Redo partial decomp of intro (force push)

6 files changed, 309 insertions, 702 deletions

diff --git a/asm/intro.s b/asm/intro.s
index 24b7bb9b6..99a67a6a5 100644
--- a/asm/intro.s
+++ b/asm/intro.s
@@ -5,708 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_80EC5A4
-sub_80EC5A4: @ 80EC5A4
-	push {lr}
-	bl LoadOam
-	bl ProcessSpriteCopyRequests
-	bl TransferPlttBuffer
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80EC5A4
-
-	thumb_func_start sub_80EC5B8
-sub_80EC5B8: @ 80EC5B8
-	push {lr}
-	bl UpdatePaletteFade
-	lsls r0, 24
-	cmp r0, 0
-	bne _080EC5CA
-	ldr r0, _080EC5D0 @ =sub_80EC870
-	bl SetMainCallback2
-_080EC5CA:
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EC5D0: .4byte sub_80EC870
-	thumb_func_end sub_80EC5B8
-
-	thumb_func_start load_copyright_graphics
-load_copyright_graphics: @ 80EC5D4
-	push {r4-r6,lr}
-	adds r3, r0, 0
-	adds r4, r1, 0
-	adds r5, r2, 0
-	lsls r3, 16
-	lsrs r3, 16
-	lsls r4, 16
-	lsrs r4, 16
-	lsls r5, 16
-	lsrs r5, 16
-	ldr r0, _080EC610 @ =gUnknown_8402280
-	movs r6, 0xC0
-	lsls r6, 19
-	adds r3, r6
-	adds r1, r3, 0
-	bl LZ77UnCompVram
-	ldr r0, _080EC614 @ =gUnknown_84024E4
-	adds r4, r6
-	adds r1, r4, 0
-	bl LZ77UnCompVram
-	ldr r0, _080EC618 @ =gUnknown_8402260
-	adds r1, r5, 0
-	movs r2, 0x20
-	bl LoadPalette
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EC610: .4byte gUnknown_8402280
-_080EC614: .4byte gUnknown_84024E4
-_080EC618: .4byte gUnknown_8402260
-	thumb_func_end load_copyright_graphics
-
-	thumb_func_start SerialCb_CopyrightScreen
-SerialCb_CopyrightScreen: @ 80EC61C
-	push {lr}
-	ldr r0, _080EC628 @ =gUnknown_203AAD4
-	bl GameCubeMultiBoot_HandleSerialInterrupt
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EC628: .4byte gUnknown_203AAD4
-	thumb_func_end SerialCb_CopyrightScreen
-
-	thumb_func_start sub_80EC62C
-sub_80EC62C: @ 80EC62C
-	push {r4-r6,lr}
-	sub sp, 0xC
-	ldr r0, _080EC64C @ =gMain
-	movs r1, 0x87
-	lsls r1, 3
-	adds r5, r0, r1
-	ldrb r4, [r5]
-	cmp r4, 0x8C
-	bne _080EC640
-	b _080EC778
-_080EC640:
-	cmp r4, 0x8C
-	bgt _080EC650
-	cmp r4, 0
-	beq _080EC65E
-	b _080EC732
-	.align 2, 0
-_080EC64C: .4byte gMain
-_080EC650:
-	cmp r4, 0x8D
-	bne _080EC656
-	b _080EC7A4
-_080EC656:
-	cmp r4, 0x8E
-	bne _080EC65C
-	b _080EC808
-_080EC65C:
-	b _080EC732
-_080EC65E:
-	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, _080EC74C @ =0x00007fff
-	adds r0, r2, 0
-	strh r0, [r1]
-	movs r0, 0
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x10
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x12
-	movs r1, 0
-	bl SetGpuReg
-	add r0, sp, 0x4
-	strh r4, [r0]
-	ldr r1, _080EC750 @ =0x040000d4
-	str r0, [r1]
-	movs r0, 0xC0
-	lsls r0, 19
-	str r0, [r1, 0x4]
-	ldr r0, _080EC754 @ =0x8100c000
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	str r4, [sp, 0x8]
-	add r0, sp, 0x8
-	str r0, [r1]
-	movs r0, 0xE0
-	lsls r0, 19
-	str r0, [r1, 0x4]
-	ldr r0, _080EC758 @ =0x85000100
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	add r0, sp, 0x4
