more work on music functions

1 files changed, 1178 insertions, 0 deletions

diff --git a/asm/music.s b/asm/music.s
new file mode 100644
index 0000000..006ddff
--- /dev/null
+++ b/asm/music.s
@@ -0,0 +1,1178 @@
+	.include "constants/gba_constants.inc"
+	.include "asm/macros.inc"
+
+	.syntax unified
+
+	.text
+
+	thumb_func_start sub_800BFD0
+sub_800BFD0:
+	push {r4,r5,lr}
+	lsls r1, r0, 16
+	movs r0, 0x80
+	lsls r0, 17
+	cmp r1, r0
+	bls _0800BFE0
+	movs r4, 0x10
+	b _0800BFE8
+_0800BFE0:
+	lsrs r4, r1, 20
+	cmp r4, 0
+	bne _0800BFE8
+	movs r4, 0x1
+_0800BFE8:
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r5, r0, 24
+	ldr r0, _0800C018
+	ldrh r0, [r0]
+	cmp r0, 0
+	bne _0800C03C
+	ldr r3, _0800C01C
+	ldrh r0, [r3]
+	ldr r2, _0800C020
+	cmp r0, r2
+	beq _0800C044
+	ldr r1, _0800C024
+	ldrh r0, [r1]
+	cmp r0, 0x2
+	bne _0800C02C
+	movs r0, 0x3
+	strh r0, [r1]
+	ldr r0, _0800C028
+	adds r1, r4, 0
+	bl m4aMPlayFadeOut
+	b _0800C044
+	.align 2, 0
+_0800C018: .4byte gUnknown_202D690
+_0800C01C: .4byte gUnknown_202D68A
+_0800C020: .4byte 0x000003e7
+_0800C024: .4byte gUnknown_202D688
+_0800C028: .4byte gUnknown_20008F0
+_0800C02C:
+	strh r2, [r3]
+	ldr r0, _0800C038
+	bl m4aMPlayStop
+	b _0800C044
+	.align 2, 0
+_0800C038: .4byte gUnknown_20008F0
+_0800C03C:
+	ldr r1, _0800C05C
+	ldr r2, _0800C060
+	adds r0, r2, 0
+	strh r0, [r1]
+_0800C044:
+	ldr r1, _0800C064
+	ldr r2, _0800C060
+	adds r0, r2, 0
+	strh r0, [r1]
+	cmp r5, 0
+	beq _0800C054
+	bl EnableInterrupts
+_0800C054:
+	pop {r4,r5}
+	pop {r0}
+	bx r0
+	.align 2, 0
+_0800C05C: .4byte gUnknown_202D68A
+_0800C060: .4byte 0x000003e7
+_0800C064: .4byte gUnknown_202D68C
+	thumb_func_end sub_800BFD0
+
+	thumb_func_start sub_800C068
+sub_800C068:
+	ldr r0, _0800C070
+	ldrh r0, [r0]
+	bx lr
+	.align 2, 0
+_0800C070: .4byte gUnknown_202D68A
+	thumb_func_end sub_800C068
+
+	thumb_func_start sub_800C074
+sub_800C074:
+	push {r4-r7,lr}
+	mov r7, r8
+	push {r7}
+	lsls r0, 16
+	lsrs r5, r0, 16
+	mov r8, r5
+	lsls r1, 16
+	lsrs r6, r1, 16
+	ldr r0, _0800C0FC
+	cmp r5, r0
+	bne _0800C08C
+	b _0800C208
+_0800C08C:
+	movs r7, 0x80
+	lsls r7, 1
+	cmp r6, r7
+	bls _0800C096
+	adds r6, r7, 0
+_0800C096:
+	adds r0, r5, 0
+	bl sub_800CACC
+	lsls r0, 24
+	cmp r0, 0
+	bne _0800C0A4
+	b _0800C1B0
+_0800C0A4:
+	adds r0, r5, 0
+	bl sub_800CAE0
+	lsls r0, 16
+	lsrs r7, r0, 16
+	cmp r7, 0x1
+	beq _0800C0B4
+	b _0800C1D0
+_0800C0B4:
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r0, 24
+	mov r8, r0
+	ldr r6, _0800C100
+	strh r5, [r6]
+	ldr r4, _0800C104
+	ldrh r0, [r4]
+	adds r2, r0, 0
+	cmp r2, 0
+	bne _0800C144
