Decomp and doc clear_save_data_screen

7 files changed, 241 insertions, 499 deletions

diff --git a/asm/clear_save_data_screen.s b/asm/clear_save_data_screen.s
deleted file mode 100644
index 367f12814..000000000
--- a/asm/clear_save_data_screen.s
+++ /dev/null
@@ -1,469 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start sub_80F5574
-sub_80F5574: @ 80F5574
-	push {lr}
-	bl RunTasks
-	bl AnimateSprites
-	bl BuildOamBuffer
-	bl UpdatePaletteFade
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80F5574
-
-	thumb_func_start sub_80F558C
-sub_80F558C: @ 80F558C
-	push {lr}
-	bl LoadOam
-	bl ProcessSpriteCopyRequests
-	bl TransferPlttBuffer
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80F558C
-
-	thumb_func_start CB2_SaveClearScreen_Init
-CB2_SaveClearScreen_Init: @ 80F55A0
-	push {r4,lr}
-	ldr r4, _080F55D0 @ =gUnknown_203AB54
-	movs r0, 0x4
-	bl AllocZeroed
-	str r0, [r4]
-	movs r1, 0
-	strb r1, [r0, 0x1]
-	ldr r0, [r4]
-	strb r1, [r0]
-	ldr r0, [r4]
-	strb r1, [r0, 0x2]
-	bl sub_80F580C
-	ldr r0, _080F55D4 @ =sub_80F55DC
-	movs r1, 0
-	bl CreateTask
-	ldr r0, _080F55D8 @ =sub_80F5574
-	bl SetMainCallback2
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080F55D0: .4byte gUnknown_203AB54
-_080F55D4: .4byte sub_80F55DC
-_080F55D8: .4byte sub_80F5574
-	thumb_func_end CB2_SaveClearScreen_Init
-
-	thumb_func_start sub_80F55DC
-sub_80F55DC: @ 80F55DC
-	push {r4,lr}
-	sub sp, 0x14
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _080F55F8 @ =gUnknown_203AB54
-	ldr r0, [r0]
-	ldrb r0, [r0, 0x1]
-	cmp r0, 0x5
-	bhi _080F56C0
-	lsls r0, 2
-	ldr r1, _080F55FC @ =_080F5600
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_080F55F8: .4byte gUnknown_203AB54
-_080F55FC: .4byte _080F5600
-	.align 2, 0
-_080F5600:
-	.4byte _080F5618
-	.4byte _080F562A
-	.4byte _080F5644
-	.4byte _080F564A
-	.4byte _080F5660
-	.4byte _080F569C
-_080F5618:
-	movs r0, 0x1
-	negs r0, r0
-	movs r1, 0
-	str r1, [sp]
-	movs r2, 0
-	movs r3, 0x10
-	bl BeginNormalPaletteFade
-	b _080F56E2
-_080F562A:
-	ldr r0, _080F5640 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _080F56EC
-	movs r0, 0
-	bl SetVBlankCallback
-	b _080F56E2
-	.align 2, 0
-_080F5640: .4byte gPaletteFade
-_080F5644:
-	bl sub_80F5820
-	b _080F56E2
-_080F564A:
-	movs r0, 0
-	movs r1, 0x1
-	movs r2, 0xF0
-	bl TextWindow_SetStdFrame0_WithPal
-	movs r0, 0x1
-	movs r1, 0x1
-	movs r2, 0xF0
-	bl TextWindow_SetStdFrame0_WithPal
-	b _080F56E2
-_080F5660:
-	movs r0, 0x1
-	movs r1, 0x1
-	movs r2, 0x1
-	movs r3, 0xF
-	bl DrawStdFrameWithCustomTileAndPalette
-	movs r0, 0x1
-	str r0, [sp]
-	str r0, [sp, 0x4]
-	ldr r0, _080F5694 @ =gUnknown_841EE80
-	str r0, [sp, 0x8]
-	movs r0, 0
-	str r0, [sp, 0xC]
-	ldr r0, _080F5698 @ =gUnknown_841B69E
-	str r0, [sp, 0x10]
-	movs r0, 0x1
-	movs r1, 0x2
-	movs r2, 0
-	movs r3, 0x3
-	bl AddTextPrinterParameterized4
-	movs r0, 0x1
-	movs r1, 0x2
-	bl CopyWindowToVram
-	b _080F56E2
-	.align 2, 0
-_080F5694: .4byte gUnknown_841EE80