-	strh r4, [r0]
-	str r0, [r1]
-	ldr r0, _080EC75C @ =0x05000002
-	str r0, [r1, 0x4]
-	ldr r0, _080EC760 @ =0x810001ff
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	bl ResetPaletteFade
-	movs r1, 0xE0
-	lsls r1, 6
-	movs r0, 0
-	movs r2, 0
-	bl load_copyright_graphics
-	bl ScanlineEffect_Stop
-	bl ResetTasks
-	bl ResetSpriteData
-	bl FreeAllSpritePalettes
-	movs r0, 0x1
-	negs r0, r0
-	ldr r1, _080EC764 @ =0x0000ffff
-	str r1, [sp]
-	movs r1, 0
-	movs r2, 0x10
-	movs r3, 0
-	bl BeginNormalPaletteFade
-	movs r1, 0xE0
-	lsls r1, 3
-	movs r0, 0x8
-	bl SetGpuReg
-	movs r0, 0x1
-	bl EnableInterrupts
-	ldr r0, _080EC768 @ =sub_80EC5A4
-	bl SetVBlankCallback
-	movs r1, 0xA0
-	lsls r1, 1
-	movs r0, 0
-	bl SetGpuReg
-	ldr r0, _080EC76C @ =SerialCb_CopyrightScreen
-	bl SetSerialCallback
-	ldr r0, _080EC770 @ =gUnknown_203AAD4
-	bl GameCubeMultiBoot_Init
-_080EC732:
-	bl UpdatePaletteFade
-	ldr r0, _080EC774 @ =gMain
-	movs r1, 0x87
-	lsls r1, 3
-	adds r0, r1
-	ldrb r1, [r0]
-	adds r1, 0x1
-	strb r1, [r0]
-	ldr r0, _080EC770 @ =gUnknown_203AAD4
-	bl GameCubeMultiBoot_Main
-	b _080EC812
-	.align 2, 0
-_080EC74C: .4byte 0x00007fff
-_080EC750: .4byte 0x040000d4
-_080EC754: .4byte 0x8100c000
-_080EC758: .4byte 0x85000100
-_080EC75C: .4byte 0x05000002
-_080EC760: .4byte 0x810001ff
-_080EC764: .4byte 0x0000ffff
-_080EC768: .4byte sub_80EC5A4
-_080EC76C: .4byte SerialCb_CopyrightScreen
-_080EC770: .4byte gUnknown_203AAD4
-_080EC774: .4byte gMain
-_080EC778:
-	ldr r4, _080EC7A0 @ =gUnknown_203AAD4
-	adds r0, r4, 0
-	bl GameCubeMultiBoot_Main
-	ldrb r0, [r4, 0x2]
-	cmp r0, 0x1
-	beq _080EC812
-	movs r0, 0x1
-	negs r0, r0
-	movs r1, 0
-	str r1, [sp]
-	movs r2, 0
-	movs r3, 0x10
-	bl BeginNormalPaletteFade
-	ldrb r0, [r5]
-	adds r0, 0x1
-	strb r0, [r5]
-	b _080EC812
-	.align 2, 0
-_080EC7A0: .4byte gUnknown_203AAD4
-_080EC7A4:
-	bl UpdatePaletteFade
-	lsls r0, 24
-	cmp r0, 0
-	bne _080EC812
-	ldrb r0, [r5]
-	adds r0, 0x1
-	strb r0, [r5]
-	ldr r5, _080EC7E4 @ =gUnknown_203AAD4
-	ldrb r0, [r5, 0x2]
-	cmp r0, 0
-	beq _080EC7F4
-	ldrb r0, [r5, 0x2]
-	cmp r0, 0x2
-	bne _080EC7FE
-	ldr r6, _080EC7E8 @ =0x020000ac
-	ldr r4, [r6]
-	ldr r0, _080EC7EC @ =0x65366347
-	cmp r4, r0
-	bne _080EC7DC
-	ldr r0, _080EC7F0 @ =gMultiBootProgram_PokemonColosseum_Start
-	movs r1, 0x80
-	lsls r1, 18
-	movs r2, 0xA0
-	lsls r2, 9
-	bl CpuSet
-	str r4, [r6]
-_080EC7DC:
-	adds r0, r5, 0
-	bl GameCubeMultiBoot_ExecuteProgram
-	b _080EC7FE
-	.align 2, 0
-_080EC7E4: .4byte gUnknown_203AAD4
-_080EC7E8: .4byte 0x020000ac
-_080EC7EC: .4byte 0x65366347
-_080EC7F0: .4byte gMultiBootProgram_PokemonColosseum_Start
-_080EC7F4:
-	bl GameCubeMultiBoot_Quit
-	ldr r0, _080EC804 @ =SerialCB
-	bl SetSerialCallback
-_080EC7FE:
-	movs r0, 0
-	b _080EC814
-	.align 2, 0
-_080EC804: .4byte SerialCB
-_080EC808:
-	bl sub_800B388
-	ldr r0, _080EC81C @ =sub_80EC5B8
-	bl SetMainCallback2
-_080EC812:
-	movs r0, 0x1
-_080EC814:
-	add sp, 0xC
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	.align 2, 0