+	ldr r0, _0800C108
+	ldrh r1, [r0]
+	ldr r0, _0800C10C
+	cmp r1, r0
+	beq _0800C12C
+	ldr r0, _0800C110
+	ldrh r1, [r0]
+	subs r0, r1, 0x1
+	lsls r0, 16
+	lsrs r0, 16
+	cmp r0, 0x1
+	bhi _0800C120
+	strh r7, [r4]
+	ldr r1, _0800C114
+	movs r0, 0x10
+	strh r0, [r1]
+	ldr r0, _0800C118
+	strb r2, [r0]
+	ldr r0, _0800C11C
+	movs r1, 0x1
+	bl m4aMPlayFadeOutTemporarily
+	b _0800C15E
+	.align 2, 0
+_0800C0FC: .4byte 0x000003e5
+_0800C100: .4byte gUnknown_202D68E
+_0800C104: .4byte gUnknown_202D690
+_0800C108: .4byte gUnknown_202D68A
+_0800C10C: .4byte 0x000003e7
+_0800C110: .4byte gUnknown_202D688
+_0800C114: .4byte gUnknown_202D692
+_0800C118: .4byte gUnknown_202D694
+_0800C11C: .4byte gUnknown_20008F0
+_0800C120:
+	lsls r0, r1, 16
+	lsrs r0, 16
+	cmp r0, 0x3
+	bne _0800C12C
+	movs r0, 0x2
+	b _0800C15C
+_0800C12C:
+	movs r0, 0x3
+	strh r0, [r4]
+	ldr r0, _0800C140
+	bl m4aMPlayStop
+	ldrh r0, [r6]
+	bl m4aSongNumStart
+	b _0800C15E
+	.align 2, 0
+_0800C140: .4byte gUnknown_20008F0
+_0800C144:
+	subs r0, 0x1
+	lsls r0, 16
+	lsrs r0, 16
+	cmp r0, 0x1
+	bls _0800C15E
+	ldr r0, _0800C17C
+	bl m4aMPlayStop
+	ldrh r0, [r6]
+	bl m4aSongNumStart
+	movs r0, 0x3
+_0800C15C:
+	strh r0, [r4]
+_0800C15E:
+	ldr r0, _0800C180
+	ldrh r0, [r0]
+	cmp r0, 0x26
+	bgt _0800C184
+	cmp r0, 0x25
+	bge _0800C19A
+	cmp r0, 0x1A
+	blt _0800C1A0
+	cmp r0, 0x1F
+	ble _0800C19A
+	cmp r0, 0x23
+	bgt _0800C1A0
+	cmp r0, 0x22
+	blt _0800C1A0
+	b _0800C19A
+	.align 2, 0
+_0800C17C: .4byte gUnknown_20008F0
+_0800C180: .4byte gUnknown_202D68A
+_0800C184:
+	cmp r0, 0x7A
+	beq _0800C19A
+	cmp r0, 0x7A
+	bgt _0800C196
+	cmp r0, 0x77
+	bgt _0800C1A0
+	cmp r0, 0x75
+	blt _0800C1A0
+	b _0800C19A
+_0800C196:
+	cmp r0, 0x7F
+	bne _0800C1A0
+_0800C19A:
+	ldr r1, _0800C1AC
+	movs r0, 0x1
+	strb r0, [r1]
+_0800C1A0:
+	mov r0, r8
+	cmp r0, 0
+	beq _0800C208
+	bl EnableInterrupts
+	b _0800C208
+	.align 2, 0
+_0800C1AC: .4byte gUnknown_202D694
+_0800C1B0:
+	adds r0, r5, 0
+	bl sub_800CAAC
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C208
+	adds r0, r5, 0
+	bl sub_800CAE0
+	lsls r0, 16
+	lsrs r0, 16
+	lsls r2, r0, 3
+	ldr r1, _0800C1D8
+	adds r4, r2, r1
+	cmp r0, 0x1
+	bhi _0800C1DC
+_0800C1D0:
+	adds r0, r5, 0
+	bl nullsub_20
+	b _0800C208
+	.align 2, 0
+_0800C1D8: .4byte gUnknown_3000FD8
+_0800C1DC:
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r5, r0, 24
+	mov r0, r8
+	bl m4aSongNumStart
+	movs r0, 0x1
+	strh r0, [r4]
+	mov r0, r8
+	strh r0, [r4, 0x2]
+	cmp r6, r7
+	bne _0800C1FA
+	movs r0, 0
+	b _0800C1FC
+_0800C1FA:
+	movs r0, 0x1
+_0800C1FC:
+	strb r0, [r4, 0x6]
+	strh r6, [r4, 0x4]
