decompile title screen

16 files changed, 836 insertions, 1496 deletions

diff --git a/asm/intro.s b/asm/intro.s
index 3e95c6ec7..a0149851e 100644
--- a/asm/intro.s
+++ b/asm/intro.s
@@ -59,7 +59,7 @@ sub_816CC54: @ 816CC54
 	lsls r0, 24
 	cmp r0, 0
 	bne _0816CC66
-	ldr r0, =c2_title_screen_1
+	ldr r0, =CB2_InitTitleScreen
 	bl SetMainCallback2
 _0816CC66:
 	pop {r0}
@@ -337,13 +337,13 @@ _0816CEFA:
 	.pool
 	thumb_func_end c2_copyright_1
 
-	thumb_func_start c2_show_copyright_and_intro_again_2
-c2_show_copyright_and_intro_again_2: @ 816CF0C
+	thumb_func_start CB2_InitCopyrightScreenAfterTitleScreen
+CB2_InitCopyrightScreenAfterTitleScreen: @ 816CF0C
 	push {lr}
 	bl do_copyright_screen
 	pop {r0}
 	bx r0
-	thumb_func_end c2_show_copyright_and_intro_again_2
+	thumb_func_end CB2_InitCopyrightScreenAfterTitleScreen
 
 	thumb_func_start task_intro_1
 @ void task_intro_1(int task_id)
diff --git a/asm/link.s b/asm/link.s
index a3d621601..de0ec51a1 100644
--- a/asm/link.s
+++ b/asm/link.s
@@ -28867,7 +28867,7 @@ sub_80186A4: @ 80186A4
 	movs r0, 0x3
 	bl GetBgTilemapBuffer
 	bl Free
-	ldr r0, =c2_title_screen_1
+	ldr r0, =CB2_InitTitleScreen
 	bl SetMainCallback2
 	pop {r0}
 	bx r0
diff --git a/asm/main_menu.s b/asm/main_menu.s
index 08e0c3103..9c6cd1253 100644
--- a/asm/main_menu.s
+++ b/asm/main_menu.s
@@ -1608,7 +1608,7 @@ _08030578:
 	ldr r0, =gUnknown_02022D06
 	strh r4, [r0]
 	bl FreeAllWindowBuffers
-	ldr r0, =c2_title_screen_1
+	ldr r0, =CB2_InitTitleScreen
 	bl SetMainCallback2
 	adds r0, r5, 0
 	bl DestroyTask
diff --git a/asm/reset_rtc_screen.s b/asm/reset_rtc_screen.s
index b314afbf5..5877ff00e 100644
--- a/asm/reset_rtc_screen.s
+++ b/asm/reset_rtc_screen.s
@@ -830,8 +830,8 @@ sub_809EF00: @ 809EF00
 	.pool
 	thumb_func_end sub_809EF00
 
-	thumb_func_start sub_809EF88
-sub_809EF88: @ 809EF88
+	thumb_func_start CB2_InitResetRtcScreen
+CB2_InitResetRtcScreen: @ 809EF88
 	push {r4-r7,lr}
 	sub sp, 0x4
 	movs r0, 0
@@ -905,7 +905,7 @@ _0809EFCA:
 	pop {r0}
 	bx r0
 	.pool
-	thumb_func_end sub_809EF88
+	thumb_func_end CB2_InitResetRtcScreen
 
 	thumb_func_start sub_809F048
 sub_809F048: @ 809F048
diff --git a/asm/title_screen.s b/asm/title_screen.s
deleted file mode 100644
index 32594424a..000000000
--- a/asm/title_screen.s
+++ /dev/null
@@ -1,1321 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start sub_80AA40C
-sub_80AA40C: @ 80AA40C
-	push {lr}
-	adds r3, r0, 0
-	ldr r2, =gTasks
-	movs r0, 0x30
-	ldrsh r1, [r3, r0]
-	lsls r0, r1, 2
-	adds r0, r1
-	lsls r0, 3
-	adds r0, r2
-	movs r1, 0xA
-	ldrsh r0, [r0, r1]
-	cmp r0, 0
-	beq _080AA43C
-	ldrb r0, [r3, 0x1]
-	movs r1, 0xD
-	negs r1, r1
-	ands r1, r0
-	strb r1, [r3, 0x1]
-	movs r0, 0x42
-	strh r0, [r3, 0x22]
-	b _080AA46A
-	.pool
-_080AA43C:
-	ldrh r1, [r3, 0x22]
-	movs r2, 0x22
-	ldrsh r0, [r3, r2]
-	cmp r0, 0x42
-	beq _080AA44A
-	adds r0, r1, 0x1
-	strh r0, [r3, 0x22]
-_080AA44A:
-	ldrh r1, [r3, 0x2E]
-	movs r2, 0x2E
-	ldrsh r0, [r3, r2]
-	cmp r0, 0
-	beq _080AA458
-	subs r0, r1, 0x1
-	strh r0, [r3, 0x2E]
-_080AA458:
-	ldr r0, =gUnknown_0853FF70
-	movs r2, 0x2E
-	ldrsh r1, [r3, r2]
-	lsls r1, 1
-	adds r1, r0
-	ldrh r1, [r1]
-	movs r0, 0x52
-	bl SetGpuReg
-_080AA46A:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80AA40C
-
-	thumb_func_start sub_80AA474
-sub_80AA474: @ 80AA474
-	push {lr}
-	adds r3, r0, 0
-	ldr r2, =gTasks
-	movs r0, 0x30
-	ldrsh r1, [r3, r0]
-	lsls r0, r1, 2
-	adds r0, r1
-	lsls r0, 3
-	adds r0, r2
-	movs r1, 0xA
-	ldrsh r0, [r0, r1]
-	cmp r0, 0
-	beq _080AA4A0
-	ldrb r0, [r3, 0x1]
-	movs r1, 0xD
-	negs r1, r1
-	ands r1, r0
-	strb r1, [r3, 0x1]
-	movs r0, 0x42
-	b _080AA4AC
-	.pool
-_080AA4A0:
-	ldrh r1, [r3, 0x22]
-	movs r2, 0x22
-	ldrsh r0, [r3, r2]
-	cmp r0, 0x42
-	beq _080AA4AE
-	adds r0, r1, 0x1
-_080AA4AC:
-	strh r0, [r3, 0x22]
-_080AA4AE:
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80AA474
-
-	thumb_func_start sub_80AA4B4
-sub_80AA4B4: @ 80AA4B4
-	push {lr}
-	adds r2, r0, 0
-	movs r1, 0x2E
-	ldrsh r0, [r2, r1]
-	cmp r0, 0x1
-	bne _080AA4DC
-	ldrh r0, [r2, 0x30]
-	adds r0, 0x1
-	strh r0, [r2, 0x30]
-	movs r1, 0x10
-	ands r0, r1
-	cmp r0, 0
-	bne _080AA4DC
-	adds r0, r2, 0
-	adds r0, 0x3E
-	ldrb r1, [r0]
-	movs r2, 0x4
-	orrs r1, r2
-	strb r1, [r0]
-	b _080AA4E8
-_080AA4DC:
-	adds r2, 0x3E
-	ldrb r1, [r2]
-	movs r0, 0x5
-	negs r0, r0
-	ands r0, r1
-	strb r0, [r2]
-_080AA4E8:
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80AA4B4
-
-	thumb_func_start sub_80AA4EC
-sub_80AA4EC: @ 80AA4EC
-	push {r4-r7,lr}
-	lsls r0, 16
-	ldr r2, =0xffc00000
-	adds r0, r2
-	lsrs r0, 16
-	movs r6, 0
-	lsls r7, r1, 16
-_080AA4FA:
-	lsls r5, r0, 16
-	asrs r5, 16
-	ldr r0, =gUnknown_085400D8
-	adds r1, r5, 0
-	asrs r2, r7, 16
-	movs r3, 0
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r4, r0, 4
-	adds r4, r0
-	lsls r4, 2
-	ldr r0, =gSprites
-	adds r4, r0
-	adds r0, r4, 0
-	adds r1, r6, 0
-	bl StartSpriteAnim
-	movs r0, 0x1
-	strh r0, [r4, 0x2E]
-	adds r0, r6, 0x1
-	lsls r0, 24
-	lsrs r6, r0, 24
-	adds r5, 0x20
-	lsls r5, 16
-	lsrs r0, r5, 16
-	cmp r6, 0x4
-	bls _080AA4FA
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80AA4EC
-
-	thumb_func_start sub_80AA548
-sub_80AA548: @ 80AA548
-	push {r4-r6,lr}
-	lsls r0, 16
-	ldr r2, =0xffc00000
-	adds r0, r2
-	lsrs r0, 16
-	movs r5, 0
-	lsls r6, r1, 16
-_080AA556:
-	lsls r4, r0, 16
-	asrs r4, 16
-	ldr r0, =gUnknown_085400D8
-	adds r1, r4, 0
-	asrs r2, r6, 16
-	movs r3, 0
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r2, r0, 4
-	adds r2, r0
-	lsls r2, 2
-	ldr r0, =gSprites
-	adds r2, r0
-	adds r1, r5, 0x5
-	lsls r1, 24
-	lsrs r1, 24
-	adds r0, r2, 0
-	bl StartSpriteAnim
-	adds r0, r5, 0x1
-	lsls r0, 24
-	lsrs r5, r0, 24
-	adds r4, 0x20
-	lsls r4, 16
-	lsrs r0, r4, 16
-	cmp r5, 0x4
-	bls _080AA556
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80AA548
-
-	thumb_func_start title_screen_logo_shine_obj_callback_type1
-@ void title_screen_logo_shine_obj_callback_type1(struct obj *obj)
-title_screen_logo_shine_obj_callback_type1: @ 80AA5A4
-	push {r4,lr}
-	adds r3, r0, 0
-	ldrh r2, [r3, 0x20]
-	movs r0, 0x20
-	ldrsh r1, [r3, r0]
-	ldr r0, =0x0000010f
-	cmp r1, r0
-	bgt _080AA63C
-	movs r4, 0x2E
-	ldrsh r0, [r3, r4]
-	adds r4, r2, 0
-	cmp r0, 0
-	beq _080AA630
-	cmp r1, 0x77
-	bgt _080AA5E0
-	ldrh r1, [r3, 0x30]
-	movs r2, 0x30
-	ldrsh r0, [r3, r2]
-	cmp r0, 0x1E
-	bgt _080AA5F8
-	adds r1, 0x1
-	strh r1, [r3, 0x30]
-	lsls r0, r1, 16
-	asrs r0, 16
-	cmp r0, 0x1E
-	bgt _080AA5F8
-	adds r0, r1, 0x1
-	b _080AA5F6
-	.pool
-_080AA5E0:
-	ldrh r1, [r3, 0x30]
-	movs r4, 0x30
-	ldrsh r0, [r3, r4]
-	cmp r0, 0
-	beq _080AA5F8
-	subs r0, r1, 0x1
-	strh r0, [r3, 0x30]
-	lsls r0, 16
-	cmp r0, 0
-	beq _080AA5F8
-	subs r0, r1, 0x2
-_080AA5F6:
-	strh r0, [r3, 0x30]
-_080AA5F8:
-	ldrh r1, [r3, 0x30]
-	movs r0, 0x1F
-	ands r0, r1
-	lsls r2, r0, 10
-	lsls r1, r0, 5
-	adds r2, r1
-	orrs r2, r0
-	movs r1, 0x20
-	ldrsh r0, [r3, r1]
-	ldrh r4, [r3, 0x20]
-	cmp r0, 0x84
-	beq _080AA61C
-	cmp r0, 0x88
-	beq _080AA61C
-	cmp r0, 0x8C
-	beq _080AA61C
-	cmp r0, 0x90
-	bne _080AA62C
-_080AA61C:
-	ldr r1, =gPlttBufferFaded
-	ldr r0, =0x000033f8
-	strh r0, [r1]
-	b _080AA630
-	.pool
-_080AA62C:
-	ldr r0, =gPlttBufferFaded
-	strh r2, [r0]
-_080AA630:
-	adds r0, r4, 0x4
-	strh r0, [r3, 0x20]
-	b _080AA648
-	.pool
-_080AA63C:
-	ldr r1, =gPlttBufferFaded
-	movs r0, 0
-	strh r0, [r1]
-	adds r0, r3, 0
-	bl DestroySprite
-_080AA648:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end title_screen_logo_shine_obj_callback_type1
-
-	thumb_func_start title_screen_logo_shine_obj_callback_type2
-@ void title_screen_logo_shine_obj_callback_type2(struct obj *obj)
-title_screen_logo_shine_obj_callback_type2: @ 80AA654
-	push {lr}
-	adds r2, r0, 0
-	ldrh r3, [r2, 0x20]
-	movs r0, 0x20
-	ldrsh r1, [r2, r0]
-	ldr r0, =0x0000010f
-	cmp r1, r0
-	bgt _080AA670
-	adds r0, r3, 0
-	adds r0, 0x8
-	strh r0, [r2, 0x20]
-	b _080AA676
-	.pool
-_080AA670:
-	adds r0, r2, 0
-	bl DestroySprite
-_080AA676:
-	pop {r0}
-	bx r0
-	thumb_func_end title_screen_logo_shine_obj_callback_type2
-
-	thumb_func_start title_screen_add_logo_shine_obj
-@ void title_screen_add_logo_shine_obj(int a1)
-title_screen_add_logo_shine_obj: @ 80AA67C
-	push {r4-r6,lr}
-	mov r6, r10
-	mov r5, r9
-	mov r4, r8
-	push {r4-r6}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	cmp r5, 0x1
-	beq _080AA6D0
-	cmp r5, 0x1
-	bgt _080AA698
-	cmp r5, 0
-	beq _080AA69C
-	b _080AA766
-_080AA698:
-	cmp r5, 0x2
-	bne _080AA766
-_080AA69C:
-	ldr r0, =gUnknown_08540124
-	movs r1, 0
-	movs r2, 0x44
-	movs r3, 0
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r2, r0, 24
-	ldr r1, =gSprites
-	lsls r0, r2, 4
-	adds r0, r2
-	lsls r0, 2
-	adds r0, r1
-	ldrb r2, [r0, 0x1]
-	movs r1, 0xD
-	negs r1, r1
-	ands r1, r2
-	movs r2, 0x8
-	orrs r1, r2
-	strb r1, [r0, 0x1]
-	strh r5, [r0, 0x2E]
-	b _080AA766
-	.pool
-_080AA6D0:
-	ldr r0, =gUnknown_08540124
-	mov r9, r0
-	movs r1, 0
-	movs r2, 0x44
-	movs r3, 0
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r2, r0, 24
-	ldr r6, =gSprites
-	lsls r1, r2, 4
-	adds r1, r2
-	lsls r1, 2
-	adds r1, r6
-	ldrb r2, [r1, 0x1]
-	movs r4, 0xD
-	negs r4, r4
-	adds r0, r4, 0
-	ands r0, r2
-	movs r2, 0x8
-	mov r8, r2
-	mov r2, r8
-	orrs r0, r2
-	strb r0, [r1, 0x1]
-	strh r5, [r1, 0x2E]
-	adds r1, 0x3E
-	ldrb r0, [r1]
-	movs r2, 0x4
-	orrs r0, r2
-	strb r0, [r1]
-	mov r0, r9
-	movs r1, 0
-	movs r2, 0x44
-	movs r3, 0
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r2, r0, 24
-	lsls r1, r2, 4
-	adds r1, r2
-	lsls r1, 2
-	adds r5, r6, 0
-	adds r5, 0x1C
-	adds r0, r1, r5
-	ldr r2, =title_screen_logo_shine_obj_callback_type2
-	mov r10, r2
-	str r2, [r0]
-	adds r1, r6
-	ldrb r2, [r1, 0x1]
-	adds r0, r4, 0
-	ands r0, r2
-	mov r2, r8
-	orrs r0, r2
-	strb r0, [r1, 0x1]
-	movs r1, 0x50
-	negs r1, r1
-	mov r0, r9
-	movs r2, 0x44
-	movs r3, 0
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r2, r0, 24
-	lsls r0, r2, 4
-	adds r0, r2
-	lsls r0, 2
-	adds r5, r0, r5
-	mov r1, r10
-	str r1, [r5]
-	adds r0, r6
-	ldrb r1, [r0, 0x1]
-	ands r4, r1
-	mov r2, r8
-	orrs r4, r2
-	strb r4, [r0, 0x1]
-_080AA766:
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end title_screen_add_logo_shine_obj
-
-	thumb_func_start title_screen_vblank_callback
-@ void title_screen_vblank_callback()
-title_screen_vblank_callback: @ 80AA780
-	push {lr}
-	bl ScanlineEffect_InitHBlankDmaTransfer
-	bl LoadOam
-	bl ProcessSpriteCopyRequests
-	bl TransferPlttBuffer
-	ldr r0, =gBattle_BG1_Y
-	ldrh r1, [r0]
-	movs r0, 0x16
-	bl SetGpuReg
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end title_screen_vblank_callback
-
-	thumb_func_start c2_title_screen_1
-@ void c2_title_screen_1()
-c2_title_screen_1: @ 80AA7A4
-	push {r4,lr}
-	sub sp, 0x14
-	ldr r0, =gMain
-	movs r1, 0x87
-	lsls r1, 3
-	adds r0, r1
-	ldrb r0, [r0]
-	cmp r0, 0x5
-	bhi _080AA7E0
-	lsls r0, 2
-	ldr r1, =_080AA7C8
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.pool
-	.align 2, 0
-_080AA7C8:
-	.4byte _080AA7E0
-	.4byte _080AA8C4
-	.4byte _080AA998
-	.4byte _080AA9E0
-	.4byte _080AAA14
-	.4byte _080AAAF0
-_080AA7E0:
-	movs r0, 0
-	bl SetVBlankCallback
-	movs r0, 0x50
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x52
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x54
-	movs r1, 0
-	bl SetGpuReg
-	movs r1, 0xA0
-	lsls r1, 19
-	ldr r2, =0x00007fff
-	adds r0, r2, 0
-	strh r0, [r1]
-	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
-	add r1, sp, 0xC
-	movs r0, 0
-	strh r0, [r1]
-	ldr r1, =0x040000d4
-	add r0, sp, 0xC
-	str r0, [r1]
-	movs r0, 0xC0
-	lsls r0, 19
-	str r0, [r1, 0x4]
-	ldr r0, =0x8100c000
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	movs r2, 0
-	str r2, [sp, 0x10]
-	add r0, sp, 0x10
-	str r0, [r1]
-	movs r0, 0xE0
-	lsls r0, 19
-	str r0, [r1, 0x4]
-	ldr r0, =0x85000100
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	add r0, sp, 0xC
-	strh r2, [r0]
-	str r0, [r1]
-	ldr r0, =0x05000002
-	str r0, [r1, 0x4]
-	ldr r0, =0x810001ff
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	bl ResetPaletteFade
-	ldr r0, =gMain
-	movs r1, 0x87
-	lsls r1, 3
-	adds r0, r1
-	movs r1, 0x1
-	strb r1, [r0]
-	b _080AAB1E
-	.pool
-_080AA8C4:
-	ldr r0, =gTitleScreenPokemonLogoGfx
-	movs r1, 0xC0
-	lsls r1, 19
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_08DE0644
-	ldr r1, =0x06004800
-	bl LZ77UnCompVram
-	ldr r0, =gTitleScreenBgPalettes
-	movs r2, 0xF0
-	lsls r2, 1
-	movs r1, 0
-	bl LoadPalette
-	ldr r0, =gTitleScreenRayquazaGfx
-	ldr r1, =0x06008000
-	bl LZ77UnCompVram
-	ldr r0, =gTitleScreenRayquazaTilemap
-	ldr r1, =0x0600d000
-	bl LZ77UnCompVram
-	ldr r0, =gTitleScreenCloudsGfx
-	ldr r1, =0x0600c000
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_08DDE458
-	ldr r1, =0x0600d800
-	bl LZ77UnCompVram
-	bl ScanlineEffect_Stop
-	bl ResetTasks
-	bl ResetSpriteData
-	bl FreeAllSpritePalettes
-	ldr r1, =gReservedSpritePaletteCount
-	movs r0, 0x9
-	strb r0, [r1]
-	ldr r0, =gUnknown_08540048
-	bl LoadCompressedObjectPic
-	ldr r0, =gUnknown_085400F0
-	bl LoadCompressedObjectPic
-	ldr r0, =gUnknown_0854013C
-	bl LoadCompressedObjectPic
-	ldr r0, =gTitleScreenEmeraldVersionPal
-	movs r1, 0x80
-	lsls r1, 1
-	movs r2, 0x20
-	bl LoadPalette
-	ldr r0, =gUnknown_08540100
-	bl LoadSpritePalette
-	ldr r0, =gMain
-	movs r2, 0x87
-	lsls r2, 3
-	adds r0, r2
-	movs r1, 0x2
-	strb r1, [r0]
-	b _080AAB1E
-	.pool
-_080AA998:
-	ldr r0, =task_title_screen_1
-	movs r1, 0
-	bl CreateTask
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, =gTasks
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	adds r1, r2
-	movs r2, 0
-	movs r0, 0x80
-	lsls r0, 1
-	strh r0, [r1, 0x8]
-	strh r2, [r1, 0xA]
-	ldr r0, =0x0000fff0
-	strh r0, [r1, 0xC]
-	subs r0, 0x10
-	strh r0, [r1, 0xE]
-	ldr r0, =gMain
-	movs r1, 0x87
-	lsls r1, 3
-	adds r0, r1
-	movs r1, 0x3
-	strb r1, [r0]
-	b _080AAB1E
-	.pool
-_080AA9E0:
-	movs r0, 0x1
-	negs r0, r0
-	ldr r1, =0x0000ffff
-	str r1, [sp]
-	movs r1, 0x1
-	movs r2, 0x10
-	movs r3, 0
-	bl BeginNormalPaletteFade
-	ldr r0, =title_screen_vblank_callback
-	bl SetVBlankCallback
-	ldr r0, =gMain
-	movs r2, 0x87
-	lsls r2, 3
-	adds r0, r2
-	movs r1, 0x4
-	strb r1, [r0]
-	b _080AAB1E
-	.pool
-_080AAA14:
