main menu through sub_800C780

6 files changed, 239 insertions, 564 deletions

diff --git a/asm/main_menu.s b/asm/main_menu.s
index 76c9f8838..3b33c4f69 100644
--- a/asm/main_menu.s
+++ b/asm/main_menu.s
@@ -5,563 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_800C2D4
-sub_800C2D4: @ 800C2D4
-	push {lr}
-	bl RunTasks
-	bl AnimateSprites
-	bl BuildOamBuffer
-	bl UpdatePaletteFade
-	pop {r0}
-	bx r0
-	thumb_func_end sub_800C2D4
-
-	thumb_func_start sub_800C2EC
-sub_800C2EC: @ 800C2EC
-	push {lr}
-	bl LoadOam
-	bl ProcessSpriteCopyRequests
-	bl TransferPlttBuffer
-	pop {r0}
-	bx r0
-	thumb_func_end sub_800C2EC
-
-	thumb_func_start sub_800C300
-sub_800C300: @ 800C300
-	push {lr}
-	movs r0, 0x1
-	bl sub_800C318
-	pop {r0}
-	bx r0
-	thumb_func_end sub_800C300
-
-	thumb_func_start sub_800C30C
-sub_800C30C: @ 800C30C
-	push {lr}
-	movs r0, 0x1
-	bl sub_800C318
-	pop {r0}
-	bx r0
-	thumb_func_end sub_800C30C
-
-	thumb_func_start sub_800C318
-sub_800C318: @ 800C318
-	push {r4,r5,lr}
-	sub sp, 0x8
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	movs r0, 0
-	bl SetVBlankCallback
-	movs r0, 0
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0xC
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0xA
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x8
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x18
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x1A
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x14
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x16
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x10
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x12
-	movs r1, 0
-	bl SetGpuReg
-	mov r1, sp
-	movs r0, 0
-	strh r0, [r1]
-	ldr r1, _0800C4A0 @ =0x040000d4
-	mov r0, sp
-	str r0, [r1]
-	movs r0, 0xC0
-	lsls r0, 19
-	str r0, [r1, 0x4]
-	ldr r0, _0800C4A4 @ =0x8100c000
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	movs r5, 0
-	str r5, [sp, 0x4]
-	add r0, sp, 0x4
-	str r0, [r1]
-	movs r0, 0xE0
-	lsls r0, 19
-	str r0, [r1, 0x4]
-	ldr r0, _0800C4A8 @ =0x85000100
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	mov r0, sp
-	strh r5, [r0]
-	str r0, [r1]
-	ldr r0, _0800C4AC @ =0x05000002
-	str r0, [r1, 0x4]
-	ldr r0, _0800C4B0 @ =0x810001ff
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	bl ScanlineEffect_Stop
-	bl ResetTasks
-	bl ResetSpriteData
-	bl FreeAllSpritePalettes
-	bl ResetPaletteFade
-	movs r0, 0
-	bl ResetBgsAndClearDma3BusyFlags
-	ldr r1, _0800C4B4 @ =gUnknown_8234690
-	movs r0, 0
-	movs r2, 0x1
-	bl InitBgsFromTemplates
-	movs r0, 0
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgX
-	movs r0, 0
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgY
-	movs r0, 0x1
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgX
-	movs r0, 0x1
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgY
-	movs r0, 0x2
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgX
-	movs r0, 0x2
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgY
-	ldr r0, _0800C4B8 @ =gUnknown_8234618
-	bl InitWindows
-	bl DeactivateAllTextPrinters
-	ldr r0, _0800C4BC @ =gUnknown_8234648
-	movs r1, 0
-	movs r2, 0x20
-	bl LoadPalette
-	ldr r0, _0800C4C0 @ =gUnknown_8234668
-	movs r1, 0xF0
-	movs r2, 0x20
-	bl LoadPalette
-	movs r0, 0x40
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x44
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x48
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x4A
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x50
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x52
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x54
-	movs r1, 0
-	bl SetGpuReg
-	ldr r0, _0800C4C4 @ =sub_800C2D4