+	cmp r5, 0
+	beq _0800C208
+	bl EnableInterrupts
+_0800C208:
+	pop {r3}
+	mov r8, r3
+	pop {r4-r7}
+	pop {r0}
+	bx r0
+	thumb_func_end sub_800C074
+
+	thumb_func_start sub_800C214
+sub_800C214:
+	push {r4-r7,lr}
+	mov r7, r8
+	push {r7}
+	lsls r0, 16
+	lsrs r5, r0, 16
+	lsls r1, 16
+	lsrs r7, r1, 16
+	movs r0, 0x80
+	lsls r0, 1
+	cmp r7, r0
+	bls _0800C22C
+	adds r7, r0, 0
+_0800C22C:
+	adds r0, r5, 0
+	bl sub_800CACC
+	lsls r0, 24
+	cmp r0, 0
+	bne _0800C286
+	adds r0, r5, 0
+	bl sub_800CAAC
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C286
+	adds r0, r5, 0
+	bl sub_800CAE0
+	lsls r0, 16
+	lsrs r0, 16
+	ldr r2, _0800C290
+	lsls r1, r0, 1
+	adds r1, r0
+	lsls r1, 2
+	adds r1, r2
+	ldr r1, [r1]
+	mov r8, r1
+	lsls r2, r0, 3
+	ldr r1, _0800C294
+	adds r4, r2, r1
+	cmp r0, 0x1
+	bls _0800C286
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r6, r0, 24
+	ldrh r0, [r4, 0x2]
+	cmp r0, r5
+	bne _0800C27E
+	mov r0, r8
+	movs r1, 0xF
+	adds r2, r7, 0
+	bl m4aMPlayVolumeControl
+_0800C27E:
+	cmp r6, 0
+	beq _0800C286
+	bl EnableInterrupts
+_0800C286:
+	pop {r3}
+	mov r8, r3
+	pop {r4-r7}
+	pop {r0}
+	bx r0
+	.align 2, 0
+_0800C290: .4byte gMPlayTable
+_0800C294: .4byte gUnknown_3000FD8
+	thumb_func_end sub_800C214
+
+	thumb_func_start sub_800C298
+sub_800C298:
+	push {r4-r7,lr}
+	mov r7, r10
+	mov r6, r9
+	mov r5, r8
+	push {r5-r7}
+	lsls r0, 16
+	lsrs r5, r0, 16
+	ldr r0, _0800C2F0
+	mov r8, r0
+	cmp r5, r8
+	bne _0800C2FC
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r0, 24
+	mov r9, r0
+	ldr r4, _0800C2F4
+	ldr r0, _0800C2F8
+	movs r1, 0
+	mov r10, r1
+	movs r7, 0
+	adds r6, r0, 0
+	adds r6, 0x18
+	movs r5, 0x4
+_0800C2C8:
+	ldr r0, [r6]
+	bl m4aMPlayStop
+	strh r7, [r4]
+	mov r2, r8
+	strh r2, [r4, 0x2]
+	strh r7, [r4, 0x4]
+	mov r0, r10
+	strb r0, [r4, 0x6]
+	adds r6, 0xC
+	subs r5, 0x1
+	adds r4, 0x8
+	cmp r5, 0
+	bge _0800C2C8
+	mov r1, r9
+	cmp r1, 0
+	beq _0800C3DE
+	bl EnableInterrupts
+	b _0800C3DE
+	.align 2, 0
+_0800C2F0: .4byte 0x000003e5
+_0800C2F4: .4byte gUnknown_3000FE8
+_0800C2F8: .4byte gMPlayTable
+_0800C2FC:
+	adds r0, r5, 0
+	bl sub_800CAAC
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C364
+	adds r0, r5, 0
+	bl sub_800CAE0
+	lsls r0, 16
+	lsrs r0, 16
+	ldr r2, _0800C330
+	lsls r1, r0, 1
+	adds r1, r0
+	lsls r1, 2
+	adds r1, r2
+	ldr r7, [r1]
+	lsls r2, r0, 3
+	ldr r1, _0800C334
+	adds r4, r2, r1
+	cmp r0, 0x1
+	bhi _0800C338
+	adds r0, r5, 0
+	bl nullsub_21
+	b _0800C3DE
+	.align 2, 0
+_0800C330: .4byte gMPlayTable
+_0800C334: .4byte gUnknown_3000FD8
+_0800C338:
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r6, r0, 24