-	movs r2, 0x80
-	lsls r2, 1
-	movs r0, 0x78
-	movs r1, 0x50
-	movs r3, 0
-	bl sub_816F2A8
-	movs r1, 0xE3
-	lsls r1, 8
-	movs r0, 0x28
-	bl SetGpuReg
-	ldr r4, =0x0000ffff
-	movs r0, 0x2A
-	adds r1, r4, 0
-	bl SetGpuReg
-	movs r1, 0xE0
-	lsls r1, 8
-	movs r0, 0x2C
-	bl SetGpuReg
-	movs r0, 0x2E
-	adds r1, r4, 0
-	bl SetGpuReg
-	movs r0, 0x40
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x44
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x42
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x46
-	movs r1, 0
-	bl SetGpuReg
-	ldr r1, =0x00001f1f
-	movs r0, 0x48
-	bl SetGpuReg
-	ldr r1, =0x00003f1f
-	movs r0, 0x4A
-	bl SetGpuReg
-	movs r0, 0x50
-	movs r1, 0x84
-	bl SetGpuReg
-	movs r0, 0x52
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x54
-	movs r1, 0xC
-	bl SetGpuReg
-	ldr r1, =0x00001a0b
-	movs r0, 0x8
-	bl SetGpuReg
-	ldr r1, =0x00001b0e
-	movs r0, 0xA
-	bl SetGpuReg
-	ldr r1, =0x00004981
-	movs r0, 0xC
-	bl SetGpuReg
-	movs r0, 0x1
-	bl EnableInterrupts
-	ldr r1, =0x0000b441
-	movs r0, 0
-	bl SetGpuReg
-	ldr r0, =0x0000019d
-	bl m4aSongNumStart
-	ldr r0, =gMain
-	movs r1, 0x87
-	lsls r1, 3
-	adds r0, r1
-	movs r1, 0x5
-	strb r1, [r0]
-	b _080AAB1E
-	.pool
-_080AAAF0:
-	bl UpdatePaletteFade
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, 0
-	bne _080AAB1E
-	movs r0, 0
-	bl title_screen_add_logo_shine_obj
-	str r4, [sp]
-	movs r0, 0x4
-	str r0, [sp, 0x4]
-	movs r0, 0x1
-	str r0, [sp, 0x8]
-	movs r0, 0
-	movs r1, 0xA0
-	movs r2, 0x4
-	movs r3, 0x4
-	bl ScanlineEffect_InitWave
-	ldr r0, =c2_title_screen_2
-	bl SetMainCallback2
-_080AAB1E:
-	add sp, 0x14
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end c2_title_screen_1
-
-	thumb_func_start c2_title_screen_2
-@ void c2_title_screen_2()
-c2_title_screen_2: @ 80AAB2C
-	push {lr}
-	bl RunTasks
-	bl AnimateSprites
-	bl BuildOamBuffer
-	bl UpdatePaletteFade
-	pop {r0}
-	bx r0
-	thumb_func_end c2_title_screen_2
-
-	thumb_func_start task_title_screen_1
-@ void task_title_screen_1(int task_id)
-task_title_screen_1: @ 80AAB44
-	push {r4-r6,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	ldr r0, =gMain
-	ldrh r1, [r0, 0x2E]
-	movs r0, 0xF
-	ands r0, r1
-	ldr r6, =gTasks
-	cmp r0, 0
-	bne _080AAB6A
-	lsls r0, r5, 2
-	adds r1, r0, r5
-	lsls r1, 3
-	adds r1, r6
-	movs r2, 0xA
-	ldrsh r1, [r1, r2]
-	adds r4, r0, 0
-	cmp r1, 0
-	beq _080AAB7C
-_080AAB6A:
-	lsls r3, r5, 2
-	adds r0, r3, r5
-	lsls r0, 3
-	adds r0, r6
-	movs r2, 0
-	movs r1, 0x1
-	strh r1, [r0, 0xA]
-	strh r2, [r0, 0x8]
-	adds r4, r3, 0
-_080AAB7C:
-	adds r0, r4, r5
-	lsls r0, 3
-	adds r6, r0, r6
-	movs r1, 0x8
-	ldrsh r0, [r6, r1]
-	cmp r0, 0
-	beq _080AABC0
-	ldrh r0, [r6, 0x8]
-	cmp r0, 0xB0
-	bne _080AABA0
-	movs r0, 0x1
-	bl title_screen_add_logo_shine_obj
-	b _080AABAA
-	.pool
-_080AABA0:
-	cmp r0, 0x40
-	bne _080AABAA
-	movs r0, 0x2
-	bl title_screen_add_logo_shine_obj
-_080AABAA:
-	ldr r0, =gTasks
-	adds r1, r4, r5
-	lsls r1, 3
-	adds r1, r0
-	ldrh r0, [r1, 0x8]
-	subs r0, 0x1
-	strh r0, [r1, 0x8]
-	b _080AAC32
-	.pool
-_080AABC0:
-	ldr r1, =0x00001441
-	movs r0, 0
-	bl SetGpuReg
-	movs r0, 0x48
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x4A
-	movs r1, 0
-	bl SetGpuReg
-	ldr r1, =0x00003f50
-	movs r0, 0x50
-	bl SetGpuReg
-	movs r0, 0x52
-	movs r1, 0x10
-	bl SetGpuReg
-	movs r0, 0x54
-	movs r1, 0
-	bl SetGpuReg
-	ldr r0, =gUnknown_08540018
-	movs r1, 0x62
-	movs r2, 0x2
-	movs r3, 0
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r4, =gSprites
-	lsls r1, r0, 4
-	adds r1, r0
-	lsls r1, 2
-	adds r1, r4
-	movs r0, 0x40
-	strh r0, [r1, 0x2E]
-	strh r5, [r1, 0x30]
-	ldr r0, =gUnknown_08540030
-	movs r1, 0xA2
-	movs r2, 0x2
-	movs r3, 0
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 4
-	adds r1, r0
-	lsls r1, 2
-	adds r1, r4
-	strh r5, [r1, 0x30]
-	movs r0, 0x90
-	strh r0, [r6, 0x8]
-	ldr r0, =task_title_screen_2
-	str r0, [r6]
-_080AAC32:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end task_title_screen_1
-
-	thumb_func_start task_title_screen_2
-@ void task_title_screen_2(int task_id)
-task_title_screen_2: @ 80AAC50
-	push {r4-r7,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, =gMain
-	ldrh r1, [r0, 0x2E]
-	movs r0, 0xF
-	ands r0, r1
-	ldr r2, =gTasks
-	cmp r0, 0
-	bne _080AAC76
-	lsls r0, r4, 2
-	adds r1, r0, r4
-	lsls r1, 3
-	adds r1, r2
-	movs r3, 0xA
-	ldrsh r1, [r1, r3]
-	adds r6, r0, 0
-	cmp r1, 0
-	beq _080AAC88
-_080AAC76:
-	lsls r3, r4, 2
-	adds r0, r3, r4
-	lsls r0, 3
-	adds r0, r2
-	movs r2, 0
-	movs r1, 0x1
-	strh r1, [r0, 0xA]
-	strh r2, [r0, 0x8]
-	adds r6, r3, 0
-_080AAC88:
-	ldr r1, =gTasks
-	adds r0, r6, r4
-	lsls r0, 3
-	adds r5, r0, r1
-	ldrh r0, [r5, 0x8]
-	movs r1, 0x8
-	ldrsh r7, [r5, r1]
-	cmp r7, 0
-	beq _080AACA8
-	subs r0, 0x1
-	strh r0, [r5, 0x8]
-	b _080AACE2
-	.pool
-_080AACA8:
-	movs r0, 0x1
-	strh r0, [r5, 0xA]
-	ldr r1, =0x00002142
-	movs r0, 0x50
-	bl SetGpuReg
-	ldr r1, =0x00000f06
-	movs r0, 0x52
-	bl SetGpuReg
-	movs r0, 0x54
-	movs r1, 0
-	bl SetGpuReg
-	ldr r1, =0x00001741
-	movs r0, 0
-	bl SetGpuReg
-	movs r0, 0x80
-	movs r1, 0x6C
-	bl sub_80AA4EC
-	movs r0, 0x80
-	movs r1, 0x94
-	bl sub_80AA548
-	strh r7, [r5, 0x10]
-	ldr r0, =task_title_screen_3
-	str r0, [r5]
-_080AACE2:
-	ldr r2, =gTasks
-	adds r0, r6, r4
-	lsls r0, 3
-	adds r3, r0, r2
-	ldrh r1, [r3, 0x8]
-	movs r0, 0x3
-	ands r0, r1
-	cmp r0, 0
-	bne _080AAD02
-	ldrh r1, [r3, 0xC]
-	movs r5, 0xC
-	ldrsh r0, [r3, r5]
-	cmp r0, 0
-	beq _080AAD02
-	adds r0, r1, 0x1
-	strh r0, [r3, 0xC]
-_080AAD02:
-	adds r0, r6, r4
-	lsls r0, 3
-	adds r3, r0, r2
-	ldrh r1, [r3, 0x8]
-	movs r0, 0x1
-	ands r0, r1
-	cmp r0, 0
-	bne _080AAD20
-	ldrh r1, [r3, 0xE]
-	movs r5, 0xE
-	ldrsh r0, [r3, r5]
-	cmp r0, 0
-	beq _080AAD20
-	adds r0, r1, 0x1
-	strh r0, [r3, 0xE]
-_080AAD20:
-	adds r4, r6, r4
-	lsls r4, 3
-	adds r4, r2
-	movs r0, 0xE
-	ldrsh r1, [r4, r0]
-	lsls r5, r1, 8
-	lsls r1, 24
-	lsrs r1, 16
-	movs r0, 0x2C
-	bl SetGpuReg
-	lsrs r5, 16
-	movs r0, 0x2E
-	adds r1, r5, 0
-	bl SetGpuReg
-	movs r0, 0xF
-	strh r0, [r4, 0x12]
-	movs r0, 0x6
-	strh r0, [r4, 0x14]
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end task_title_screen_2
-
-	thumb_func_start task_title_screen_3
-@ void task_title_screen_3(int task_id)
-task_title_screen_3: @ 80AAD64
-	push {r4,r5,lr}
-	sub sp, 0x4
-	lsls r0, 24
-	lsrs r5, r0, 24
-	ldr r2, =gMain
-	ldrh r1, [r2, 0x2E]
-	movs r0, 0x1
-	ands r0, r1
-	cmp r0, 0
-	bne _080AAD84
-	movs r0, 0x8
-	ands r0, r1
-	lsls r0, 16
-	lsrs r4, r0, 16
-	cmp r4, 0
-	beq _080AADB0
-_080AAD84:
-	movs r0, 0x4
-	bl FadeOutBGM
-	movs r0, 0x1
-	negs r0, r0
-	ldr r1, =0x0000ffff
-	str r1, [sp]
-	movs r1, 0
-	movs r2, 0
-	movs r3, 0x10
-	bl BeginNormalPaletteFade
-	ldr r0, =Cb2_GoToMainMenu
-	bl SetMainCallback2
-	b _080AAE98
-	.pool
-_080AADB0:
-	ldrh r1, [r2, 0x2C]
-	movs r0, 0x46
-	ands r0, r1
-	cmp r0, 0x46
-	bne _080AADC8
-	ldr r0, =c2_clear_save_data_screen_1
-	bl SetMainCallback2
-	b _080AAE98
-	.pool
-_080AADC8:
-	movs r0, 0x26
-	ands r0, r1
-	cmp r0, 0x26
-	bne _080AADFC
-	bl CanResetRTC
-	cmp r0, 0x1
-	bne _080AADFC
-	movs r0, 0x4