-_080F5698: .4byte gUnknown_841B69E
-_080F569C:
-	ldr r0, _080F56BC @ =gUnknown_841EE68
-	movs r2, 0x1
-	str r2, [sp]
-	movs r1, 0xF
-	str r1, [sp, 0x4]
-	str r2, [sp, 0x8]
-	movs r1, 0x2
-	movs r2, 0
-	movs r3, 0x2
-	bl CreateYesNoMenu
-	movs r0, 0
-	bl CopyBgTilemapBufferToVram
-	b _080F56E2
-	.align 2, 0
-_080F56BC: .4byte gUnknown_841EE68
-_080F56C0:
-	ldr r0, _080F56F4 @ =0x0000ffff
-	str r0, [sp]
-	movs r1, 0
-	movs r2, 0x10
-	movs r3, 0
-	bl BeginNormalPaletteFade
-	ldr r0, _080F56F8 @ =sub_80F558C
-	bl SetVBlankCallback
-	ldr r1, _080F56FC @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r0, r1
-	ldr r1, _080F5700 @ =sub_80F5708
-	str r1, [r0]
-_080F56E2:
-	ldr r0, _080F5704 @ =gUnknown_203AB54
-	ldr r1, [r0]
-	ldrb r0, [r1, 0x1]
-	adds r0, 0x1
-	strb r0, [r1, 0x1]
-_080F56EC:
-	add sp, 0x14
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080F56F4: .4byte 0x0000ffff
-_080F56F8: .4byte sub_80F558C
-_080F56FC: .4byte gTasks
-_080F5700: .4byte sub_80F5708
-_080F5704: .4byte gUnknown_203AB54
-	thumb_func_end sub_80F55DC
-
-	thumb_func_start sub_80F5708
-sub_80F5708: @ 80F5708
-	push {r4,r5,lr}
-	sub sp, 0x14
-	lsls r0, 24
-	lsrs r1, r0, 24
-	ldr r5, _080F5740 @ =gUnknown_203AB54
-	ldr r0, [r5]
-	ldrb r0, [r0]
-	cmp r0, 0
-	bne _080F578C
-	bl Menu_ProcessInputNoWrapClearOnChoose
-	lsls r0, 24
-	asrs r4, r0, 24
-	movs r0, 0x1
-	negs r0, r0
-	cmp r4, r0
-	beq _080F5736
-	cmp r4, r0
-	ble _080F5792
-	cmp r4, 0
-	beq _080F5744
-	cmp r4, 0x1
-	bne _080F5792
-_080F5736:
-	movs r0, 0x5
-	bl PlaySE
-	b _080F577A
-	.align 2, 0
-_080F5740: .4byte gUnknown_203AB54
-_080F5744:
-	movs r0, 0x5
-	bl PlaySE
-	movs r0, 0x1
-	movs r1, 0x11
-	bl FillWindowPixelBuffer
-	movs r0, 0x1
-	str r0, [sp]
-	str r0, [sp, 0x4]
-	ldr r0, _080F5784 @ =gUnknown_841EE80
-	str r0, [sp, 0x8]
-	str r4, [sp, 0xC]
-	ldr r0, _080F5788 @ =gUnknown_841B6B9
-	str r0, [sp, 0x10]
-	movs r0, 0x1
-	movs r1, 0x2
-	movs r2, 0
-	movs r3, 0x3
-	bl AddTextPrinterParameterized4
-	movs r0, 0x1
-	movs r1, 0x3
-	bl CopyWindowToVram
-	bl ClearSaveData
-_080F577A:
-	ldr r1, [r5]
-	ldrb r0, [r1]
-	adds r0, 0x1
-	strb r0, [r1]
-	b _080F5792
-	.align 2, 0
-_080F5784: .4byte gUnknown_841EE80
-_080F5788: .4byte gUnknown_841B6B9
-_080F578C:
-	adds r0, r1, 0
-	bl sub_80F579C
-_080F5792:
-	add sp, 0x14
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80F5708
-
-	thumb_func_start sub_80F579C
-sub_80F579C: @ 80F579C
-	push {r4-r6,lr}
-	sub sp, 0x4
-	lsls r0, 24
-	lsrs r6, r0, 24
-	ldr r5, _080F57B4 @ =gUnknown_203AB54
-	ldr r0, [r5]
-	ldrb r0, [r0, 0x2]
-	cmp r0, 0
-	beq _080F57B8
-	cmp r0, 0x1
-	beq _080F57D4
-	b _080F57FE
-	.align 2, 0
-_080F57B4: .4byte gUnknown_203AB54
-_080F57B8:
-	ldr r0, _080F57D0 @ =0x0000ffff
-	str r0, [sp]
-	movs r1, 0
-	movs r2, 0
-	movs r3, 0x10
-	bl BeginNormalPaletteFade
-	ldr r1, [r5]
-	ldrb r0, [r1, 0x2]
-	adds r0, 0x1
-	strb r0, [r1, 0x2]
-	b _080F57FE
-	.align 2, 0
-_080F57D0: .4byte 0x0000ffff
-_080F57D4:
-	ldr r0, _080F5808 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, 0
-	bne _080F57FE
-	bl DestroyYesNoMenu
-	adds r0, r6, 0
-	bl DestroyTask
-	bl FreeAllWindowBuffers
-	ldr r0, [r5]
-	bl Free
-	str r4, [r5]
-	bl DoSoftReset
-_080F57FE:
-	add sp, 0x4
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080F5808: .4byte gPaletteFade
-	thumb_func_end sub_80F579C
-
-	thumb_func_start sub_80F580C
-sub_80F580C: @ 80F580C
-	push {lr}
-	bl ResetSpriteData
-	bl ResetPaletteFade
-	bl ResetTasks
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80F580C
-
-	thumb_func_start sub_80F5820
-sub_80F5820: @ 80F5820
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	sub sp, 0x8
-	movs r3, 0xC0
-	lsls r3, 19
-	movs r4, 0xC0
-	lsls r4, 9
-	add r0, sp, 0x4
-	mov r8, r0
-	mov r2, sp
-	movs r6, 0
-	ldr r1, _080F593C @ =0x040000d4
-	movs r5, 0x80
-	lsls r5, 5
-	ldr r7, _080F5940 @ =0x81000800
-	movs r0, 0x81
-	lsls r0, 24
-	mov r12, r0
-_080F5846:
-	strh r6, [r2]
-	mov r0, sp
-	str r0, [r1]
-	str r3, [r1, 0x4]
-	str r7, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	adds r3, r5
-	subs r4, r5
-	cmp r4, r5
-	bhi _080F5846
-	strh r6, [r2]
-	mov r2, sp
-	str r2, [r1]
-	str r3, [r1, 0x4]
-	lsrs r0, r4, 1
-	mov r2, r12
-	orrs r0, r2
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	movs r0, 0xE0
-	lsls r0, 19
-	movs r3, 0x80
-	lsls r3, 3
-	movs r4, 0
-	str r4, [sp, 0x4]
-	ldr r2, _080F593C @ =0x040000d4
-	mov r1, r8
-	str r1, [r2]
-	str r0, [r2, 0x4]
-	lsrs r0, r3, 2
-	movs r1, 0x85
-	lsls r1, 24
-	orrs r0, r1
-	str r0, [r2, 0x8]
-	ldr r0, [r2, 0x8]
-	movs r1, 0xA0
-	lsls r1, 19
-	mov r0, sp
-	strh r4, [r0]
-	str r0, [r2]
-	str r1, [r2, 0x4]
-	lsrs r3, 1
-	movs r0, 0x81
-	lsls r0, 24
-	orrs r3, r0
-	str r3, [r2, 0x8]
-	ldr r0, [r2, 0x8]
-	movs r0, 0
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x54
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0
-	bl ResetBgsAndClearDma3BusyFlags
-	ldr r1, _080F5944 @ =gUnknown_841EE64
-	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
-	movs r0, 0x3
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgX
-	movs r0, 0x3
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgY
-	ldr r0, _080F5948 @ =gUnknown_841EE68
-	bl InitWindows
-	bl DeactivateAllTextPrinters
-	movs r1, 0x82
-	lsls r1, 5
-	movs r0, 0
-	bl SetGpuReg
-	movs r0, 0
-	bl ShowBg
-	add sp, 0x8
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080F593C: .4byte 0x040000d4
-_080F5940: .4byte 0x81000800
-_080F5944: .4byte gUnknown_841EE64
-_080F5948: .4byte gUnknown_841EE68
-	thumb_func_end sub_80F5820
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/data/clear_save_data_screen.s b/data/clear_save_data_screen.s
index 32a2d422a..7b0827b6c 100644
--- a/data/clear_save_data_screen.s
+++ b/data/clear_save_data_screen.s
@@ -5,26 +5,3 @@
 	.include "constants/constants.inc"
 	.section .rodata
 	.align 2
-
-gUnknown_841EE64:: @ 841EE64
-	.4byte 0x000001f0
-	@ {
-	@ 	.bg = 0,
-	@ 	.charBaseIndex = 0,
-	@ 	.mapBaseIndex = 31,