+	ldrh r0, [r4, 0x2]
+	cmp r0, r5
+	bne _0800C35A
+	adds r0, r7, 0
+	bl m4aMPlayStop
+	movs r1, 0
+	movs r0, 0
+	strh r0, [r4]
+	mov r2, r8
+	strh r2, [r4, 0x2]
+	strh r0, [r4, 0x4]
+	strb r1, [r4, 0x6]
+_0800C35A:
+	cmp r6, 0
+	beq _0800C3DE
+	bl EnableInterrupts
+	b _0800C3DE
+_0800C364:
+	ldr r0, _0800C398
+	cmp r5, r0
+	bne _0800C3A8
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r4, r0, 24
+	ldr r0, _0800C39C
+	ldrh r0, [r0]
+	cmp r0, 0
+	beq _0800C38C
+	ldr r1, _0800C3A0
+	ldrh r0, [r1]
+	cmp r0, r8
+	beq _0800C38C
+	mov r0, r8
+	strh r0, [r1]
+	ldr r0, _0800C3A4
+	bl m4aMPlayStop
+_0800C38C:
+	cmp r4, 0
+	beq _0800C3DE
+	bl EnableInterrupts
+	b _0800C3DE
+	.align 2, 0
+_0800C398: .4byte 0x000003e6
+_0800C39C: .4byte gUnknown_202D690
+_0800C3A0: .4byte gUnknown_202D68E
+_0800C3A4: .4byte gUnknown_2000970
+_0800C3A8:
+	adds r0, r5, 0
+	bl sub_800CACC
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C3DE
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r4, r0, 24
+	ldr r0, _0800C3EC
+	ldrh r0, [r0]
+	cmp r0, 0
+	beq _0800C3D6
+	ldr r1, _0800C3F0
+	ldrh r0, [r1]
+	cmp r0, r5
+	bne _0800C3D6
+	mov r2, r8
+	strh r2, [r1]
+	ldr r0, _0800C3F4
+	bl m4aMPlayStop
+_0800C3D6:
+	cmp r4, 0
+	beq _0800C3DE
+	bl EnableInterrupts
+_0800C3DE:
+	pop {r3-r5}
+	mov r8, r3
+	mov r9, r4
+	mov r10, r5
+	pop {r4-r7}
+	pop {r0}
+	bx r0
+	.align 2, 0
+_0800C3EC: .4byte gUnknown_202D690
+_0800C3F0: .4byte gUnknown_202D68E
+_0800C3F4: .4byte gUnknown_2000970
+	thumb_func_end sub_800C298
+
+	thumb_func_start sub_800C3F8
+sub_800C3F8:
+	push {r4-r7,lr}
+	mov r7, r10
+	mov r6, r9
+	mov r5, r8
+	push {r5-r7}
+	lsls r0, 16
+	lsrs r4, r0, 16
+	lsls r1, 16
+	movs r0, 0x80
+	lsls r0, 17
+	cmp r1, r0
+	bls _0800C416
+	movs r0, 0x10
+	mov r9, r0
+	b _0800C422
+_0800C416:
+	lsrs r1, 20
+	mov r9, r1
+	cmp r1, 0
+	bne _0800C422
+	movs r1, 0x1
+	mov r9, r1
+_0800C422:
+	ldr r0, _0800C460
+	mov r8, r0
+	cmp r4, r8
+	bne _0800C496
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r0, 24
+	mov r10, r0
+	movs r7, 0x2
+	ldr r5, _0800C464
+	ldr r0, _0800C468
+	adds r6, r0, 0
+	adds r6, 0x18
+_0800C43E:
+	ldrh r0, [r5, 0x2]
+	cmp r0, r8
+	beq _0800C47E
+	lsls r0, r7, 16
+	lsrs r0, 16
+	bl sub_800CAF0
+	lsls r0, 24
+	lsrs r4, r0, 24
+	cmp r4, 0
+	beq _0800C46C
+	ldr r0, [r6]
+	mov r1, r9
+	bl m4aMPlayFadeOut
+	b _0800C47E
+	.align 2, 0
+_0800C460: .4byte 0x000003e5
+_0800C464: .4byte gUnknown_3000FE8
+_0800C468: .4byte gMPlayTable
+_0800C46C:
+	ldr r0, [r6]
+	bl m4aMPlayStop
+	strh r4, [r5]
+	mov r1, r8
+	strh r1, [r5, 0x2]
+	strh r4, [r5, 0x4]
+	movs r0, 0