-	bl FadeOutBGM
-	movs r0, 0x1
-	negs r0, r0
-	str r4, [sp]
-	movs r1, 0
-	movs r2, 0
-	movs r3, 0x10
-	bl BeginNormalPaletteFade
-	ldr r0, =c2_reset_rtc_screen_1
-	bl SetMainCallback2
-	b _080AAE98
-	.pool
-_080AADFC:
-	ldr r0, =gMain
-	ldrh r1, [r0, 0x2C]
-	movs r0, 0x6
-	ands r0, r1
-	cmp r0, 0x6
-	bne _080AAE30
-	movs r0, 0x4
-	bl FadeOutBGM
-	movs r0, 0x1
-	negs r0, r0
-	movs r1, 0
-	str r1, [sp]
-	movs r2, 0
-	movs r3, 0x10
-	bl BeginNormalPaletteFade
-	ldr r0, =c2_berry_program_update_screen_1
-	bl SetMainCallback2
-	b _080AAE98
-	.pool
-_080AAE30:
-	movs r0, 0x2C
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x2E
-	movs r1, 0
-	bl SetGpuReg
-	ldr r1, =gTasks
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	adds r3, r0, r1
-	ldrh r0, [r3, 0x8]
-	adds r0, 0x1
-	strh r0, [r3, 0x8]
-	movs r1, 0x1
-	ands r0, r1
-	cmp r0, 0
-	beq _080AAE72
-	ldrh r0, [r3, 0x10]
-	adds r0, 0x1
-	strh r0, [r3, 0x10]
-	ldr r2, =gBattle_BG1_Y
-	movs r1, 0x10
-	ldrsh r0, [r3, r1]
-	lsrs r1, r0, 31
-	adds r0, r1
-	asrs r0, 1
-	strh r0, [r2]
-	ldr r1, =gBattle_BG1_X
-	movs r0, 0
-	strh r0, [r1]
-_080AAE72:
-	ldrb r0, [r3, 0x8]
-	bl title_screen_update_rayquaza_ring_palette
-	ldr r0, =gMPlayInfo_BGM
-	ldr r1, =0x0000ffff
-	ldrh r0, [r0, 0x4]
-	cmp r0, 0
-	bne _080AAE98
-	movs r0, 0x1
-	negs r0, r0
-	str r1, [sp]
-	movs r1, 0
-	movs r2, 0
-	movs r3, 0x10
-	bl BeginNormalPaletteFade
-	ldr r0, =c2_show_copyright_and_intro_again_1
-	bl SetMainCallback2
-_080AAE98:
-	add sp, 0x4
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end task_title_screen_3
-
-	thumb_func_start Cb2_GoToMainMenu
-Cb2_GoToMainMenu: @ 80AAEB8
-	push {lr}
-	bl UpdatePaletteFade
-	lsls r0, 24
-	cmp r0, 0
-	bne _080AAECA
-	ldr r0, =CB2_InitMainMenu
-	bl SetMainCallback2
-_080AAECA:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end Cb2_GoToMainMenu
-
-	thumb_func_start c2_show_copyright_and_intro_again_1
-c2_show_copyright_and_intro_again_1: @ 80AAED4
-	push {lr}
-	bl UpdatePaletteFade
-	lsls r0, 24
-	cmp r0, 0
-	bne _080AAEE6
-	ldr r0, =c2_show_copyright_and_intro_again_2
-	bl SetMainCallback2
-_080AAEE6:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end c2_show_copyright_and_intro_again_1
-
-	thumb_func_start c2_clear_save_data_screen_1
-c2_clear_save_data_screen_1: @ 80AAEF0
-	push {lr}
-	bl UpdatePaletteFade
-	lsls r0, 24
-	cmp r0, 0
-	bne _080AAF02
-	ldr r0, =CB2_InitClearSaveDataScreen
-	bl SetMainCallback2
-_080AAF02:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end c2_clear_save_data_screen_1
-
-	thumb_func_start c2_reset_rtc_screen_1
-c2_reset_rtc_screen_1: @ 80AAF0C
-	push {lr}
-	bl UpdatePaletteFade
-	lsls r0, 24
-	cmp r0, 0
-	bne _080AAF1E
-	ldr r0, =sub_809EF88
-	bl SetMainCallback2
-_080AAF1E:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end c2_reset_rtc_screen_1
-
-	thumb_func_start c2_berry_program_update_screen_1
-c2_berry_program_update_screen_1: @ 80AAF28
-	push {lr}
-	bl UpdatePaletteFade
-	lsls r0, 24
-	cmp r0, 0
-	bne _080AAF3E
-	bl m4aMPlayAllStop
-	ldr r0, =InitBerryFixProgram
-	bl SetMainCallback2
-_080AAF3E:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end c2_berry_program_update_screen_1
-
-	thumb_func_start title_screen_update_rayquaza_ring_palette
-@ void title_screen_update_rayquaza_ring_palette(u8 a1)
-title_screen_update_rayquaza_ring_palette: @ 80AAF48
-	push {lr}
-	sub sp, 0x4
-	lsls r0, 24
-	lsrs r1, r0, 24
-	movs r0, 0x3
-	ands r0, r1
-	cmp r0, 0
-	bne _080AAF9C
-	adds r0, r1, 0
-	movs r1, 0x80
-	bl Cos
-	lsls r0, 16
-	asrs r0, 16
-	adds r2, r0, 0
-	adds r2, 0x80
-	lsls r0, r2, 5
-	subs r0, r2
-	cmp r0, 0
-	bge _080AAF72
-	adds r0, 0xFF
-_080AAF72:
-	asrs r0, 8
-	movs r3, 0x1F
-	subs r1, r3, r0
-	movs r0, 0x16
-	muls r0, r2
-	cmp r0, 0
-	bge _080AAF82
-	adds r0, 0xFF
-_080AAF82:
-	asrs r0, 8
-	subs r0, r3, r0
-	lsls r0, 5
-	orrs r1, r0
-	movs r0, 0xC0
-	lsls r0, 6
-	orrs r1, r0
-	mov r0, sp
-	strh r1, [r0]
-	movs r1, 0xEF
-	movs r2, 0x2
-	bl LoadPalette
-_080AAF9C:
-	add sp, 0x4
-	pop {r0}
-	bx r0
-	thumb_func_end title_screen_update_rayquaza_ring_palette
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/data/title_screen.s b/data/title_screen.s
deleted file mode 100644
index b07464ce9..000000000
--- a/data/title_screen.s
+++ /dev/null
@@ -1,163 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.section .rodata
-	.align 2, 0
-
-	.incbin "graphics/title_screen/unk_853EF78.gbapal"
-
-	.align 2
-gTitleScreenRayquazaGfx:: @ 853F058
-	.incbin "graphics/title_screen/rayquaza.4bpp.lz"
-
-	.align 2
-gTitleScreenRayquazaTilemap:: @ 853F83C
-	.incbin "graphics/title_screen/rayquaza.bin.lz"
-
-	.align 2
-gTitleScreenLogoShineGfx:: @ 853FB3C
-	.incbin "graphics/title_screen/logo_shine.4bpp.lz"
-
-	.align 2
-gTitleScreenCloudsGfx:: @ 853FC8C
-	.incbin "graphics/title_screen/clouds.4bpp.lz"
-
-	.align 2
-gUnknown_0853FF70:: @ 853FF70
-	.2byte 0x0010, 0x0110, 0x0210, 0x0310, 0x0410, 0x0510, 0x0610, 0x0710
-	.2byte 0x0810, 0x0910, 0x0a10, 0x0b10, 0x0c10, 0x0d10, 0x0e10, 0x0f10
-	.2byte 0x100f, 0x100e, 0x100d, 0x100c, 0x100b, 0x100a, 0x1009, 0x1008
-	.2byte 0x1007, 0x1006, 0x1005, 0x1004, 0x1003, 0x1002, 0x1001, 0x1000
-	.2byte 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000
-	.2byte 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000
-	.2byte 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000
-	.2byte 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000
-
-	.align 2
-gUnknown_0853FFF0:: @ 853FFF0
-	.byte 0xa0, 0x60, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x00
-
-	.align 2
-gUnknown_0853FFF8:: @ 853FFF8
-	.byte 0xa0, 0x60, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x00
-
-	.align 2
-gUnknown_08540000:: @ 8540000
-	.2byte 0x0000, 0x001e, 0xffff, 0x0000
-
-	.align 2
-gUnknown_08540008:: @ 8540008
-	.2byte 0x0040, 0x001e, 0xffff, 0x0000
-
-	.align 2
-gUnknown_08540010:: @ 8540010
-	.4byte gUnknown_08540000
-
-	.align 2
-gUnknown_08540014:: @ 8540014
-	.4byte gUnknown_08540008
-
-	.align 2
-gUnknown_08540018:: @ 8540018
-	spr_template 0x03e8, 0x03e8, gUnknown_0853FFF0, gUnknown_08540010, NULL, gDummySpriteAffineAnimTable, sub_80AA40C
-
-	.align 2
-gUnknown_08540030:: @ 8540030
-	spr_template 0x03e8, 0x03e8, gUnknown_0853FFF8, gUnknown_08540014, NULL, gDummySpriteAffineAnimTable, sub_80AA474
-
-	.align 2
-gUnknown_08540048:: @ 8540048
-	obj_tiles gTitleScreenEmeraldVersionGfx, 0x1000, 0x03e8
-	null_obj_tiles
-
-	.align 2
-gUnknown_08540058:: @ 8540058
-	.byte 0xa0, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00
-
-	.align 2
-gUnknown_08540060:: @ 8540060
-	.2byte 0x0001, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_08540068:: @ 8540068
-	.2byte 0x0005, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_08540070:: @ 8540070
-	.2byte 0x0009, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_08540078:: @ 8540078
-	.2byte 0x000d, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_08540080:: @ 8540080
-	.2byte 0x0011, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_08540088:: @ 8540088
-	.2byte 0x0015, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_08540090:: @ 8540090