-	bl SetMainCallback2
-	movs r1, 0xC1
-	lsls r1, 6
-	movs r0, 0
-	bl SetGpuReg
-	ldr r0, _0800C4C8 @ =sub_800C4D0
-	movs r1, 0
-	bl CreateTask
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _0800C4CC @ =gTasks
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	adds r1, r2
-	strh r5, [r1, 0xA]
-	strh r4, [r1, 0x18]
-	movs r0, 0
-	add sp, 0x8
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	.align 2, 0
-_0800C4A0: .4byte 0x040000d4
-_0800C4A4: .4byte 0x8100c000
-_0800C4A8: .4byte 0x85000100
-_0800C4AC: .4byte 0x05000002
-_0800C4B0: .4byte 0x810001ff
-_0800C4B4: .4byte gUnknown_8234690
-_0800C4B8: .4byte gUnknown_8234618
-_0800C4BC: .4byte gUnknown_8234648
-_0800C4C0: .4byte gUnknown_8234668
-_0800C4C4: .4byte sub_800C2D4
-_0800C4C8: .4byte sub_800C4D0
-_0800C4CC: .4byte gTasks
-	thumb_func_end sub_800C318
-
-	thumb_func_start sub_800C4D0
-sub_800C4D0: @ 800C4D0
-	push {r4-r6,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	ldr r0, _0800C538 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	lsls r0, 24
-	lsrs r6, r0, 24
-	cmp r6, 0
-	beq _0800C4E8
-	b _0800C626
-_0800C4E8:
-	movs r0, 0x40
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x44
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x48
-	movs r1, 0x1
-	bl SetGpuReg
-	movs r0, 0x4A
-	movs r1, 0x21
-	bl SetGpuReg
-	movs r0, 0x50
-	movs r1, 0xFF
-	bl SetGpuReg
-	movs r0, 0x52
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x54
-	movs r1, 0x7
-	bl SetGpuReg
-	ldr r0, _0800C53C @ =gSaveFileStatus
-	ldrh r4, [r0]
-	cmp r4, 0x2
-	beq _0800C58C
-	cmp r4, 0x2
-	bgt _0800C540
-	cmp r4, 0
-	beq _0800C5E8
-	cmp r4, 0x1
-	beq _0800C54A
-	b _0800C5E8
-	.align 2, 0
-_0800C538: .4byte gPaletteFade
-_0800C53C: .4byte gSaveFileStatus
-_0800C540:
-	cmp r4, 0x4
-	beq _0800C60C
-	cmp r4, 0xFF
-	beq _0800C5B0
-	b _0800C5E8
-_0800C54A:
-	movs r0, 0
-	bl sub_800D044
-	bl sub_806E2BC
-	cmp r0, 0x1
-	bne _0800C570
-	ldr r2, _0800C56C @ =gTasks
-	lsls r3, r5, 2
-	adds r0, r3, r5
-	lsls r0, 3
-	adds r0, r2
-	movs r1, 0x2
-	strh r1, [r0, 0x8]
-	adds r1, r2, 0
-	adds r2, r3, 0
-	b _0800C57E
-	.align 2, 0
-_0800C56C: .4byte gTasks
-_0800C570:
-	ldr r0, _0800C588 @ =gTasks
-	lsls r2, r5, 2
-	adds r1, r2, r5
-	lsls r1, 3
-	adds r1, r0
-	strh r4, [r1, 0x8]
-	adds r1, r0, 0
-_0800C57E:
-	adds r0, r2, r5
-	lsls r0, 3
-	adds r0, r1
-	b _0800C5FC
-	.align 2, 0
-_0800C588: .4byte gTasks
-_0800C58C:
-	movs r0, 0
-	bl sub_800D094
-	ldr r0, _0800C5A8 @ =gTasks
-	lsls r1, r5, 2
-	adds r1, r5
-	lsls r1, 3
-	adds r1, r0
-	strh r6, [r1, 0x8]
-	ldr r1, _0800C5AC @ =gUnknown_8415C42
-	adds r0, r5, 0
-	bl sub_800C634
-	b _0800C626
-	.align 2, 0
-_0800C5A8: .4byte gTasks
-_0800C5AC: .4byte gUnknown_8415C42
-_0800C5B0:
-	movs r0, 0
-	bl sub_800D094
-	ldr r1, _0800C5DC @ =gTasks
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	adds r4, r0, r1
-	movs r6, 0x1
-	strh r6, [r4, 0x8]
-	ldr r1, _0800C5E0 @ =gUnknown_8415BFF
-	adds r0, r5, 0
-	bl sub_800C634
-	bl sub_806E2BC
-	cmp r0, 0x1
-	bne _0800C5E4
-	movs r0, 0x2
-	strh r0, [r4, 0x8]
-	b _0800C626
-	.align 2, 0
-_0800C5DC: .4byte gTasks
-_0800C5E0: .4byte gUnknown_8415BFF
-_0800C5E4:
-	strh r6, [r4, 0x8]
-	b _0800C626
-_0800C5E8:
-	movs r0, 0
-	bl sub_800D044
-	ldr r1, _0800C604 @ =gTasks
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	adds r0, r1
-	movs r1, 0
-	strh r1, [r0, 0x8]
-_0800C5FC:
-	ldr r1, _0800C608 @ =sub_800C704
-	str r1, [r0]
-	b _0800C626
-	.align 2, 0
-_0800C604: .4byte gTasks
-_0800C608: .4byte sub_800C704
-_0800C60C:
-	movs r0, 0
-	bl sub_800D094
-	ldr r0, _0800C62C @ =gTasks
-	lsls r1, r5, 2
-	adds r1, r5
-	lsls r1, 3
-	adds r1, r0
-	strh r6, [r1, 0x8]