+	strb r0, [r5, 0x6]
+_0800C47E:
+	adds r6, 0xC
+	adds r7, 0x1
+	adds r5, 0x8
+	cmp r7, 0x6
+	ble _0800C43E
+	mov r1, r10
+	cmp r1, 0
+	bne _0800C490
+	b _0800C5BE
+_0800C490:
+	bl EnableInterrupts
+	b _0800C5BE
+_0800C496:
+	adds r0, r4, 0
+	bl sub_800CAAC
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C508
+	adds r0, r4, 0
+	bl sub_800CAE0
+	lsls r0, 16
+	lsrs r4, r0, 16
+	lsls r1, r4, 3
+	ldr r0, _0800C4E4
+	adds r5, r1, r0
+	ldr r1, _0800C4E8
+	lsls r0, r4, 1
+	adds r0, r4
+	lsls r0, 2
+	adds r0, r1
+	ldr r6, [r0]
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r7, r0, 24
+	ldrh r0, [r5, 0x2]
+	cmp r0, r8
+	beq _0800C4FE
+	adds r0, r4, 0
+	bl sub_800CAF0
+	lsls r0, 24
+	lsrs r4, r0, 24
+	cmp r4, 0
+	beq _0800C4EC
+	adds r0, r6, 0
+	mov r1, r9
+	bl m4aMPlayFadeOut
+	b _0800C4FE
+	.align 2, 0
+_0800C4E4: .4byte gUnknown_3000FD8
+_0800C4E8: .4byte gMPlayTable
+_0800C4EC:
+	adds r0, r6, 0
+	bl m4aMPlayStop
+	movs r0, 0
+	strh r4, [r5]
+	mov r1, r8
+	strh r1, [r5, 0x2]
+	strh r4, [r5, 0x4]
+	strb r0, [r5, 0x6]
+_0800C4FE:
+	cmp r7, 0
+	beq _0800C5BE
+	bl EnableInterrupts
+	b _0800C5BE
+_0800C508:
+	ldr r0, _0800C53C
+	cmp r4, r0
+	bne _0800C564
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r5, r0, 24
+	ldr r0, _0800C540
+	ldrh r0, [r0]
+	cmp r0, 0
+	beq _0800C556
+	ldr r4, _0800C544
+	ldrh r0, [r4]
+	cmp r0, r8
+	beq _0800C556
+	movs r0, 0x1
+	bl sub_800CAF0
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C54C
+	ldr r0, _0800C548
+	mov r1, r9
+	bl m4aMPlayFadeOut
+	b _0800C556
+	.align 2, 0
+_0800C53C: .4byte 0x000003e6
+_0800C540: .4byte gUnknown_202D690
+_0800C544: .4byte gUnknown_202D68E
+_0800C548: .4byte gUnknown_2000970
+_0800C54C:
+	ldr r0, _0800C560
+	bl m4aMPlayStop
+	mov r0, r8
+	strh r0, [r4]
+_0800C556:
+	cmp r5, 0
+	beq _0800C5BE
+	bl EnableInterrupts
+	b _0800C5BE
+	.align 2, 0
+_0800C560: .4byte gUnknown_2000970
+_0800C564:
+	adds r0, r4, 0
+	bl sub_800CACC
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C5BE
+	bl DisableInterrupts
+	lsls r0, 24
+	lsrs r6, r0, 24
+	ldr r0, _0800C5A0
+	ldrh r0, [r0]
+	cmp r0, 0
+	beq _0800C5B6
+	ldr r5, _0800C5A4
+	ldrh r0, [r5]
+	cmp r0, r4
+	bne _0800C5B6
+	movs r0, 0x1
+	bl sub_800CAF0
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C5AC
+	ldr r0, _0800C5A8
+	mov r1, r9
+	bl m4aMPlayFadeOut
+	b _0800C5B6
+	.align 2, 0
+_0800C5A0: .4byte gUnknown_202D690
+_0800C5A4: .4byte gUnknown_202D68E
+_0800C5A8: .4byte gUnknown_2000970
+_0800C5AC:
+	ldr r0, _0800C5CC
+	bl m4aMPlayStop
+	mov r1, r8
+	strh r1, [r5]
+_0800C5B6:
+	cmp r6, 0
+	beq _0800C5BE
+	bl EnableInterrupts
+_0800C5BE:
+	pop {r3-r5}
+	mov r8, r3
+	mov r9, r4
+	mov r10, r5
+	pop {r4-r7}
+	pop {r0}
+	bx r0
+	.align 2, 0
+_0800C5CC: .4byte gUnknown_2000970
+	thumb_func_end sub_800C3F8
+
+	thumb_func_start sub_800C5D0
+sub_800C5D0:
+	push {r4,r5,lr}
+	lsls r0, 16
+	lsrs r4, r0, 16
+	adds r5, r4, 0
+	adds r0, r4, 0
+	bl sub_800CACC
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C600
+	ldr r0, _0800C5F8
+	ldrh r0, [r0]
+	cmp r0, 0
+	beq _0800C630
+	ldr r0, _0800C5FC
+	ldrh r0, [r0]
+	cmp r0, r4
+	bne _0800C630
+	movs r0, 0x1
+	b _0800C632
+	.align 2, 0
+_0800C5F8: .4byte gUnknown_202D690
+_0800C5FC: .4byte gUnknown_202D68E
+_0800C600:
+	adds r0, r4, 0
+	bl sub_800CAAC
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C630
+	adds r0, r4, 0
+	bl sub_800CAE0
+	lsls r0, 16
+	lsrs r0, 16
+	lsls r2, r0, 3
+	ldr r1, _0800C62C
+	adds r2, r1
+	cmp r0, 0x1
+	bls _0800C630
+	ldrh r0, [r2, 0x2]
+	cmp r0, r5
+	bne _0800C630
+	movs r0, 0x1
+	b _0800C632
+	.align 2, 0
+_0800C62C: .4byte gUnknown_3000FD8
+_0800C630:
+	movs r0, 0
+_0800C632:
+	pop {r4,r5}
+	pop {r1}
+	bx r1
+	thumb_func_end sub_800C5D0
+
+	thumb_func_start SoundVSync
+SoundVSync:
+	push {r4,lr}
+	bl DisableInterrupts
+	adds r4, r0, 0
+	lsls r4, 24
+	lsrs r4, 24
+	bl m4aSoundVSync
+	cmp r4, 0
+	beq _0800C650
+	bl EnableInterrupts
+_0800C650:
+	pop {r4}
+	pop {r0}
+	bx r0
+	thumb_func_end SoundVSync
+
+	thumb_func_start nullsub_18
+nullsub_18:
+	bx lr
+	thumb_func_end nullsub_18
+
+	thumb_func_start UpdateSound
+UpdateSound:
+	push {r4-r7,lr}
+	mov r7, r8
+	push {r7}
+	bl m4aSoundMain
+	ldr r4, _0800C680
+	ldrh r0, [r4]
+	cmp r0, 0
+	bne _0800C670
+	b _0800C7E0
+_0800C670:
+	cmp r0, 0x2
+	beq _0800C6C0
+	cmp r0, 0x2
+	bgt _0800C684
+	cmp r0, 0x1
+	beq _0800C68E
+	b _0800C8A2
+	.align 2, 0
+_0800C680: .4byte gUnknown_202D690
+_0800C684:
+	cmp r0, 0x3
+	beq _0800C700
+	cmp r0, 0x4
+	beq _0800C730
+	b _0800C8A2
+_0800C68E:
+	ldr r2, _0800C69C
+	ldrh r0, [r2]
+	cmp r0, 0
+	beq _0800C6A0
+	subs r0, 0x1
+	strh r0, [r2]
+	b _0800C8A2
+	.align 2, 0
+_0800C69C: .4byte gUnknown_202D692
+_0800C6A0:
+	ldr r3, _0800C6B4
+	ldrh r1, [r3]
+	ldr r0, _0800C6B8
+	cmp r1, r0
+	bne _0800C6BC
+	movs r0, 0x4
+	strh r0, [r4]
+	movs r0, 0x20
+	strh r0, [r2]
+	b _0800C8A2
+	.align 2, 0
+_0800C6B4: .4byte gUnknown_202D68E
+_0800C6B8: .4byte 0x000003e5
+_0800C6BC:
+	ldrh r0, [r3]
+	b _0800C6E4
+_0800C6C0:
+	ldr r0, _0800C6F0
+	ldrh r1, [r0]
+	ldr r0, _0800C6F4
+	cmp r1, r0
+	beq _0800C6D8
+	movs r0, 0
+	bl sub_800CAF0
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C6D8
+	b _0800C8A2
+_0800C6D8:
+	ldr r2, _0800C6F8
+	ldrh r1, [r2]