-_080EC81C: .4byte sub_80EC5B8
-	thumb_func_end sub_80EC62C
-
-	thumb_func_start c2_copyright_1
-c2_copyright_1: @ 80EC820
-	push {lr}
-	bl sub_80EC62C
-	lsls r0, 24
-	cmp r0, 0
-	bne _080EC858
-	bl ResetMenuAndMonGlobals
-	bl Save_ResetSaveCounters
-	movs r0, 0
-	bl Save_LoadGameData
-	ldr r0, _080EC85C @ =gSaveFileStatus
-	ldrh r0, [r0]
-	cmp r0, 0
-	beq _080EC846
-	cmp r0, 0x2
-	bne _080EC84A
-_080EC846:
-	bl Sav2_ClearSetDefault
-_080EC84A:
-	ldr r0, _080EC860 @ =gSaveBlock2Ptr
-	ldr r0, [r0]
-	ldrb r0, [r0, 0x15]
-	lsls r0, 31
-	lsrs r0, 31
-	bl SetPokemonCryStereo
-_080EC858:
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EC85C: .4byte gSaveFileStatus
-_080EC860: .4byte gSaveBlock2Ptr
-	thumb_func_end c2_copyright_1
-
-	thumb_func_start sub_80EC864
-sub_80EC864: @ 80EC864
-	push {lr}
-	bl sub_80EC62C
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80EC864
-
-	thumb_func_start sub_80EC870
-sub_80EC870: @ 80EC870
-	push {r4,lr}
-	sub sp, 0xC
-	ldr r0, _080EC88C @ =gMain
-	movs r1, 0x87
-	lsls r1, 3
-	adds r0, r1
-	ldrb r4, [r0]
-	cmp r4, 0x1
-	beq _080EC944
-	cmp r4, 0x1
-	bgt _080EC890
-	cmp r4, 0
-	beq _080EC8A0
-	b _080EC894
-	.align 2, 0
-_080EC88C: .4byte gMain
-_080EC890:
-	cmp r4, 0x2
-	beq _080EC988
-_080EC894:
-	ldr r0, _080EC928 @ =gMain
-	movs r1, 0x87
-	lsls r1, 3
-	adds r0, r1
-	movs r1, 0
-	strb r1, [r0]
-_080EC8A0:
-	movs r0, 0
-	bl SetVBlankCallback
-	movs r0, 0
-	movs r1, 0
-	bl SetGpuReg
-	ldr r0, _080EC92C @ =gHeap
-	movs r1, 0xE0
-	lsls r1, 9
-	bl InitHeap
-	bl ResetTasks
-	bl ResetSpriteData
-	bl ResetPaletteFade
-	bl ResetTempTileDataBuffers
-	bl sub_80ECA00
-	add r1, sp, 0x4
-	movs r0, 0
-	strh r0, [r1]
-	ldr r1, _080EC930 @ =0x040000d4
-	add r0, sp, 0x4
-	str r0, [r1]
-	movs r0, 0xC0
-	lsls r0, 19
-	str r0, [r1, 0x4]
-	ldr r0, _080EC934 @ =0x8100c000
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	movs r2, 0
-	str r2, [sp, 0x8]
-	add r0, sp, 0x8
-	str r0, [r1]
-	movs r0, 0xE0
-	lsls r0, 19
-	str r0, [r1, 0x4]
-	ldr r0, _080EC938 @ =0x85000100
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	add r0, sp, 0x4
-	strh r2, [r0]
-	str r0, [r1]
-	movs r0, 0xA0
-	lsls r0, 19
-	str r0, [r1, 0x4]
-	ldr r0, _080EC93C @ =0x81000200
-	str r0, [r1, 0x8]
-	ldr r0, [r1, 0x8]
-	movs r2, 0x80
-	lsls r2, 3
-	movs r0, 0
-	movs r1, 0
-	bl FillPalette
-	movs r0, 0
-	bl ResetBgsAndClearDma3BusyFlags
-	ldr r1, _080EC940 @ =gUnknown_840BB80
-	movs r0, 0
-	movs r2, 0x2
-	bl InitBgsFromTemplates
-	b _080EC9B8
-	.align 2, 0
-_080EC928: .4byte gMain
-_080EC92C: .4byte gHeap
-_080EC930: .4byte 0x040000d4
-_080EC934: .4byte 0x8100c000
-_080EC938: .4byte 0x85000100
-_080EC93C: .4byte 0x81000200
-_080EC940: .4byte gUnknown_840BB80
-_080EC944:
-	ldr r0, _080EC978 @ =gUnknown_8402630
-	movs r1, 0
-	movs r2, 0x20
-	bl LoadPalette
-	ldr r1, _080EC97C @ =gUnknown_8402650
-	movs r0, 0
-	str r0, [sp]
-	movs r0, 0x3
-	movs r2, 0
-	movs r3, 0
-	bl DecompressAndCopyTileDataToVram
-	ldr r1, _080EC980 @ =gUnknown_8402668