-	ldr r1, _0800C630 @ =gUnknown_8415C64
-	adds r0, r5, 0
-	bl sub_800C634
-_0800C626:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0800C62C: .4byte gTasks
-_0800C630: .4byte gUnknown_8415C64
-	thumb_func_end sub_800C4D0
-
-	thumb_func_start sub_800C634
-sub_800C634: @ 800C634
-	push {r4,lr}
-	sub sp, 0x4
-	adds r4, r0, 0
-	adds r0, r1, 0
-	lsls r4, 24
-	lsrs r4, 24
-	bl sub_800CDF8
-	ldr r1, _0800C678 @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r0, r1
-	ldr r1, _0800C67C @ =sub_800C688
-	str r1, [r0]
-	movs r0, 0x1
-	negs r0, r0
-	ldr r1, _0800C680 @ =0x0000ffff
-	str r1, [sp]
-	movs r1, 0
-	movs r2, 0x10
-	movs r3, 0
-	bl BeginNormalPaletteFade
-	movs r0, 0
-	bl ShowBg
-	ldr r0, _0800C684 @ =sub_800C2EC
-	bl SetVBlankCallback
-	add sp, 0x4
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0800C678: .4byte gTasks
-_0800C67C: .4byte sub_800C688
-_0800C680: .4byte 0x0000ffff
-_0800C684: .4byte sub_800C2EC
-	thumb_func_end sub_800C634
-
-	thumb_func_start sub_800C688
-sub_800C688: @ 800C688
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _0800C6E0 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _0800C6F8
-	bl RunTextPrinters
-	movs r0, 0x4
-	bl IsTextPrinterActive
-	lsls r0, 16
-	cmp r0, 0
-	bne _0800C6F8
-	ldr r0, _0800C6E4 @ =gMain
-	ldrh r1, [r0, 0x2E]
-	movs r0, 0x1
-	ands r0, r1
-	cmp r0, 0
-	beq _0800C6F8
-	movs r0, 0x4
-	bl ClearWindowTilemap
-	ldr r0, _0800C6E8 @ =gUnknown_8234638
-	bl sub_800D1E8
-	movs r0, 0
-	bl sub_800D044
-	ldr r1, _0800C6EC @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r1, r0, r1
-	movs r2, 0x8
-	ldrsh r0, [r1, r2]
-	cmp r0, 0
-	bne _0800C6F4
-	ldr r0, _0800C6F0 @ =sub_800C704
-	b _0800C6F6
-	.align 2, 0
-_0800C6E0: .4byte gPaletteFade
-_0800C6E4: .4byte gMain
-_0800C6E8: .4byte gUnknown_8234638
-_0800C6EC: .4byte gTasks
-_0800C6F0: .4byte sub_800C704
-_0800C6F4:
-	ldr r0, _0800C700 @ =sub_800C7A0
-_0800C6F6:
-	str r0, [r1]
-_0800C6F8:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0800C700: .4byte sub_800C7A0
-	thumb_func_end sub_800C688
-
-	thumb_func_start sub_800C704
-sub_800C704: @ 800C704
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _0800C764 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _0800C774
-	movs r0, 0x40
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x44
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x48
-	movs r1, 0x1
-	bl SetGpuReg
-	movs r0, 0x4A
-	movs r1, 0x21
-	bl SetGpuReg
-	movs r0, 0x50
-	movs r1, 0xFF
-	bl SetGpuReg
-	movs r0, 0x52
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x54
-	movs r1, 0x7
-	bl SetGpuReg
-	ldr r0, _0800C768 @ =gTasks
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	adds r1, r0
-	movs r2, 0x8
-	ldrsh r0, [r1, r2]
-	cmp r0, 0
-	bne _0800C770
-	ldr r0, _0800C76C @ =sub_800CA94
-	b _0800C772
-	.align 2, 0
-_0800C764: .4byte gPaletteFade
-_0800C768: .4byte gTasks
-_0800C76C: .4byte sub_800CA94
-_0800C770:
-	ldr r0, _0800C77C @ =sub_800C780
-_0800C772:
-	str r0, [r1]
-_0800C774:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0800C77C: .4byte sub_800C780
-	thumb_func_end sub_800C704
-
-	thumb_func_start sub_800C780
-sub_800C780: @ 800C780
-	push {lr}
-	lsls r0, 24
-	lsrs r2, r0, 24
-	ldr r0, _0800C79C @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _0800C798
-	adds r0, r2, 0
-	bl sub_800C7A0
-_0800C798:
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0800C79C: .4byte gPaletteFade
-	thumb_func_end sub_800C780
-
 	thumb_func_start sub_800C7A0
 sub_800C7A0: @ 800C7A0
 	push {r4-r7,lr}
diff --git a/data/data.s b/data/data.s
index d0bd198e1..da50d9086 100644
--- a/data/data.s
+++ b/data/data.s
@@ -15,13 +15,22 @@ gUnknown_8234615::
 