+	ldr r0, _0800C6FC
+	cmp r1, r0
+	beq _0800C718
+	ldrh r0, [r2]
+_0800C6E4:
+	bl m4aSongNumStart
+	movs r0, 0x3
+	strh r0, [r4]
+	b _0800C8A2
+	.align 2, 0
+_0800C6F0: .4byte gUnknown_202D68A
+_0800C6F4: .4byte 0x000003e7
+_0800C6F8: .4byte gUnknown_202D68E
+_0800C6FC: .4byte 0x000003e5
+_0800C700:
+	ldr r0, _0800C724
+	ldrh r1, [r0]
+	ldr r0, _0800C728
+	cmp r1, r0
+	beq _0800C718
+	movs r0, 0x1
+	bl sub_800CAF0
+	lsls r0, 24
+	cmp r0, 0
+	bne _0800C718
+	b _0800C8A2
+_0800C718:
+	movs r0, 0x4
+	strh r0, [r4]
+	ldr r1, _0800C72C
+	movs r0, 0x20
+	strh r0, [r1]
+	b _0800C8A2
+	.align 2, 0
+_0800C724: .4byte gUnknown_202D68E
+_0800C728: .4byte 0x000003e5
+_0800C72C: .4byte gUnknown_202D692
+_0800C730:
+	ldr r0, _0800C74C
+	ldrh r1, [r0]
+	ldr r0, _0800C750
+	cmp r1, r0
+	beq _0800C754
+	movs r0, 0x1
+	bl sub_800CAF0
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C748
+	b _0800C8A2
+_0800C748:
+	b _0800C75A
+	.align 2, 0
+_0800C74C: .4byte gUnknown_202D68E
+_0800C750: .4byte 0x000003e5
+_0800C754:
+	ldr r0, _0800C76C
+	bl m4aMPlayStop
+_0800C75A:
+	ldr r1, _0800C770
+	ldrh r0, [r1]
+	adds r2, r0, 0
+	cmp r2, 0
+	beq _0800C774
+	subs r0, 0x1
+	strh r0, [r1]
+	b _0800C8A2
+	.align 2, 0
+_0800C76C: .4byte gUnknown_2000970
+_0800C770: .4byte gUnknown_202D692
+_0800C774:
+	ldr r3, _0800C794
+	ldrh r1, [r3]
+	ldr r0, _0800C798
+	cmp r1, r0
+	beq _0800C7B4
+	ldr r1, _0800C79C
+	movs r0, 0x1
+	strh r0, [r1]
+	ldr r0, _0800C7A0
+	ldrb r0, [r0]
+	cmp r0, 0
+	beq _0800C7A4
+	ldrh r0, [r3]
+	bl m4aSongNumStart
+	b _0800C7BE
+	.align 2, 0
+_0800C794: .4byte gUnknown_202D68A
+_0800C798: .4byte 0x000003e7
+_0800C79C: .4byte gUnknown_202D688
+_0800C7A0: .4byte gUnknown_202D694
+_0800C7A4:
+	ldr r0, _0800C7B0
+	movs r1, 0x4
+	bl m4aMPlayFadeIn
+	b _0800C7BE
+	.align 2, 0
+_0800C7B0: .4byte gUnknown_20008F0
+_0800C7B4:
+	ldr r0, _0800C7CC
+	strh r2, [r0]
+	ldr r0, _0800C7D0
+	bl m4aMPlayStop
+_0800C7BE:
+	ldr r1, _0800C7D4
+	movs r0, 0
+	strh r0, [r1]
+	ldr r1, _0800C7D8
+	ldr r2, _0800C7DC
+	b _0800C84C
+	.align 2, 0
+_0800C7CC: .4byte gUnknown_202D688
+_0800C7D0: .4byte gUnknown_20008F0
+_0800C7D4: .4byte gUnknown_202D690
+_0800C7D8: .4byte gUnknown_202D68E
+_0800C7DC: .4byte 0x000003e5
+_0800C7E0:
+	ldr r5, _0800C810
+	ldrh r0, [r5]
+	cmp r0, 0
+	beq _0800C864
+	cmp r0, 0x3
+	bgt _0800C8A2
+	cmp r0, 0x2
+	bge _0800C81C
+	cmp r0, 0x1
+	bne _0800C8A2
+	ldr r0, _0800C814
+	ldrh r1, [r0]
+	ldr r0, _0800C818
+	cmp r1, r0
+	beq _0800C80A
+	movs r0, 0
+	bl sub_800CAF0
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C8A2
+_0800C80A:
+	movs r0, 0x2
+	strh r0, [r5]