-	@ 	.screenSize = 0,
-	@ 	.paletteMode = 0,
-	@ 	.priority = 0,
-	@ 	.baseTile = 0x0000
-	@ }
-
-gUnknown_841EE68:: @ 841EE68
-	.byte 0, 3, 5, 6, 4, 15
-	.2byte 0x000a
-	.byte 0, 3, 15, 23, 4, 15
-	.2byte 0x0022
-	.byte 255, 0, 0, 0, 0, 0
-	.2byte 0x0000
-
-gUnknown_841EE80:: @ 841EE80
-	.byte 0x01, 0x02, 0x03
diff --git a/include/gba/macro.h b/include/gba/macro.h
index 6cf2e1651..cc8535305 100644
--- a/include/gba/macro.h
+++ b/include/gba/macro.h
@@ -171,6 +171,16 @@
 #define DmaFill16Defvars(dmaNum, value, dest, size) DmaFillDefvars(dmaNum, value, dest, size, 16)
 #define DmaFill32Defvars(dmaNum, value, dest, size) DmaFillDefvars(dmaNum, value, dest, size, 32)
 
+#define DmaClearDefvars(dmaNum, dest, size, bit) \
+{                                                \
+    void *_dest = dest;                          \
+    u32 _size = size;                            \
+    DmaClear##bit(dmaNum, _dest, _size);         \
+}
+
+#define DmaClear16Defvars(dmaNum, dest, size) DmaClearDefvars(dmaNum, dest, size, 16)
+#define DmaClear32Defvars(dmaNum, dest, size) DmaClearDefvars(dmaNum, dest, size, 32)
+
 #define IntrEnable(flags)                                       \
 {                                                               \
     u16 imeTemp;                                                \
diff --git a/include/strings.h b/include/strings.h
index f2207e7a7..d5c6f4b58 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -1309,4 +1309,8 @@ extern const u8 gText_QuestLog_VictoryRoad[];
 extern const u8 gText_QuestLog_PokemonLeague[];
 extern const u8 gText_QuestLog_CeruleanCave[];
 
+// clear_save_data_screen
+extern const u8 gUnknown_841B69E[];
+extern const u8 gUnknown_841B6B9[];
+
 #endif //GUARD_STRINGS_H
diff --git a/ld_script.txt b/ld_script.txt
index 5c908a5f8..1de01ca5f 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -216,7 +216,7 @@ SECTIONS {
         src/credits.o(.text);
         src/diploma.o(.text);
         src/save_failed_screen.o(.text);
-        asm/clear_save_data_screen.o(.text);
+        src/clear_save_data_screen.o(.text);
         src/evolution_graphics.o(.text);
         src/fldeff_teleport.o(.text);
         src/new_menu_helpers.o(.text);
@@ -510,7 +510,7 @@ SECTIONS {
         src/diploma.o(.rodata);
         src/strings.o(.rodata);
         src/save_failed_screen.o(.rodata);
-        data/clear_save_data_screen.o(.rodata);
+        src/clear_save_data_screen.o(.rodata);
         src/evolution_graphics.o(.rodata);
         src/new_menu_helpers.o(.rodata);
         src/box_party_pokemon_dropdown.o(.rodata);
diff --git a/src/clear_save_data_screen.c b/src/clear_save_data_screen.c
new file mode 100644
index 000000000..5485e8da9
--- /dev/null
+++ b/src/clear_save_data_screen.c
@@ -0,0 +1,224 @@
+#include "global.h"
+#include "gflib.h"
+#include "menu.h"
+#include "save.h"
+#include "strings.h"
+#include "task.h"
+#include "text_window.h"
+#include "constants/songs.h"
+