 	.align 2, 0
 gUnknown_8234618:: @ 8234618
-	.incbin "baserom.gba", 0x234618, 0x8
+	.byte 0x00, 0x03, 0x01, 0x18, 0x02, 0x0f
+	.2byte 0x0001
 
 gUnknown_8234620:: @ 8234620
-	.incbin "baserom.gba", 0x234620, 0x18
+	.byte 0x00, 0x03, 0x01, 0x18, 0x0a, 0x0f
+	.2byte 0x0001
+	.byte 0x00, 0x03, 0x0d, 0x18, 0x02, 0x0f
+	.2byte 0x00f1
+	.byte 0x00, 0x03, 0x11, 0x18, 0x02, 0x0f
+	.2byte 0x0121
 
 gUnknown_8234638:: @ 8234638
-	.incbin "baserom.gba", 0x234638, 0x10
+	.byte 0x00, 0x03, 0x0f, 0x18, 0x04, 0x0f
+	.2byte 0x0001
+	.byte 0xff, 0x00, 0x00, 0x00, 0x00, 0x00
+	.2byte 0x0000
 
 gUnknown_8234648:: @ 8234648
 	.incbin "baserom.gba", 0x234648, 0x20
diff --git a/data/strings.s b/data/strings.s
index be47054b5..7af3a57bc 100644
--- a/data/strings.s
+++ b/data/strings.s
@@ -81,16 +81,16 @@ gUnknown_8415B44:: @ 0x8415B44
 gUnknown_8415BAA:: @ 0x8415BAA
 	.string "レポ-トの こうしんは\nしっぱいしました!\pバックアップカ-トリッジを\nこうかんしてください!\pくわしくは\nにんてんどう サ-ビスセンタ- まで\lおといあわせ ください$"
 
-gUnknown_8415BFF:: @ 8415BFF
+gText_SaveFileCorruptedPrevWillBeLoaded:: @ 8415BFF
 	.string "The save file is corrupted.\pThe previous save file will be\nloaded.$"
 
-gUnknown_8415C42:: @ 8415C42
+gText_SaveFileHasBeenDeleted:: @ 8415C42
 	.string "The save file has been\ndeleted...$"
 
-gUnknown_8415C64:: @ 8415C64
+gText_1MSubCircuitBoardNotInstalled:: @ 8415C64
 	.string "The 1M sub-circuit board is\nnot installed.$"
 
-gUnknown_8415C8F:: @ 0x8415C8F
+gTextJP_InternalBatteryHasRunDry:: @ 0x8415C8F
 	.string "でんちぎれの ために\nとけいが うごかなくなりました\pとけいに かんけいする できごとは おきませんが\nゲ-ムを つづけて あそぶことは できます$"
 
 gUnknown_8415CD9:: @ 0x8415CD9
diff --git a/include/strings.h b/include/strings.h
index 1bafbacbe..2dbe3919b 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -336,4 +336,9 @@ extern const u8 gText_CommErrorCheckConnections[];
 extern const u8 gText_ABtnTitleScreen[];
 extern const u8 gText_ABtnRegistrationCounter[];
 