-	str r4, [sp]
-	movs r0, 0x3
-	movs r2, 0
-	movs r3, 0
-	bl DecompressAndCopyTileDataToVram
-	ldr r0, _080EC984 @ =gUnknown_840270C
-	movs r1, 0xD0
-	movs r2, 0x20
-	bl LoadPalette
-	b _080EC9B8
-	.align 2, 0
-_080EC978: .4byte gUnknown_8402630
-_080EC97C: .4byte gUnknown_8402650
-_080EC980: .4byte gUnknown_8402668
-_080EC984: .4byte gUnknown_840270C
-_080EC988:
-	bl FreeTempTileDataBuffersIfPossible
-	lsls r0, 24
-	cmp r0, 0
-	bne _080EC9C6
-	bl sub_80ECA70
-	movs r0, 0x1
-	negs r0, r0
-	movs r1, 0x10
-	movs r2, 0
-	bl BlendPalettes
-	ldr r0, _080EC9B0 @ =sub_80EC9D4
-	bl SetMainCallback2
-	ldr r0, _080EC9B4 @ =sub_80EC9EC
-	bl SetVBlankCallback
-	b _080EC9C6
-	.align 2, 0
-_080EC9B0: .4byte sub_80EC9D4
-_080EC9B4: .4byte sub_80EC9EC
-_080EC9B8:
-	ldr r1, _080EC9D0 @ =gMain
-	movs r0, 0x87
-	lsls r0, 3
-	adds r1, r0
-	ldrb r0, [r1]
-	adds r0, 0x1
-	strb r0, [r1]
-_080EC9C6:
-	add sp, 0xC
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EC9D0: .4byte gMain
-	thumb_func_end sub_80EC870
-
-	thumb_func_start sub_80EC9D4
-sub_80EC9D4: @ 80EC9D4
-	push {lr}
-	bl RunTasks
-	bl AnimateSprites
-	bl BuildOamBuffer
-	bl UpdatePaletteFade
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80EC9D4
-
-	thumb_func_start sub_80EC9EC
-sub_80EC9EC: @ 80EC9EC
-	push {lr}
-	bl LoadOam
-	bl ProcessSpriteCopyRequests
-	bl TransferPlttBuffer
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80EC9EC
-
-	thumb_func_start sub_80ECA00
-sub_80ECA00: @ 80ECA00
-	push {lr}
-	movs r0, 0
-	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
-	movs r0, 0x10
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x12
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x14
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x16
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x18
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x1A
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x1C
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x1E
-	movs r1, 0
-	bl SetGpuReg
-	movs r1, 0x82
-	lsls r1, 5
-	movs r0, 0
-	bl SetGpuRegBits
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80ECA00
-
-	thumb_func_start sub_80ECA70
-sub_80ECA70: @ 80ECA70
-	push {r4,lr}
-	ldr r0, _080ECA9C @ =0x000028bc
-	bl Alloc
-	adds r4, r0, 0
-	ldr r1, _080ECAA0 @ =sub_80ECAF0
-	bl sub_80ECAA8
-	ldr r0, _080ECAA4 @ =sub_80ECAB0
-	movs r1, 0x3
-	bl CreateTask
-	strb r0, [r4, 0x5]
-	ldrb r0, [r4, 0x5]
-	movs r1, 0
-	adds r2, r4, 0
-	bl SetWordTaskArg
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080ECA9C: .4byte 0x000028bc
-_080ECAA0: .4byte sub_80ECAF0
-_080ECAA4: .4byte sub_80ECAB0
-	thumb_func_end sub_80ECA70
-
-	thumb_func_start sub_80ECAA8
-sub_80ECAA8: @ 80ECAA8
-	str r1, [r0]
-	movs r1, 0
-	strb r1, [r0, 0x4]
-	bx lr
-	thumb_func_end sub_80ECAA8
-
-	thumb_func_start sub_80ECAB0
-sub_80ECAB0: @ 80ECAB0
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r0, 24
-	movs r1, 0
-	bl GetWordTaskArg
-	adds r4, r0, 0
-	ldr r0, _080ECAE8 @ =gMain
-	ldrh r1, [r0, 0x2E]