+struct ClearSaveDataStruct {
+    u8 unk0;
+    u8 unk1;
+    u8 unk2;
+};
+
+static EWRAM_DATA struct ClearSaveDataStruct * sClearSaveDataState = NULL;
+
+static void Task_DrawClearSaveDataScreen(u8 taskId);
+static void Task_HandleYesNoMenu(u8 taskId);
+static void Task_CleanUpAndSoftReset(u8 taskId);
+static void CB2_Sub_SaveClearScreen_Init(void);
+static void SaveClearScreen_GpuInit(void);
+
+static const struct BgTemplate sBgTemplates[] = {
+    {
+        .bg = 0,
+        .charBaseIndex = 0,
+        .mapBaseIndex = 31,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 0,
+        .baseTile = 0x000
+    }
+};
+
+static const struct WindowTemplate sWindowTemplates[] = {
+    {
+        .bg = 0,
+        .tilemapLeft = 3,
+        .tilemapTop = 5,
+        .width = 6,
+        .height = 4,
+        .paletteNum = 0xF,
+        .baseBlock = 0x00A
+    }, {
+        .bg = 0,
+        .tilemapLeft = 3,
+        .tilemapTop = 15,
+        .width = 23,
+        .height = 4,
+        .paletteNum = 0xF,
+        .baseBlock = 0x022
+    }, DUMMY_WIN_TEMPLATE
+};
+
+static const u8 sTextColor[] = {
+    TEXT_COLOR_WHITE,
+    TEXT_COLOR_DARK_GREY,
+    TEXT_COLOR_LIGHT_GREY
+};
+
+static void CB2_RunClearSaveDataScreen(void)
+{
+    RunTasks();
+    AnimateSprites();
+    BuildOamBuffer();
+    UpdatePaletteFade();
+}
+
+static void VBlankCB_WaitYesNo(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+}
+
+void CB2_SaveClearScreen_Init(void)
+{
+    sClearSaveDataState = AllocZeroed(sizeof(struct ClearSaveDataStruct));
+    sClearSaveDataState->unk1 = 0;
+    sClearSaveDataState->unk0 = 0;
+    sClearSaveDataState->unk2 = 0;
+    CB2_Sub_SaveClearScreen_Init();
+    CreateTask(Task_DrawClearSaveDataScreen, 0);
+    SetMainCallback2(CB2_RunClearSaveDataScreen);
+}
+
+static void Task_DrawClearSaveDataScreen(u8 taskId)
+{
+    switch (sClearSaveDataState->unk1)
+    {
+    case 0:
+        BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 16, RGB_BLACK);
+        break;
+    case 1:
+        if (gPaletteFade.active)
+            return;
+        SetVBlankCallback(NULL);
+        break;
+    case 2:
+        SaveClearScreen_GpuInit();
+        break;
+    case 3:
+        TextWindow_SetStdFrame0_WithPal(0, 0x001, 0xF0);
+        TextWindow_SetStdFrame0_WithPal(1, 0x001, 0xF0);
+        break;
+    case 4:
+        DrawStdFrameWithCustomTileAndPalette(1, TRUE, 0x001, 0xF);
+        AddTextPrinterParameterized4(1, 2, 0, 3, 1, 1, sTextColor, 0, gUnknown_841B69E);
+        CopyWindowToVram(1, 2);
+        break;
+    case 5:
+        CreateYesNoMenu(&sWindowTemplates[0], 2, 0, 2, 0x001, 0xF, 1);
+        CopyBgTilemapBufferToVram(0);
+        break;
+    default:
+        BeginNormalPaletteFade(0xFFFF, 0, 16, 0, RGB_WHITEALPHA);
+        SetVBlankCallback(VBlankCB_WaitYesNo);
+        gTasks[taskId].func = Task_HandleYesNoMenu;
+        break;
+    }
+    sClearSaveDataState->unk1++;
+}
+
+static void Task_HandleYesNoMenu(u8 taskId)