-	.2byte 0x0019, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_08540098:: @ 8540098
-	.2byte 0x001d, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_085400A0:: @ 85400A0
-	.2byte 0x0021, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_085400A8:: @ 85400A8
-	.2byte 0x0025, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_085400B0:: @ 85400B0
-	.4byte gUnknown_08540060
-	.4byte gUnknown_08540068
-	.4byte gUnknown_08540070
-	.4byte gUnknown_08540078
-	.4byte gUnknown_08540080
-	.4byte gUnknown_08540088
-	.4byte gUnknown_08540090
-	.4byte gUnknown_08540098
-	.4byte gUnknown_085400A0
-	.4byte gUnknown_085400A8
-
-	.align 2
-gUnknown_085400D8:: @ 85400D8
-	spr_template 0x03e9, 0x03e9, gUnknown_08540058, gUnknown_085400B0, NULL, gDummySpriteAffineAnimTable, sub_80AA4B4
-
-	.align 2
-gUnknown_085400F0:: @ 85400F0
-	obj_tiles gTitleScreenPressStartGfx, 0x0520, 0x03e9
-	null_obj_tiles
-
-	.align 2
-gUnknown_08540100:: @ 8540100
-	obj_pal gTitleScreenPressStartPal, 0x03e9
-	null_obj_pal
-
-	.align 2
-gUnknown_08540110:: @ 8540110
-	.byte 0xa0, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x00
-
-	.align 2
-gUnknown_08540118:: @ 8540118
-	.2byte 0x0000, 0x0004, 0xffff, 0x0000
-
-	.align 2
-gUnknown_08540120:: @ 8540120
-	.4byte gUnknown_08540118
-
-	.align 2
-gUnknown_08540124:: @ 8540124
-	spr_template 0x03ea, 0x03e9, gUnknown_08540110, gUnknown_08540120, NULL, gDummySpriteAffineAnimTable, title_screen_logo_shine_obj_callback_type1
-
-	.align 2
-gUnknown_0854013C:: @ 854013C
-	obj_tiles gTitleScreenLogoShineGfx, 0x0800, 0x03ea
-	null_obj_tiles
diff --git a/include/berry_fix_program.h b/include/berry_fix_program.h
new file mode 100644
index 000000000..6c31a0c8b
--- /dev/null
+++ b/include/berry_fix_program.h
@@ -0,0 +1,6 @@
+#ifndef GUARD_BERRY_FIX_PROGRAM_H
+#define GUARD_BERRY_FIX_PROGRAM_H
+
+void CB2_InitBerryFixProgram(void);
+
+#endif // GUARD_BERRY_FIX_PROGRAM_H
diff --git a/include/clear_save_data_menu.h b/include/clear_save_data_menu.h
new file mode 100644
index 000000000..86ba99849
--- /dev/null
+++ b/include/clear_save_data_menu.h
@@ -0,0 +1,6 @@
+#ifndef GUARD_CLEAR_SAVE_DATA_MENU_H
+#define GUARD_CLEAR_SAVE_DATA_MENU_H
+
+void CB2_InitClearSaveDataScreen(void);
+
+#endif // GUARD_CLEAR_SAVE_DATA_MENU_H
diff --git a/include/constants/rgb.h b/include/constants/rgb.h
index 2c22df32a..8b323799f 100644
--- a/include/constants/rgb.h
+++ b/include/constants/rgb.h
@@ -2,6 +2,7 @@
 #define GUARD_RGB_H
 
 #define RGB(r, g, b) ((r) | ((g) << 5) | ((b) << 10))
+#define _RGB(r, g, b) ((((b) & 0x1F) << 10) + (((g) & 0x1F) << 5) + ((r) & 0x1F))
 
 #define RGB_BLACK RGB(0, 0, 0)
 #define RGB_WHITE RGB(31, 31, 31)
diff --git a/include/intro.h b/include/intro.h
new file mode 100644
index 000000000..53a446418
--- /dev/null
+++ b/include/intro.h
@@ -0,0 +1,8 @@
+#ifndef GUARD_INTRO_H
+#define GUARD_INTRO_H
+
+void CB2_InitCopyrightScreenAfterBootup(void);
+void CB2_InitCopyrightScreenAfterTitleScreen(void);
+void sub_816F2A8(u16, u16, u16, u16);
+
+#endif // GUARD_INTRO_H
diff --git a/include/main_menu.h b/include/main_menu.h
new file mode 100644
index 000000000..08cd913dc
--- /dev/null
+++ b/include/main_menu.h
@@ -0,0 +1,6 @@
+#ifndef GUARD_MAIN_MENU_H
+#define GUARD_MAIN_MENU_H
+
+void CB2_InitMainMenu(void);
+
+#endif // GUARD_MAIN_MENU_H
diff --git a/include/reset_rtc_screen.h b/include/reset_rtc_screen.h
new file mode 100644
index 000000000..5807dec99
--- /dev/null
+++ b/include/reset_rtc_screen.h
@@ -0,0 +1,6 @@
+#ifndef GUARD_RESET_RTC_SCREEN_H
+#define GUARD_RESET_RTC_SCREEN_H
+
+void CB2_InitResetRtcScreen(void);
+
+#endif // GUARD_RESET_RTC_SCREEN_H
diff --git a/include/title_screen.h b/include/title_screen.h
new file mode 100644
index 000000000..b660792fc
--- /dev/null
+++ b/include/title_screen.h
@@ -0,0 +1,8 @@
+#ifndef GUARD_TITLE_SCREEN_H
+#define GUARD_TITLE_SCREEN_H
+
+extern const u16 gUnknown_0853FF70[];
+
+void CB2_InitTitleScreen(void);
+
+#endif // GUARD_TITLE_SCREEN_H
diff --git a/ld_script.txt b/ld_script.txt
index 345afb27f..3327dcb17 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -119,7 +119,7 @@ SECTIONS {
         src/task.o(.text);
         src/reshow_battle_screen.o(.text);
         asm/battle_anim_80A9C70.o(.text);
-        asm/title_screen.o(.text);
+        src/title_screen.o(.text);
         asm/field_screen.o(.text);
         src/battle_setup.o(.text);
         asm/cable_club.o(.text);
@@ -419,7 +419,7 @@ SECTIONS {
         data/rom_8525F58.o(.rodata);
         data/map_events.o(.rodata);
         data/battle_anim_80A9C70.o(.rodata);
-        data/title_screen.o(.rodata);
+        src/title_screen.o(.rodata);
         data/field_screen.o(.rodata);
         src/battle_setup.o(.rodata);
         data/cable_club.o(.rodata);
diff --git a/src/berry_fix_program.c b/src/berry_fix_program.c
index 7b968a221..8b1cd6a37 100644
--- a/src/berry_fix_program.c
+++ b/src/berry_fix_program.c
@@ -133,7 +133,7 @@ extern const u8 gMultiBootProgram_BerryGlitchFix_End[];
 
 // .text
 
-void InitBerryFixProgram(void)
+void CB2_InitBerryFixProgram(void)
 {
     DisableInterrupts(0xFFFF);
     EnableInterrupts(0x0001);
diff --git a/src/title_screen.c b/src/title_screen.c
new file mode 100644
index 000000000..4e25c8152
--- /dev/null
+++ b/src/title_screen.c
@@ -0,0 +1,783 @@
+#include "global.h"
+#include "title_screen.h"
+#include "sprite.h"
+#include "gba/m4a_internal.h"
+#include "clear_save_data_menu.h"
+#include "decompress.h"
+#include "event_data.h"
+#include "intro.h"
+#include "m4a.h"
+#include "main.h"
+#include "main_menu.h"
+#include "palette.h"
+#include "reset_rtc_screen.h"
+#include "berry_fix_program.h"
+#include "sound.h"
+#include "sprite.h"
+#include "task.h"
+#include "scanline_effect.h"
+#include "gpu_regs.h"
+#include "trig.h"
+#include "constants/rgb.h"
+
+#define VERSION_BANNER_SHAPE 1
+#define VERSION_BANNER_RIGHT_TILEOFFSET 64
+#define VERSION_BANNER_BYTES 0x1000
+#define VERSION_BANNER_LEFT_X 98
+#define VERSION_BANNER_RIGHT_X 162
+#define VERSION_BANNER_Y 2
+#define VERSION_BANNER_Y_GOAL 66
+#define START_BANNER_X 128
+
+#define CLEAR_SAVE_BUTTON_COMBO (B_BUTTON | SELECT_BUTTON | DPAD_UP)
+#define RESET_RTC_BUTTON_COMBO (B_BUTTON | SELECT_BUTTON | DPAD_LEFT)
+#define BERRY_UPDATE_BUTTON_COMBO (B_BUTTON | SELECT_BUTTON)
+#define A_B_START_SELECT (A_BUTTON | B_BUTTON | START_BUTTON | SELECT_BUTTON)
+
+extern struct MusicPlayerInfo gMPlayInfo_BGM;
+extern u16 gBattle_BG1_X;
+extern u16 gBattle_BG1_Y;
+
+extern const u8 gTitleScreenEmeraldVersionGfx[];
+extern const u8 gTitleScreenPressStartGfx[];
+extern const u8 gTitleScreenPokemonLogoGfx[];
+extern const u8 gUnknown_08DE0644[];
+extern const u8 gUnknown_08DDE458[];
+extern const u16 gTitleScreenBgPalettes[];
+extern const u16 gTitleScreenPressStartPal[];
+extern const u16 gTitleScreenEmeraldVersionPal[];
+
+// this file's functions
+static void MainCB2(void);
+static void Task_TitleScreenPhase1(u8);
+static void Task_TitleScreenPhase2(u8);
+static void Task_TitleScreenPhase3(u8);