-	movs r0, 0xD
-	ands r0, r1
-	cmp r0, 0
-	beq _080ECAD8
-	ldr r0, [r4]
-	ldr r1, _080ECAEC @ =sub_80EDBE8
-	cmp r0, r1
-	beq _080ECAD8
-	adds r0, r4, 0
-	bl sub_80ECAA8
-_080ECAD8:
-	ldr r1, [r4]
-	adds r0, r4, 0
-	bl _call_via_r1
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080ECAE8: .4byte gMain
-_080ECAEC: .4byte sub_80EDBE8
-	thumb_func_end sub_80ECAB0
-
-	thumb_func_start sub_80ECAF0
-sub_80ECAF0: @ 80ECAF0
-	push {r4,r5,lr}
-	sub sp, 0xC
-	adds r5, r0, 0
-	ldrb r0, [r5, 0x4]
-	cmp r0, 0
-	beq _080ECB02
-	cmp r0, 0x1
-	beq _080ECB78
-	b _080ECB8A
-_080ECB02:
-	ldr r0, _080ECB68 @ =gUnknown_840BBA8
-	bl InitWindows
-	ldr r0, _080ECB6C @ =gUnknown_840272C
-	ldr r1, _080ECB70 @ =0x0000043c
-	adds r4, r5, r1
-	adds r1, r4, 0
-	bl LZ77UnCompWram
-	ldr r0, _080ECB74 @ =gUnknown_84028F8
-	adds r1, r5, 0
-	adds r1, 0x3C
-	bl LZ77UnCompWram
-	movs r0, 0x20
-	str r0, [sp]
-	str r0, [sp, 0x4]
-	movs r0, 0x11
-	str r0, [sp, 0x8]
-	movs r0, 0x2
-	movs r1, 0
-	movs r2, 0
-	movs r3, 0
-	bl FillBgTilemapBufferRect
-	movs r0, 0
-	movs r1, 0
-	bl FillWindowPixelBuffer
-	movs r0, 0x90
-	str r0, [sp]
-	movs r0, 0x10
-	str r0, [sp, 0x4]
-	movs r0, 0
-	adds r1, r4, 0
-	movs r2, 0
-	movs r3, 0x28
-	bl BlitBitmapToWindow
-	movs r0, 0
-	bl PutWindowTilemap
-	movs r0, 0
-	movs r1, 0x3
-	bl CopyWindowToVram
-	ldrb r0, [r5, 0x4]
-	adds r0, 0x1
-	strb r0, [r5, 0x4]
-	b _080ECB8A
-	.align 2, 0
-_080ECB68: .4byte gUnknown_840BBA8
-_080ECB6C: .4byte gUnknown_840272C
-_080ECB70: .4byte 0x0000043c
-_080ECB74: .4byte gUnknown_84028F8
-_080ECB78:
-	bl IsDma3ManagerBusyWithBgCopy
-	lsls r0, 24
-	cmp r0, 0
-	bne _080ECB8A
-	ldr r1, _080ECB94 @ =sub_80ECB98
-	adds r0, r5, 0
-	bl sub_80ECAA8
-_080ECB8A:
-	add sp, 0xC
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080ECB94: .4byte sub_80ECB98
-	thumb_func_end sub_80ECAF0
-
 	thumb_func_start sub_80ECB98
 sub_80ECB98: @ 80ECB98
 	push {r4,r5,lr}
diff --git a/baserom.ips b/baserom.ips
index 95538d30e..11c3b7f62 100644
--- a/baserom.ips
+++ b/baserom.ips
diff --git a/include/libgcnmultiboot.h b/include/libgcnmultiboot.h
new file mode 100644
index 000000000..7d347df05
--- /dev/null
+++ b/include/libgcnmultiboot.h
@@ -0,0 +1,17 @@
+#ifndef GUARD_LIBGCMMULTIBOOT_H
+#define GUARD_LIBGCNMULTIBOOT_H
+
+struct GcmbStruct
+{
+    u16 gcmb_field_0;
+    vu8 gcmb_field_2;
+    u8 filler3[0x2C - 0x3];
+};
+
+void GameCubeMultiBoot_Main(struct GcmbStruct *pStruct);
+void GameCubeMultiBoot_ExecuteProgram(struct GcmbStruct *pStruct);
+void GameCubeMultiBoot_Init(struct GcmbStruct *pStruct);
+void GameCubeMultiBoot_HandleSerialInterrupt(struct GcmbStruct *pStruct);
+void GameCubeMultiBoot_Quit(void);
+
+#endif // GUARD_LIBGCNMULTIBOOT_H
diff --git a/include/link.h b/include/link.h
index 0ec32d8a0..e1a4e106b 100644
--- a/include/link.h
+++ b/include/link.h
@@ -207,5 +207,7 @@ void sub_80098D8(void);
 void CloseLink(void);
 bool8 sub_800A4BC(void);
 bool32 sub_800B270(void);
+void sub_800B388(void);
+void sub_8054A28(void);
 