+{
+    // agbcc refuses to keep &sClearSaveDataState in a register
+    // unless explicitly told to do so as such:
+    struct ClearSaveDataStruct ** r5 = &sClearSaveDataState;
+    if ((*r5)->unk0 == 0)
+    {
+        switch (Menu_ProcessInputNoWrapClearOnChoose())
+        {
+        case -1:
+        case 1:
+            PlaySE(SE_SELECT);
+            break;
+        case 0:
+            PlaySE(SE_SELECT);
+            FillWindowPixelBuffer(1, PIXEL_FILL(1));
+            AddTextPrinterParameterized4(1, 2, 0, 3, 1, 1, sTextColor, 0, gUnknown_841B6B9);
+            CopyWindowToVram(1, 3);
+            ClearSaveData();
+            break;
+        case -2:
+        default:
+            return;
+        }
+        (*r5)->unk0++;
+    }
+    else
+    {
+        Task_CleanUpAndSoftReset(taskId);
+    }
+}
+
+static void Task_CleanUpAndSoftReset(u8 taskId)
+{
+    switch (sClearSaveDataState->unk2)
+    {
+    case 0:
+        BeginNormalPaletteFade(0xFFFF, 0, 0, 16, RGB_WHITEALPHA);
+        sClearSaveDataState->unk2++;
+        break;
+    case 1:
+        if (!gPaletteFade.active)
+        {
+            DestroyYesNoMenu();
+            DestroyTask(taskId);
+            FreeAllWindowBuffers();
+            FREE_AND_SET_NULL(sClearSaveDataState);
+            DoSoftReset();
+            // noreturn
+        }
+        break;
+    }
+}
+
+static void CB2_Sub_SaveClearScreen_Init(void)
+{
+    ResetSpriteData();
+    ResetPaletteFade();
+    ResetTasks();
+}
+
+static void SaveClearScreen_GpuInit(void)
+{
+    DmaClearLarge16(3, (void *)VRAM, VRAM_SIZE, 0x1000);
+
+#ifndef NONMATCHING
+    asm("":::"ip");
+#endif
+
+    do
+    {
+        void * dest = (void *)OAM;
+        size_t size = OAM_SIZE;
+        DmaClear32(3, dest, size);
+    } while (0);
+
+    do
+    {
+        void * dest = (void *)PLTT;
+        size_t size = PLTT_SIZE;
+        DmaClear16(3, dest, size);
+    } while (0);
+
+    SetGpuReg(REG_OFFSET_DISPCNT, 0);
+    SetGpuReg(REG_OFFSET_BLDY, 0);
+    ResetBgsAndClearDma3BusyFlags(FALSE);
+    InitBgsFromTemplates(0, sBgTemplates, NELEMS(sBgTemplates));
+    ChangeBgX(0, 0, 0);
+    ChangeBgY(0, 0, 0);
+    ChangeBgX(1, 0, 0);
+    ChangeBgY(1, 0, 0);
+    ChangeBgX(2, 0, 0);
+    ChangeBgY(2, 0, 0);
+    ChangeBgX(3, 0, 0);
+    ChangeBgY(3, 0, 0);
+    InitWindows(sWindowTemplates);
+    DeactivateAllTextPrinters();
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_0 | DISPCNT_OBJ_1D_MAP | DISPCNT_OBJ_ON);
+    ShowBg(0);
+}
diff --git a/sym_ewram.txt b/sym_ewram.txt
index 2510d6649..4ec32870e 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -297,14 +297,10 @@ gUnknown_203998C: @ 203998C
 	.include "src/credits.o"
 	.align 2
 	.include "src/diploma.o"
-
 	.align 2
 	.include "src/save_failed_screen.o"
-
 	.align 2
-gUnknown_203AB54: @ 203AB54
-	.space 0x4
-
+	.include "src/clear_save_data_screen.o"
 	.align 2
 	.include "src/new_menu_helpers.o"
 	.align 2