+static void CB2_GoToMainMenu(void);
+static void CB2_GoToClearSaveDataScreen(void);
+static void CB2_GoToResetRtcScreen(void);
+static void CB2_GoToBerryFixScreen(void);
+static void CB2_GoToCopyrightScreen(void);
+static void UpdateLegendaryMarkingColor(u8);
+
+static void SpriteCB_VersionBannerLeft(struct Sprite *sprite);
+static void SpriteCB_VersionBannerRight(struct Sprite *sprite);
+static void SpriteCB_PressStartCopyrightBanner(struct Sprite *sprite);
+static void SpriteCB_PokemonLogoShine(struct Sprite *sprite);
+
+// const rom data
+static const u16 sUnusedUnknownPal[] = INCBIN_U16("graphics/title_screen/unk_853EF78.gbapal");
+
+static const u8 sTitleScreenRayquazaGfx[] = INCBIN_U8("graphics/title_screen/rayquaza.4bpp.lz");
+static const u8 sTitleScreenRayquazaTilemap[] = INCBIN_U8("graphics/title_screen/rayquaza.bin.lz");
+static const u8 sTitleScreenLogoShineGfx[] = INCBIN_U8("graphics/title_screen/logo_shine.4bpp.lz");
+static const u8 sTitleScreenCloudsGfx[] = INCBIN_U8("graphics/title_screen/clouds.4bpp.lz");
+
+const u16 gUnknown_0853FF70[] =
+{
+	0x0010, 0x0110, 0x0210, 0x0310, 0x0410, 0x0510, 0x0610, 0x0710,
+	0x0810, 0x0910, 0x0a10, 0x0b10, 0x0c10, 0x0d10, 0x0e10, 0x0f10,
+	0x100f, 0x100e, 0x100d, 0x100c, 0x100b, 0x100a, 0x1009, 0x1008,
+	0x1007, 0x1006, 0x1005, 0x1004, 0x1003, 0x1002, 0x1001, 0x1000,
+	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000,
+	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000,
+	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000,
+	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000,
+};
+
+static const struct OamData sVersionBannerLeftOamData =
+{
+    .y = 160,
+    .affineMode = 0,
+    .objMode = 0,
+    .mosaic = 0,
+    .bpp = 1,
+    .shape = VERSION_BANNER_SHAPE,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 3,
+    .tileNum = 0,
+    .priority = 0,
+    .paletteNum = 0,
+    .affineParam = 0,
+};
+
+static const struct OamData sVersionBannerRightOamData =
+{
+    .y = 160,
+    .affineMode = 0,
+    .objMode = 0,
+    .mosaic = 0,
+    .bpp = 1,
+    .shape = VERSION_BANNER_SHAPE,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 3,
+    .tileNum = 0,
+    .priority = 0,
+    .paletteNum = 0,
+    .affineParam = 0,
+};
+
+static const union AnimCmd sVersionBannerLeftAnimSequence[] =
+{
+    ANIMCMD_FRAME(0, 30),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd sVersionBannerRightAnimSequence[] =
+{
+    ANIMCMD_FRAME(VERSION_BANNER_RIGHT_TILEOFFSET, 30),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd *const sVersionBannerLeftAnimTable[] =
+{
+    sVersionBannerLeftAnimSequence,
+};
+
+static const union AnimCmd *const sVersionBannerRightAnimTable[] =
+{
+    sVersionBannerRightAnimSequence,
+};
+
+static const struct SpriteTemplate sVersionBannerLeftSpriteTemplate =
+{
+    .tileTag = 1000,
+    .paletteTag = 1000,
+    .oam = &sVersionBannerLeftOamData,
+    .anims = sVersionBannerLeftAnimTable,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = SpriteCB_VersionBannerLeft,
+};
+
+static const struct SpriteTemplate sVersionBannerRightSpriteTemplate =
+{
+    .tileTag = 1000,
+    .paletteTag = 1000,
+    .oam = &sVersionBannerRightOamData,
+    .anims = sVersionBannerRightAnimTable,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = SpriteCB_VersionBannerRight,
+};
+
+static const struct CompressedSpriteSheet sSpriteSheet_EmeraldVersion[] =
+{
+    {gTitleScreenEmeraldVersionGfx, VERSION_BANNER_BYTES, 1000},
+    {NULL},
+};
+
+static const struct OamData sOamData_CopyrightBanner =
+{
+    .y = 160,
+    .affineMode = 0,
+    .objMode = 0,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 1,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 1,
+    .tileNum = 0,
+    .priority = 0,
+    .paletteNum = 0,
+    .affineParam = 0,
+};
+
+static const union AnimCmd sCopyrightBannerAnim0[] =
+{
+    ANIMCMD_FRAME(1, 4),
+    ANIMCMD_END,
+};
+static const union AnimCmd sCopyrightBannerAnim1[] =
+{
+    ANIMCMD_FRAME(5, 4),
+    ANIMCMD_END,
+};
+static const union AnimCmd sCopyrightBannerAnim2[] =
+{
+    ANIMCMD_FRAME(9, 4),
+    ANIMCMD_END,
+};
+static const union AnimCmd sCopyrightBannerAnim3[] =
+{
+    ANIMCMD_FRAME(13, 4),
+    ANIMCMD_END,
+};
+static const union AnimCmd sCopyrightBannerAnim4[] =
+{
+    ANIMCMD_FRAME(17, 4),
+    ANIMCMD_END,
+};
+static const union AnimCmd sCopyrightBannerAnim5[] =
+{
+    ANIMCMD_FRAME(21, 4),
+    ANIMCMD_END,
+};
+static const union AnimCmd sCopyrightBannerAnim6[] =
+{
+    ANIMCMD_FRAME(25, 4),
+    ANIMCMD_END,
+};
+static const union AnimCmd sCopyrightBannerAnim7[] =
+{
+    ANIMCMD_FRAME(29, 4),
+    ANIMCMD_END,
+};
+static const union AnimCmd sCopyrightBannerAnim8[] =
+{
+    ANIMCMD_FRAME(33, 4),
+    ANIMCMD_END,
+};
+static const union AnimCmd sCopyrightBannerAnim9[] =
+{
+    ANIMCMD_FRAME(37, 4),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd *const sStartCopyrightBannerAnimTable[] =
+{
+    sCopyrightBannerAnim0,
+    sCopyrightBannerAnim1,
+    sCopyrightBannerAnim2,
+    sCopyrightBannerAnim3,
+    sCopyrightBannerAnim4,
+    sCopyrightBannerAnim5,
+    sCopyrightBannerAnim6,
+    sCopyrightBannerAnim7,
+    sCopyrightBannerAnim8,
+    sCopyrightBannerAnim9,
+};
+
+static const struct SpriteTemplate sStartCopyrightBannerSpriteTemplate =
+{
+    .tileTag = 1001,
+    .paletteTag = 1001,
+    .oam = &sOamData_CopyrightBanner,
+    .anims = sStartCopyrightBannerAnimTable,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = SpriteCB_PressStartCopyrightBanner,
+};
+
+static const struct CompressedSpriteSheet sSpriteSheet_PressStart[] =
+{
+    {gTitleScreenPressStartGfx, 0x520, 1001},
+    {NULL},
+};
+
+static const struct SpritePalette sSpritePalette_PressStart[] =
+{
+    {gTitleScreenPressStartPal, 1001},
+    {NULL},
+};
+
+static const struct OamData sPokemonLogoShineOamData =
+{
+    .y = 160,
+    .affineMode = 0,
+    .objMode = 0,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 0,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 3,
+    .tileNum = 0,
+    .priority = 0,
+    .paletteNum = 0,
+    .affineParam = 0,
+};
+
+static const union AnimCmd sPokemonLogoShineAnimSequence[] =
+{
+    ANIMCMD_FRAME(0, 4),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd *const sPokemonLogoShineAnimTable[] =
+{
+    sPokemonLogoShineAnimSequence,
+};
+
+static const struct SpriteTemplate sPokemonLogoShineSpriteTemplate =
+{
+    .tileTag = 1002,
+    .paletteTag = 1001,
+    .oam = &sPokemonLogoShineOamData,
+    .anims = sPokemonLogoShineAnimTable,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = SpriteCB_PokemonLogoShine,
+};
+
+static const struct CompressedSpriteSheet sPokemonLogoShineSpriteSheet[] =
+{
+    {sTitleScreenLogoShineGfx, 0x800, 1002},
+    {NULL},
+};
+
+// code
+static void SpriteCB_VersionBannerLeft(struct Sprite *sprite)
+{
+    if (gTasks[sprite->data[1]].data[1] != 0)
+    {
+        sprite->oam.objMode = 0;
+        sprite->pos1.y = VERSION_BANNER_Y_GOAL;
+    }
+    else
+    {