 #endif // GUARD_LINK_H
diff --git a/ld_script.txt b/ld_script.txt
index 22672e178..f2f738c84 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -210,6 +210,7 @@ SECTIONS {
         asm/battle_tower.o(.text);
         asm/battle_controller_oak.o(.text);
         asm/player_pc.o(.text);
+        src/intro.o(.text);
         asm/intro.o(.text);
         asm/battle_anim_special.o(.text);
         asm/hall_of_fame.o(.text);
diff --git a/src/intro.c b/src/intro.c
new file mode 100644
index 000000000..42d2af471
--- /dev/null
+++ b/src/intro.c
@@ -0,0 +1,289 @@
+#include "global.h"
+#include "m4a.h"
+#include "malloc.h"
+#include "bg.h"
+#include "palette.h"
+#include "main.h"
+#include "gpu_regs.h"
+#include "task.h"
+#include "scanline_effect.h"
+#include "libgcnmultiboot.h"
+#include "new_menu_helpers.h"
+#include "link.h"
+#include "menu.h"
+#include "save.h"
+#include "new_game.h"
+
+struct IntroSequenceData
+{
+    void (*field_0000)(struct IntroSequenceData *);
+    u8 field_0004;
+    u8 field_0005;
+    u8 filler_0006[0x36];
+    u8 field_003C[0x400];
+    u8 field_043C[0x400];
+    u8 filler_083C[0x2080];
+}; // size: 0x28BC
+
+EWRAM_DATA struct GcmbStruct gUnknown_203AAD4 = {0};
+
+void sub_80EC870(void);
+void sub_80EC9D4(void);
+void sub_80EC9EC(void);
+void sub_80ECA00(void);
+void sub_80ECA70(void);
+void sub_80ECAB0(u8 taskId);
+void sub_80ECAA8(struct IntroSequenceData * ptr, void (*cb)(struct IntroSequenceData *));
+void sub_80ECAF0(struct IntroSequenceData * ptr);
+void sub_80ECB98(struct IntroSequenceData * ptr);
+void sub_80EDBE8(struct IntroSequenceData * ptr);
+
+extern const u32 gMultiBootProgram_PokemonColosseum_Start[];
+
+extern const u8 gUnknown_8402260[];
+extern const u8 gUnknown_8402280[];
+extern const u8 gUnknown_84024E4[];
+extern const u16 gUnknown_8402630[];
+extern const u8 gUnknown_8402650[];
+extern const u8 gUnknown_8402668[];
+extern const u16 gUnknown_840270C[];
+extern const u8 gUnknown_840272C[];
+extern const u8 gUnknown_84028F8[];
+
+extern const struct BgTemplate gUnknown_840BB80[2];
+extern const struct WindowTemplate gUnknown_840BBA8[];
+
+void sub_80EC5A4(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+}
+
+void sub_80EC5B8(void)
+{
+    if (!UpdatePaletteFade())
+        SetMainCallback2(sub_80EC870);
+}
+
+void load_copyright_graphics(u16 a, u16 b, u16 c)
+{
+    LZ77UnCompVram(gUnknown_8402280, (void *)BG_VRAM + a);
+    LZ77UnCompVram(gUnknown_84024E4, (void *)BG_VRAM + b);
+    LoadPalette(gUnknown_8402260, c, 0x20);
+}
+
+void SerialCb_CopyrightScreen(void)
+{
+    GameCubeMultiBoot_HandleSerialInterrupt(&gUnknown_203AAD4);
+}
+
+bool8 sub_80EC62C(void)
+{
+    switch (gMain.state)
+    {
+    case 0:
+        SetVBlankCallback(NULL);
+        SetGpuReg(REG_OFFSET_BLDCNT, 0);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+        SetGpuReg(REG_OFFSET_BLDY, 0);
+        ((vu16*)PLTT)[0] = RGB_WHITE;
+        SetGpuReg(REG_OFFSET_DISPCNT, 0);
+        SetGpuReg(REG_OFFSET_BG0HOFS, 0);