+// main_menu
+extern const u8 gText_SaveFileCorruptedPrevWillBeLoaded[];
+extern const u8 gText_SaveFileHasBeenDeleted[];
+extern const u8 gText_1MSubCircuitBoardNotInstalled[];
+
 #endif //GUARD_STRINGS_H
diff --git a/ld_script.txt b/ld_script.txt
index fbf00f9c1..35c85e935 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -62,6 +62,7 @@ SECTIONS {
         src/string_util.o(.text);
         src/link.o(.text);
         src/multiboot.o(.text);
+        src/main_menu.o(.text);
         asm/main_menu.o(.text);
         src/battle_controllers.o(.text);
         src/decompress.o(.text);
diff --git a/src/main_menu.c b/src/main_menu.c
new file mode 100644
index 000000000..dfc4fb808
--- /dev/null
+++ b/src/main_menu.c
@@ -0,0 +1,217 @@
+#include "global.h"
+#include "palette.h"
+#include "gpu_regs.h"
+#include "scanline_effect.h"
+#include "bg.h"
+#include "task.h"
+#include "text.h"
+#include "save.h"
+#include "event_data.h"
+#include "window.h"
+#include "strings.h"
+
+bool32 sub_800C318(u8 a0);
+void sub_800C4D0(u8 taskId);
+void sub_800C634(u8 taskId, const u8 *str);
+void sub_800C688(u8 taskId);
+void sub_800C704(u8 taskId);
+void sub_800C780(u8 taskId);
+void sub_800C7A0(u8 taskId);
+void sub_800CA94(u8 taskId);
+void sub_800CDF8(const u8 *str);
+void sub_800D044(u8 a0);
+void sub_800D094(u8 a0);
+void sub_800D1E8(const struct WindowTemplate * template);
+
+extern const struct WindowTemplate gUnknown_8234618[];
+extern const u16 gUnknown_8234648[];
+extern const u16 gUnknown_8234668[];
+extern const struct BgTemplate gUnknown_8234690[1];
+
+void sub_800C2D4(void)
+{
+    RunTasks();
+    AnimateSprites();
+    BuildOamBuffer();
+    UpdatePaletteFade();
+}
+
+void sub_800C2EC(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+}
+
+void sub_800C300(void)
+{
+    sub_800C318(1);
+}
+
+void sub_800C30C(void)
+{
+    sub_800C318(1);
+}
+
+bool32 sub_800C318(u8 a0)
+{
+    u8 taskId;
+
+    SetVBlankCallback(NULL);
+    SetGpuReg(REG_OFFSET_DISPCNT, 0);
+    SetGpuReg(REG_OFFSET_BG2CNT, 0);
+    SetGpuReg(REG_OFFSET_BG1CNT, 0);
+    SetGpuReg(REG_OFFSET_BG0CNT, 0);
+    SetGpuReg(REG_OFFSET_BG2HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG2VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG0HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG0VOFS, 0);
+    DmaFill16(3, 0, (void *)VRAM, VRAM_SIZE);
+    DmaFill32(3, 0, (void *)OAM, OAM_SIZE);
+    DmaFill16(3, 0, (void *)(PLTT + 2), PLTT_SIZE - 2);
+    ScanlineEffect_Stop();
+    ResetTasks();
+    ResetSpriteData();
+    FreeAllSpritePalettes();
+    ResetPaletteFade();
+    ResetBgsAndClearDma3BusyFlags(FALSE);
+    InitBgsFromTemplates(0, gUnknown_8234690, NELEMS(gUnknown_8234690));
+    ChangeBgX(0, 0, 0);
+    ChangeBgY(0, 0, 0);
+    ChangeBgX(1, 0, 0);
+    ChangeBgY(1, 0, 0);
+    ChangeBgX(2, 0, 0);
+    ChangeBgY(2, 0, 0);
+    InitWindows(gUnknown_8234618);
+    DeactivateAllTextPrinters();
+    LoadPalette(gUnknown_8234648, 0x00, 0x20);
+    LoadPalette(gUnknown_8234668, 0xF0, 0x20);
+    SetGpuReg(REG_OFFSET_WIN0H, 0);
+    SetGpuReg(REG_OFFSET_WIN0V, 0);
+    SetGpuReg(REG_OFFSET_WININ, 0);
+    SetGpuReg(REG_OFFSET_WINOUT, 0);
+    SetGpuReg(REG_OFFSET_BLDCNT, 0);
+    SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+    SetGpuReg(REG_OFFSET_BLDY, 0);
+    SetMainCallback2(sub_800C2D4);
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_1D_MAP | DISPCNT_OBJ_ON | DISPCNT_WIN0_ON);
+    taskId = CreateTask(sub_800C4D0, 0);
