780._53);
+        PlaySFX(0x65);
+    }
+
+    if (sub_08056CC0(1)) {
+        gUnk_02022780._99 = 2;
+        sub_080564C8(2);
+    }
+    return 0;
+}
+
+u32 sub_080565F8(void) {
+    if (gUnk_02022780._89 == 0) {
+        gUnk_02022780._89 = 1;
+        gUnk_02022780._99 = 3;
+        sub_08056BDC(0);
+        PlaySFX(0x66);
+    }
+
+    if (sub_08056CC0(-1)) {
+        gUnk_02022780._99 = 0;
+        sub_080564C8(2);
+    }
+    return 0;
+}
+
+u32 sub_08056640() {
+    sub_08056C54(0);
+    sub_080564C8(0);
+    return 0;
+}
+
+u32 sub_08056654(void) {
+    sub_08056C54(4);
+    gUnk_08107BF4[gUnk_02022780._89](&gUnk_02022780);
+    sub_08056CC0(0);
+    return 0;
+}
+
+void sub_08056684(struct_02022780* this) {
+    if ((gUnk_02022780._20 & 1) == 0) {
+        if (gUnk_02022780._99 == '\0') {
+            sub_080564C8(5);
+        }
+    } else {
+        this->_89 = 1;
+    }
+}
diff --git a/src/tmc.code-workspace b/src/tmc.code-workspace
index 6ed05aa3..788922bd 100644
--- a/src/tmc.code-workspace
+++ b/src/tmc.code-workspace
@@ -3,7 +3,9 @@
         "files.associations" : {
             "algorithm": "cpp",
             "ios": "c",
-            "functions.h": "c"
+            "functions.h": "c",
+            "textbox.h": "c",
+            "structures.h": "c"
         }
     }
 }