+        if (sprite->pos1.y != VERSION_BANNER_Y_GOAL)
+            sprite->pos1.y++;
+        if (sprite->data[0] != 0)
+            sprite->data[0]--;
+        SetGpuReg(REG_OFFSET_BLDALPHA, gUnknown_0853FF70[sprite->data[0]]);
+    }
+}
+
+static void SpriteCB_VersionBannerRight(struct Sprite *sprite)
+{
+    if (gTasks[sprite->data[1]].data[1] != 0)
+    {
+        sprite->oam.objMode = 0;
+        sprite->pos1.y = VERSION_BANNER_Y_GOAL;
+    }
+    else
+    {
+        if (sprite->pos1.y != VERSION_BANNER_Y_GOAL)
+            sprite->pos1.y++;
+    }
+}
+
+static void SpriteCB_PressStartCopyrightBanner(struct Sprite *sprite)
+{
+    if (sprite->data[0] == 1)
+    {
+        sprite->data[1]++;
+        // Alternate between hidden and shown every 16th frame
+        if (sprite->data[1] & 0x10)
+            sprite->invisible = FALSE;
+        else
+            sprite->invisible = TRUE;
+    }
+    else
+    {
+        sprite->invisible = FALSE;
+    }
+}
+
+static void CreatePressStartBanner(s16 x, s16 y)
+{
+    u8 i;
+    u8 spriteId;
+
+    x -= 64;
+    for (i = 0; i < 5; i++, x += 32)
+    {
+        spriteId = CreateSprite(&sStartCopyrightBannerSpriteTemplate, x, y, 0);
+        StartSpriteAnim(&gSprites[spriteId], i);
+        gSprites[spriteId].data[0] = 1;
+    }
+}
+
+static void CreateCopyrightBanner(s16 x, s16 y)
+{
+    u8 i;
+    u8 spriteId;
+
+    x -= 64;
+    for (i = 0; i < 5; i++, x += 32)
+    {
+        spriteId = CreateSprite(&sStartCopyrightBannerSpriteTemplate, x, y, 0);
+        StartSpriteAnim(&gSprites[spriteId], i + 5);
+    }
+}
+
+static void SpriteCB_PokemonLogoShine(struct Sprite *sprite)
+{
+    if (sprite->pos1.x < 272)
+    {
+        if (sprite->data[0]) // Flash background
+        {
+            u16 backgroundColor;
+
+            if (sprite->pos1.x < DISPLAY_WIDTH / 2)
+            {
+                // Brighten background color
+                if (sprite->data[1] < 31)
+                    sprite->data[1]++;
+                if (sprite->data[1] < 31)
+                    sprite->data[1]++;
+            }
+            else
+            {
+                // Darken background color
+                if (sprite->data[1] != 0)
+                    sprite->data[1]--;
+                if (sprite->data[1] != 0)
+                    sprite->data[1]--;
+            }
+
+            backgroundColor = _RGB(sprite->data[1], sprite->data[1], sprite->data[1]);
+            if (sprite->pos1.x == DISPLAY_WIDTH / 2 + 12
+                || sprite->pos1.x == DISPLAY_WIDTH / 2 + 16
+                || sprite->pos1.x == DISPLAY_WIDTH / 2 + 20
+                || sprite->pos1.x == DISPLAY_WIDTH / 2 + 24)
+                gPlttBufferFaded[0] = RGB(24, 31, 12);
+            else
+                gPlttBufferFaded[0] = backgroundColor;
+        }
+        sprite->pos1.x += 4;
+    }
+    else
+    {
+        gPlttBufferFaded[0] = RGB_BLACK;
+        DestroySprite(sprite);
+    }
+}
+
+static void SpriteCB_PokemonLogoShine2(struct Sprite *sprite)
+{
+    if (sprite->pos1.x < 272)
+        sprite->pos1.x += 8;
+    else
+        DestroySprite(sprite);
+}
+
+static void StartPokemonLogoShine(u8 flashBg)
+{
+    u8 spriteId;
+
+    switch (flashBg)
+    {
+    case 0:
+    case 2:
+        spriteId = CreateSprite(&sPokemonLogoShineSpriteTemplate, 0, 68, 0);
+        gSprites[spriteId].oam.objMode = 2;
+        gSprites[spriteId].data[0] = flashBg;
+        break;
+    case 1:
+        spriteId = CreateSprite(&sPokemonLogoShineSpriteTemplate, 0, 68, 0);
+        gSprites[spriteId].oam.objMode = 2;
+        gSprites[spriteId].data[0] = flashBg;
+        gSprites[spriteId].invisible = TRUE;
+
+        spriteId = CreateSprite(&sPokemonLogoShineSpriteTemplate, 0, 68, 0);
+        gSprites[spriteId].callback = SpriteCB_PokemonLogoShine2;
+        gSprites[spriteId].oam.objMode = 2;
+
+        spriteId = CreateSprite(&sPokemonLogoShineSpriteTemplate, -80, 68, 0);
+        gSprites[spriteId].callback = SpriteCB_PokemonLogoShine2;
+        gSprites[spriteId].oam.objMode = 2;
+        break;
+    }
+}
+
+static void VBlankCB(void)
+{
+    ScanlineEffect_InitHBlankDmaTransfer();
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+    SetGpuReg(REG_OFFSET_BG1VOFS, gBattle_BG1_Y);
+}
+
+#define tCounter data[0]
+#define tSkipToNext data[1]
+
+void CB2_InitTitleScreen(void)
+{
+    switch (gMain.state)
+    {
+    default:
+    case 0:
+        SetVBlankCallback(NULL);
+        SetGpuReg(REG_OFFSET_BLDCNT, 0);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+        SetGpuReg(REG_OFFSET_BLDY, 0);
+        *((u16 *)PLTT) = RGB_WHITE;
+        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);
+        ResetPaletteFade();
+        gMain.state = 1;
+        break;
+    case 1:
+        LZ77UnCompVram(gTitleScreenPokemonLogoGfx, (void *)VRAM);
+        LZ77UnCompVram(gUnknown_08DE0644, (void *)(VRAM + 0x4800));
+        LoadPalette(gTitleScreenBgPalettes, 0, 0x1E0);
+        LZ77UnCompVram(sTitleScreenRayquazaGfx, (void *)(VRAM + 0x8000));
+        LZ77UnCompVram(sTitleScreenRayquazaTilemap, (void *)(VRAM + 0xD000));
+        LZ77UnCompVram(sTitleScreenCloudsGfx, (void *)(VRAM + 0xC000));
+        LZ77UnCompVram(gUnknown_08DDE458, (void *)(VRAM + 0xD800));
+        ScanlineEffect_Stop();
+        ResetTasks();
+        ResetSpriteData();
+        FreeAllSpritePalettes();
+        gReservedSpritePaletteCount = 9;
+        LoadCompressedObjectPic(&sSpriteSheet_EmeraldVersion[0]);
+        LoadCompressedObjectPic(&sSpriteSheet_PressStart[0]);
+        LoadCompressedObjectPic(&sPokemonLogoShineSpriteSheet[0]);
+        LoadPalette(gTitleScreenEmeraldVersionPal, 0x100, 0x20);
+        LoadSpritePalette(&sSpritePalette_PressStart[0]);
+        gMain.state = 2;
+        break;
+    case 2:
+    {
+        u8 taskId = CreateTask(Task_TitleScreenPhase1, 0);
+
+        gTasks[taskId].tCounter = 256;
+        gTasks[taskId].tSkipToNext = FALSE;
+        gTasks[taskId].data[2] = -16;
+        gTasks[taskId].data[3] = -32;
+        gMain.state = 3;
+        break;
+    }
+    case 3:
+        BeginNormalPaletteFade(-1, 1, 0x10, 0, 0xFFFF);
+        SetVBlankCallback(VBlankCB);
+        gMain.state = 4;
+        break;
+    case 4:
+        sub_816F2A8(0x78, 0x50, 0x100, 0);
+        SetGpuReg(REG_OFFSET_BG2X_L, -29 * 256);
+        SetGpuReg(REG_OFFSET_BG2X_H, -1);
+        SetGpuReg(REG_OFFSET_BG2Y_L, -32 * 256);
+        SetGpuReg(REG_OFFSET_BG2Y_H, -1);
+        SetGpuReg(REG_OFFSET_WIN0H, 0);
+        SetGpuReg(REG_OFFSET_WIN0V, 0);
+        SetGpuReg(REG_OFFSET_WIN1H, 0);
+        SetGpuReg(REG_OFFSET_WIN1V, 0);
+        SetGpuReg(REG_OFFSET_WININ, 0x1F1F);
+        SetGpuReg(REG_OFFSET_WINOUT, 0x3F1F);
+        SetGpuReg(REG_OFFSET_BLDCNT, 0x84);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+        SetGpuReg(REG_OFFSET_BLDY, 0xC);