+        SetGpuReg(REG_OFFSET_BG0VOFS, 0);
+        DmaFill16(3, 0, VRAM, VRAM_SIZE);
+        DmaFill32(3, 0, OAM, OAM_SIZE);
+        DmaFill16(3, 0, PLTT + sizeof(vu16), PLTT_SIZE - sizeof(vu16));
+        ResetPaletteFade();
+        load_copyright_graphics(0, 0x3800, 0);
+        ScanlineEffect_Stop();
+        ResetTasks();
+        ResetSpriteData();
+        FreeAllSpritePalettes();BeginNormalPaletteFade(0xFFFFFFFF, 0, 16, 0, 0xFFFF);
+        SetGpuReg(REG_OFFSET_BG0CNT, 0x700);
+        EnableInterrupts(INTR_FLAG_VBLANK);
+        SetVBlankCallback(sub_80EC5A4);
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_1D_MAP | DISPCNT_BG0_ON);
+        SetSerialCallback(SerialCb_CopyrightScreen);
+        GameCubeMultiBoot_Init(&gUnknown_203AAD4);
+        // fallthrough
+    default:
+        UpdatePaletteFade();
+        gMain.state++;
+        GameCubeMultiBoot_Main(&gUnknown_203AAD4);
+        break;
+    case 140:
+        GameCubeMultiBoot_Main(&gUnknown_203AAD4);
+        if (gUnknown_203AAD4.gcmb_field_2 != 1)
+        {
+            BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 16, RGB_BLACK);
+            gMain.state++;
+        }
+        break;
+    case 141:
+        if (!UpdatePaletteFade())
+        {
+            gMain.state++;
+            if (gUnknown_203AAD4.gcmb_field_2 != 0)
+            {
+                if (gUnknown_203AAD4.gcmb_field_2 == 2)
+                {
+                    if (*((u32 *)0x020000AC) == 0x65366347)
+                    {
+                        CpuCopy16(gMultiBootProgram_PokemonColosseum_Start, (void *)EWRAM_START, 0x28000);
+                        *((u32 *)0x020000AC) = 0x65366347;
+                    }
+                    GameCubeMultiBoot_ExecuteProgram(&gUnknown_203AAD4);
+                }
+            }
+            else
+            {
+                GameCubeMultiBoot_Quit();
+                SetSerialCallback(SerialCB);
+            }
+            return FALSE;
+        }
+        break;
+    case 142:
+        sub_800B388();
+        SetMainCallback2(sub_80EC5B8);
+        break;
+    }
+    return TRUE;
+}
+
+void c2_copyright_1(void)
+{
+    if (!sub_80EC62C())
+    {
+        ResetMenuAndMonGlobals();
+        Save_ResetSaveCounters();
+        Save_LoadGameData(0);
+        if (gSaveFileStatus == SAVE_STATUS_EMPTY || gSaveFileStatus == SAVE_STATUS_INVALID)
+            Sav2_ClearSetDefault();
+        SetPokemonCryStereo(gSaveBlock2Ptr->optionsSound);
+    }
+}
+
+void sub_80EC864(void)
+{
+    sub_80EC62C();
+}
+
+void sub_80EC870(void)
+{
+    switch (gMain.state)
+    {
+    default:
+        gMain.state = 0;
+        // fallthrough
+    case 0:
+        SetVBlankCallback(NULL);
+        SetGpuReg(REG_OFFSET_DISPCNT, 0);
+        InitHeap(gHeap, HEAP_SIZE);
+        ResetTasks();
+        ResetSpriteData();
+        ResetPaletteFade();
+        ResetTempTileDataBuffers();
+        sub_80ECA00();
+        DmaFill16(3, 0, VRAM, VRAM_SIZE);