+    gTasks[taskId].data[1] = 0;
+    gTasks[taskId].data[8] = a0;
+    return FALSE;
+}
+
+void sub_800C4D0(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        SetGpuReg(REG_OFFSET_WIN0H, 0);
+        SetGpuReg(REG_OFFSET_WIN0V, 0);
+        SetGpuReg(REG_OFFSET_WININ, 0x0001);
+        SetGpuReg(REG_OFFSET_WINOUT, 0x0021);
+        SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT1_BG0 | BLDCNT_TGT1_BG1 | BLDCNT_TGT1_BG2 | BLDCNT_TGT1_BG3 | BLDCNT_TGT1_OBJ | BLDCNT_TGT1_BD | BLDCNT_EFFECT_DARKEN);
+        SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(0, 0));
+        SetGpuReg(REG_OFFSET_BLDY, 7);
+        switch (gSaveFileStatus)
+        {
+        case 1:
+            sub_800D044(0);
+            if (sub_806E2BC() == TRUE)
+            {
+                gTasks[taskId].data[0] = 2;
+            }
+            else
+            {
+                gTasks[taskId].data[0] = 1;
+            }
+            gTasks[taskId].func = sub_800C704;
+            break;
+        case 2:
+            sub_800D094(0);
+            gTasks[taskId].data[0] = 0;
+            sub_800C634(taskId, gText_SaveFileHasBeenDeleted);
+            break;
+        case 0xFF:
+            sub_800D094(0);
+            gTasks[taskId].data[0] = 1;
+            sub_800C634(taskId, gText_SaveFileCorruptedPrevWillBeLoaded);
+            if (sub_806E2BC() == TRUE)
+            {
+                gTasks[taskId].data[0] = 2;
+            }
+            else
+            {
+                gTasks[taskId].data[0] = 1;
+            }
+            break;
+        case 0:
+        default:
+            sub_800D044(0);
+            gTasks[taskId].data[0] = 0;
+            gTasks[taskId].func = sub_800C704;
+            break;
+        case 4:
+            sub_800D094(0);
+            gTasks[taskId].data[0] = 0;
+            sub_800C634(taskId, gText_1MSubCircuitBoardNotInstalled);
+            break;
+        }
+    }
+}
+
+void sub_800C634(u8 taskId, const u8 *str)
+{
+    sub_800CDF8(str);
+    gTasks[taskId].func = sub_800C688;
+    BeginNormalPaletteFade(0xFFFFFFFF, 0, 16, 0, 0xFFFF);
+    ShowBg(0);
+    SetVBlankCallback(sub_800C2EC);
+}
+
+void sub_800C688(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        RunTextPrinters();
+        if (!IsTextPrinterActive(4) && JOY_NEW(A_BUTTON))
+        {
+            ClearWindowTilemap(4);
+            sub_800D1E8(&gUnknown_8234618[4]);
+            sub_800D044(0);
+            if (gTasks[taskId].data[0] == 0)
+                gTasks[taskId].func = sub_800C704;
+            else
+                gTasks[taskId].func = sub_800C7A0;
+        }
+    }
+}
+
+void sub_800C704(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        SetGpuReg(REG_OFFSET_WIN0H, 0);
+        SetGpuReg(REG_OFFSET_WIN0V, 0);
+        SetGpuReg(REG_OFFSET_WININ, 0x0001);
+        SetGpuReg(REG_OFFSET_WINOUT, 0x0021);
+        SetGpuReg(REG_OFFSET_BLDCNT,
+                  BLDCNT_TGT1_BG0 | BLDCNT_TGT1_BG1 | BLDCNT_TGT1_BG2 | BLDCNT_TGT1_BG3 | BLDCNT_TGT1_OBJ |
+                  BLDCNT_TGT1_BD | BLDCNT_EFFECT_DARKEN);
+        SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(0, 0));
+        SetGpuReg(REG_OFFSET_BLDY, 7);
+        if (gTasks[taskId].data[0] == 0)
+            gTasks[taskId].func = sub_800CA94;
+        else
+            gTasks[taskId].func = sub_800C780;
+    }
+}
+
+void sub_800C780(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        sub_800C7A0(taskId);
+    }
+}