+        SetGpuReg(REG_OFFSET_BG0CNT, BGCNT_PRIORITY(3) | BGCNT_CHARBASE(2) | BGCNT_SCREENBASE(26) | BGCNT_16COLOR | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_BG1CNT, BGCNT_PRIORITY(2) | BGCNT_CHARBASE(3) | BGCNT_SCREENBASE(27) | BGCNT_16COLOR | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_BG2CNT, BGCNT_PRIORITY(1) | BGCNT_CHARBASE(0) | BGCNT_SCREENBASE(9) | BGCNT_256COLOR | BGCNT_AFF256x256);
+        EnableInterrupts(INTR_FLAG_VBLANK);
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_1
+                                    | DISPCNT_OBJ_1D_MAP
+                                    | DISPCNT_BG2_ON
+                                    | DISPCNT_OBJ_ON
+                                    | DISPCNT_WIN0_ON
+                                    | DISPCNT_OBJWIN_ON);
+        m4aSongNumStart(0x19D);
+        gMain.state = 5;
+        break;
+    case 5:
+        if (!UpdatePaletteFade())
+        {
+            StartPokemonLogoShine(0);
+            ScanlineEffect_InitWave(0, DISPLAY_HEIGHT, 4, 4, 0, SCANLINE_EFFECT_REG_BG1HOFS, TRUE);
+            SetMainCallback2(MainCB2);
+        }
+        break;
+    }
+}
+
+static void MainCB2(void)
+{
+    RunTasks();
+    AnimateSprites();
+    BuildOamBuffer();
+    UpdatePaletteFade();
+}
+
+// Shine the Pokemon logo two more times, and fade in the version banner
+static void Task_TitleScreenPhase1(u8 taskId)
+{
+    // Skip to next phase when A, B, Start, or Select is pressed
+    if ((gMain.newKeys & A_B_START_SELECT) || gTasks[taskId].data[1] != 0)
+    {
+        gTasks[taskId].tSkipToNext = TRUE;
+        gTasks[taskId].tCounter = 0;
+    }
+
+    if (gTasks[taskId].tCounter != 0)
+    {
+        u16 frameNum = gTasks[taskId].tCounter;
+        if (frameNum == 176)
+            StartPokemonLogoShine(1);
+        else if (frameNum == 64)
+            StartPokemonLogoShine(2);
+
+        gTasks[taskId].tCounter--;
+    }
+    else
+    {
+        u8 spriteId;
+
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_1 | DISPCNT_OBJ_1D_MAP | DISPCNT_BG2_ON | DISPCNT_OBJ_ON);
+        SetGpuReg(REG_OFFSET_WININ, 0);
+        SetGpuReg(REG_OFFSET_WINOUT, 0);
+        SetGpuReg(REG_OFFSET_BLDCNT, 0x3F50);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0x10);
+        SetGpuReg(REG_OFFSET_BLDY, 0);
+
+        // Create left side of version banner
+        spriteId = CreateSprite(&sVersionBannerLeftSpriteTemplate, VERSION_BANNER_LEFT_X, VERSION_BANNER_Y, 0);
+        gSprites[spriteId].data[0] = 64;
+        gSprites[spriteId].data[1] = taskId;
+
+        // Create right side of version banner
+        spriteId = CreateSprite(&sVersionBannerRightSpriteTemplate, VERSION_BANNER_RIGHT_X, VERSION_BANNER_Y, 0);
+        gSprites[spriteId].data[1] = taskId;
+
+        gTasks[taskId].tCounter = 144;
+        gTasks[taskId].func = Task_TitleScreenPhase2;
+    }
+}
+
+// Create "Press Start" and copyright banners, and slide Pokemon logo up
+static void Task_TitleScreenPhase2(u8 taskId)
+{
+    u32 yPos;
+
+    // Skip to next phase when A, B, Start, or Select is pressed
+    if ((gMain.newKeys & A_B_START_SELECT) || gTasks[taskId].tSkipToNext)
+    {
+        gTasks[taskId].tSkipToNext = TRUE;
+        gTasks[taskId].tCounter = 0;
+    }
+
+    if (gTasks[taskId].tCounter != 0)
+    {
+        gTasks[taskId].tCounter--;
+    }
+    else
+    {
+        gTasks[taskId].tSkipToNext = TRUE;
+        SetGpuReg(REG_OFFSET_BLDCNT, 0x2142);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0xF06);
+        SetGpuReg(REG_OFFSET_BLDY, 0);
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_1
+                                    | DISPCNT_OBJ_1D_MAP
+                                    | DISPCNT_BG0_ON
+                                    | DISPCNT_BG1_ON
+                                    | DISPCNT_BG2_ON
+                                    | DISPCNT_OBJ_ON);
+        CreatePressStartBanner(START_BANNER_X, 108);
+        CreateCopyrightBanner(START_BANNER_X, 148);
+        gTasks[taskId].data[4] = 0;
+        gTasks[taskId].func = Task_TitleScreenPhase3;
+    }
+
+    if (!(gTasks[taskId].tCounter & 3) && gTasks[taskId].data[2] != 0)
+        gTasks[taskId].data[2]++;
+    if (!(gTasks[taskId].tCounter & 1) && gTasks[taskId].data[3] != 0)
+        gTasks[taskId].data[3]++;
+
+    // Slide Pokemon logo up
+    yPos = gTasks[taskId].data[3] * 256;
+    SetGpuReg(REG_OFFSET_BG2Y_L, yPos);
+    SetGpuReg(REG_OFFSET_BG2Y_H, yPos / 0x10000);
+
+    gTasks[taskId].data[5] = 15;
+    gTasks[taskId].data[6] = 6;
+}
+
+// Show Rayquaza silhouette and process main title screen input
+static void Task_TitleScreenPhase3(u8 taskId)
+{
+    if ((gMain.newKeys & A_BUTTON) || (gMain.newKeys & START_BUTTON))
+    {
+        FadeOutBGM(4);
+        BeginNormalPaletteFade(-1, 0, 0, 0x10, 0xFFFF);
+        SetMainCallback2(CB2_GoToMainMenu);
+    }
+    else if ((gMain.heldKeys & CLEAR_SAVE_BUTTON_COMBO) == CLEAR_SAVE_BUTTON_COMBO)
+    {
+        SetMainCallback2(CB2_GoToClearSaveDataScreen);
+    }
+    else if ((gMain.heldKeys & RESET_RTC_BUTTON_COMBO) == RESET_RTC_BUTTON_COMBO
+      && CanResetRTC() == TRUE)
+    {
+        FadeOutBGM(4);
+        BeginNormalPaletteFade(-1, 0, 0, 0x10, 0);
+        SetMainCallback2(CB2_GoToResetRtcScreen);
+    }
+    else if ((gMain.heldKeys & BERRY_UPDATE_BUTTON_COMBO) == BERRY_UPDATE_BUTTON_COMBO)
+    {
+        FadeOutBGM(4);
+        BeginNormalPaletteFade(-1, 0, 0, 0x10, 0);
+        SetMainCallback2(CB2_GoToBerryFixScreen);
+    }
+    else
+    {
+        SetGpuReg(REG_OFFSET_BG2Y_L, 0);
+        SetGpuReg(REG_OFFSET_BG2Y_H, 0);
+        gTasks[taskId].tCounter++;
+        if (gTasks[taskId].tCounter & 1)
+        {
+            gTasks[taskId].data[4]++;
+            gBattle_BG1_Y = gTasks[taskId].data[4] / 2;
+            gBattle_BG1_X = 0;
+        }
+        UpdateLegendaryMarkingColor(gTasks[taskId].tCounter);
+        if ((gMPlayInfo_BGM.status & 0xFFFF) == 0)
+        {
+            BeginNormalPaletteFade(-1, 0, 0, 0x10, 0xFFFF);
+            SetMainCallback2(CB2_GoToCopyrightScreen);
+        }
+    }
+}
+
+static void CB2_GoToMainMenu(void)
+{
+    if (!UpdatePaletteFade())
+        SetMainCallback2(CB2_InitMainMenu);
+}
+
+static void CB2_GoToCopyrightScreen(void)
+{
+    if (!UpdatePaletteFade())
+        SetMainCallback2(CB2_InitCopyrightScreenAfterTitleScreen);
+}
+
+static void CB2_GoToClearSaveDataScreen(void)
+{
+    if (!UpdatePaletteFade())
+        SetMainCallback2(CB2_InitClearSaveDataScreen);
+}
+
+static void CB2_GoToResetRtcScreen(void)
+{
+    if (!UpdatePaletteFade())
+        SetMainCallback2(CB2_InitResetRtcScreen);
+}
+
+static void CB2_GoToBerryFixScreen(void)
+{
+    if (!UpdatePaletteFade())
+    {
+        m4aMPlayAllStop();
+        SetMainCallback2(CB2_InitBerryFixProgram);
+    }
+}
+
+static void UpdateLegendaryMarkingColor(u8 frameNum)
+{
+    if ((frameNum % 4) == 0) // Change color every 4th frame
+    {
+        s32 intensity = Cos(frameNum, 128) + 128;
+        s32 r = 31 - ((intensity * 32 - intensity) / 256);
+        s32 g = 31 - (intensity * 22 / 256);
+        s32 b = 12;
+
+        u16 color = RGB(r, g, b);
+        LoadPalette(&color, 0xEF, sizeof(color));
+   }
+}