+        DmaFill32(3, 0, OAM, OAM_SIZE);
+        DmaFill16(3, 0, PLTT, PLTT_SIZE);
+        FillPalette(0, 0, 0x400);
+        ResetBgsAndClearDma3BusyFlags(0);
+        InitBgsFromTemplates(0, gUnknown_840BB80, NELEMS(gUnknown_840BB80));
+        break;
+    case 1:
+        LoadPalette(gUnknown_8402630, 0x00, 0x20);
+        DecompressAndCopyTileDataToVram(3, gUnknown_8402650, 0, 0, 0);
+        DecompressAndCopyTileDataToVram(3, gUnknown_8402668, 0, 0, 1);
+        LoadPalette(gUnknown_840270C, 0xD0, 0x20);
+        break;
+    case 2:
+        if (!FreeTempTileDataBuffersIfPossible())
+        {
+            sub_80ECA70();
+            BlendPalettes(0xFFFFFFFF, 16, RGB_BLACK);
+            SetMainCallback2(sub_80EC9D4);
+            SetVBlankCallback(sub_80EC9EC);
+        }
+        return;
+    }
+    gMain.state++;
+}
+
+void sub_80EC9D4(void)
+{
+    RunTasks();
+    AnimateSprites();
+    BuildOamBuffer();
+    UpdatePaletteFade();
+}
+
+void sub_80EC9EC(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+}
+
+void sub_80ECA00(void)
+{
+    SetGpuReg(REG_OFFSET_DISPCNT, 0);
+    SetGpuReg(REG_OFFSET_BLDCNT, 0);
+    SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+    SetGpuReg(REG_OFFSET_BLDY, 0);
+    SetGpuReg(REG_OFFSET_BG0HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG0VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG2HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG2VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG3HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG3VOFS, 0);
+    SetGpuRegBits(REG_OFFSET_DISPCNT, DISPCNT_OBJ_1D_MAP | DISPCNT_OBJ_ON);
+}
+
+void sub_80ECA70(void)
+{
+    struct IntroSequenceData * ptr = Alloc(sizeof(struct IntroSequenceData));
+    sub_80ECAA8(ptr, sub_80ECAF0);
+    ptr->field_0005 = CreateTask(sub_80ECAB0, 3);
+    SetWordTaskArg(ptr->field_0005, 0, (uintptr_t)ptr);
+}
+
+void sub_80ECAA8(struct IntroSequenceData * ptr, void (*cb)(struct IntroSequenceData *))
+{
+    ptr->field_0000 = cb;
+    ptr->field_0004 = 0;
+}
+
+void sub_80ECAB0(u8 taskId)
+{
+    struct IntroSequenceData * ptr = (void *)GetWordTaskArg(taskId, 0);
+    if (JOY_NEW(A_BUTTON | START_BUTTON | SELECT_BUTTON) && ptr->field_0000 != sub_80EDBE8)
+        sub_80ECAA8(ptr, sub_80EDBE8);
+    ptr->field_0000(ptr);
+}
+
+void sub_80ECAF0(struct IntroSequenceData * this)
+{
+    switch (this->field_0004)
+    {
+    case 0:
+        InitWindows(gUnknown_840BBA8);
+        LZ77UnCompWram(gUnknown_840272C, this->field_043C);
+        LZ77UnCompWram(gUnknown_84028F8, this->field_003C);
+        FillBgTilemapBufferRect(2, 0x000, 0, 0, 32, 32, 0x11);
+        FillWindowPixelBuffer(0, 0x00);
+        BlitBitmapToWindow(0, this->field_043C, 0, 40, 144, 16);
+        PutWindowTilemap(0);
+        CopyWindowToVram(0, 3);
+        this->field_0004++;
+        break;
+    case 1:
+        if (!IsDma3ManagerBusyWithBgCopy())
+            sub_80ECAA8(this, sub_80ECB98);
+        break;
+    }
+}