+	b _0800C8A2
+	.align 2, 0
+_0800C810: .4byte gUnknown_202D688
+_0800C814: .4byte gUnknown_202D68A
+_0800C818: .4byte 0x000003e7
+_0800C81C:
+	ldr r0, _0800C834
+	ldrh r1, [r0]
+	ldr r0, _0800C838
+	cmp r1, r0
+	beq _0800C83C
+	movs r0, 0
+	bl sub_800CAF0
+	lsls r0, 24
+	cmp r0, 0
+	bne _0800C8A2
+	b _0800C842
+	.align 2, 0
+_0800C834: .4byte gUnknown_202D68A
+_0800C838: .4byte 0x000003e7
+_0800C83C:
+	ldr r0, _0800C854
+	bl m4aMPlayStop
+_0800C842:
+	ldr r1, _0800C858
+	movs r0, 0
+	strh r0, [r1]
+	ldr r1, _0800C85C
+	ldr r2, _0800C860
+_0800C84C:
+	adds r0, r2, 0
+	strh r0, [r1]
+	b _0800C8A2
+	.align 2, 0
+_0800C854: .4byte gUnknown_20008F0
+_0800C858: .4byte gUnknown_202D688
+_0800C85C: .4byte gUnknown_202D68A
+_0800C860: .4byte 0x000003e7
+_0800C864:
+	movs r0, 0
+	bl sub_800CAF0
+	lsls r0, 24
+	lsrs r0, 24
+	cmp r0, 0
+	bne _0800C8A2
+	ldr r6, _0800C890
+	ldrh r2, [r6]
+	adds r1, r2, 0
+	ldr r4, _0800C894
+	cmp r1, r4
+	beq _0800C89C
+	movs r0, 0x1
+	strh r0, [r5]
+	ldr r0, _0800C898
+	strh r2, [r0]
+	adds r0, r1, 0
+	bl m4aSongNumStart
+	strh r4, [r6]
+	b _0800C8A2
+	.align 2, 0
+_0800C890: .4byte gUnknown_202D68C
+_0800C894: .4byte 0x000003e7
+_0800C898: .4byte gUnknown_202D68A
+_0800C89C:
+	strh r0, [r5]
+	ldr r0, _0800C8C4
+	strh r1, [r0]
+_0800C8A2:
+	movs r5, 0x2
+	ldr r4, _0800C8C8
+	ldr r0, _0800C8CC
+	mov r8, r0
+	movs r6, 0x18
+	movs r7, 0
+_0800C8AE:
+	ldrh r1, [r4, 0x2]
+	cmp r1, r8
+	beq _0800C926
+	ldrh r0, [r4]
+	cmp r0, 0x1
+	beq _0800C8D0
+	cmp r0, 0x1
+	ble _0800C926
+	cmp r0, 0x2
+	beq _0800C8F0
+	b _0800C926
+	.align 2, 0
+_0800C8C4: .4byte gUnknown_202D68A
+_0800C8C8: .4byte gUnknown_3000FE8
+_0800C8CC: .4byte 0x000003e5
+_0800C8D0:
+	ldr r0, _0800C8EC
+	cmp r1, r0
+	beq _0800C8E4
+	lsls r0, r5, 16
+	lsrs r0, 16
+	bl sub_800CAF0
+	lsls r0, 24
+	cmp r0, 0
+	beq _0800C926
+_0800C8E4:
+	movs r0, 0x2
+	strh r0, [r4]
+	b _0800C926
+	.align 2, 0
+_0800C8EC: .4byte 0x000003e7
+_0800C8F0:
+	lsls r0, r5, 16
+	lsrs r0, 16
+	bl sub_800CAF0
+	lsls r0, 24
+	lsrs r0, 24
+	cmp r0, 0
+	beq _0800C91C
+	ldrb r0, [r4, 0x6]
+	cmp r0, 0
+	beq _0800C926
+	strb r7, [r4, 0x6]
+	ldr r0, _0800C918
+	adds r0, r6, r0
+	ldr r0, [r0]
+	ldrh r2, [r4, 0x4]
+	movs r1, 0xFF
+	bl m4aMPlayVolumeControl
+	b _0800C926
+	.align 2, 0
+_0800C918: .4byte gMPlayTable
+_0800C91C:
+	strh r0, [r4]
+	mov r1, r8
+	strh r1, [r4, 0x2]
+	strh r0, [r4, 0x4]
+	strb r7, [r4, 0x6]
+_0800C926:
+	adds r6, 0xC
+	adds r5, 0x1
+	adds r4, 0x8
+	cmp r5, 0x6
+	ble _0800C8AE
+	pop {r3}
+	mov r8, r3
+	pop {r4-r7}
+	pop {r0}
+	bx r0
+	thumb_func_end UpdateSound
+
+        .align 2,0