decompile through sub_51C3C

8 files changed, 517 insertions, 1271 deletions

diff --git a/.gitignore b/.gitignore
index bf28bd3..725d77c 100755
--- a/.gitignore
+++ b/.gitignore
@@ -29,4 +29,4 @@ build/
 *.ddump
 baserom.*
 *.swp
-
+*.swo
diff --git a/asm/options.s b/asm/options.s
index 438dee1..d2938b9 100755
--- a/asm/options.s
+++ b/asm/options.s
@@ -4,1263 +4,6 @@
 
 	.text
 
-	thumb_func_start OptionsMain
-OptionsMain: @ 0x08051220
-	push {lr}
-	ldr r1, _08051238 @ =gUnknown_08527F08
-	ldr r0, _0805123C @ =gMain
-	ldrb r0, [r0, #3]
-	lsls r0, r0, #2
-	adds r0, r0, r1
-	ldr r0, [r0]
-	bl _call_via_r0
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08051238: .4byte gUnknown_08527F08
-_0805123C: .4byte gMain
-
-	thumb_func_start sub_51240
-sub_51240: @ 0x08051240
-	push {r4, r5, r6, r7, lr}
-	mov r7, sb
-	mov r6, r8
-	push {r6, r7}
-	sub sp, #4
-	bl sub_438
-	movs r2, #0x80
-	lsls r2, r2, #0x13
-	movs r1, #0x84
-	lsls r1, r1, #5
-	adds r0, r1, #0
-	strh r0, [r2]
-	ldr r1, _08051358 @ =0x04000008
-	movs r0, #4
-	strh r0, [r1]
-	ldrh r0, [r2]
-	movs r3, #0x80
-	lsls r3, r3, #1
-	adds r1, r3, #0
-	orrs r0, r1
-	strh r0, [r2]
-	ldr r1, _0805135C @ =0x0400000A
-	adds r3, #9
-	adds r0, r3, #0
-	strh r0, [r1]
-	ldrh r0, [r2]
-	adds r3, #0xf7
-	adds r1, r3, #0
-	orrs r0, r1
-	strh r0, [r2]
-	ldr r0, _08051360 @ =gMain
-	mov sb, r0
-	ldrh r0, [r2]
-	mov r1, sb
-	strh r0, [r1, #0x16]
-	ldr r5, _08051364 @ =0x040000D4
-	ldr r0, _08051368 @ =gUnknown_0852B468
-	str r0, [r5]
-	movs r0, #0xa0
-	lsls r0, r0, #0x13
-	str r0, [r5, #4]
-	ldr r0, _0805136C @ =0x80000100
-	str r0, [r5, #8]
-	ldr r0, [r5, #8]
-	ldr r0, _08051370 @ =gUnknown_08528828
-	str r0, [r5]
-	ldr r0, _08051374 @ =0x06004000
-	str r0, [r5, #4]
-	ldr r0, _08051378 @ =0x80000C00
-	str r0, [r5, #8]
-	ldr r0, [r5, #8]
-	ldr r0, _0805137C @ =gUnknown_0852A848
-	str r0, [r5]
-	ldr r0, _08051380 @ =0x06008000
-	str r0, [r5, #4]
-	ldr r0, _08051384 @ =0x80000600
-	str r0, [r5, #8]
-	ldr r0, [r5, #8]
-	ldr r0, _08051388 @ =gUnknown_08528028
-	str r0, [r5]
-	ldr r7, _0805138C @ =gUnknown_03005C00
-	str r7, [r5, #4]
-	ldr r6, _08051390 @ =0x80000400
-	str r6, [r5, #8]
-	ldr r0, [r5, #8]
-	str r7, [r5]
-	movs r3, #0xc0
-	lsls r3, r3, #0x13
-	mov r8, r3
-	str r3, [r5, #4]
-	str r6, [r5, #8]
-	ldr r0, [r5, #8]
-	ldr r0, _08051394 @ =gGameBoyPlayerEnabled
-	ldr r0, [r0]
-	cmp r0, #1
-	beq _080512F8
-	movs r4, #2
-	str r4, [sp]
-	movs r0, #0x12
-	movs r1, #4
-	movs r2, #2
-	movs r3, #1
-	bl sub_1068C
-	str r4, [sp]
-	movs r0, #0x12
-	movs r1, #5
-	movs r2, #3
-	movs r3, #2
-	bl sub_1068C
-_080512F8:
-	str r7, [r5]
-	mov r0, r8
-	str r0, [r5, #4]
-	str r6, [r5, #8]
-	ldr r0, [r5, #8]
-	ldr r0, _08051398 @ =gUnknown_0852A048
-	str r0, [r5]
-	ldr r0, _0805139C @ =0x06000800
-	str r0, [r5, #4]
-	str r6, [r5, #8]
-	ldr r0, [r5, #8]
-	ldr r0, _080513A0 @ =gGBAButtonIcons_Pals
-	str r0, [r5]
-	ldr r0, _080513A4 @ =0x05000200
-	str r0, [r5, #4]
-	ldr r0, _080513A8 @ =0x80000030
-	str r0, [r5, #8]
-	ldr r0, [r5, #8]
-	ldr r0, _080513AC @ =gOptionsSprites_Gfx
-	str r0, [r5]
-	ldr r0, _080513B0 @ =0x06010000
-	str r0, [r5, #4]
-	ldr r0, _080513B4 @ =0x80001010
-	str r0, [r5, #8]
-	ldr r0, [r5, #8]
-	bl sub_513B8
-	bl sub_51C9C
-	bl m4aMPlayAllStop
-	bl sub_CBC
-	bl sub_24C
-	bl sub_10C0
-	mov r1, sb
-	ldrb r0, [r1, #3]
-	adds r0, #1
-	strb r0, [r1, #3]
-	add sp, #4
-	pop {r3, r4}
-	mov r8, r3
-	mov sb, r4
-	pop {r4, r5, r6, r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08051358: .4byte 0x04000008
-_0805135C: .4byte 0x0400000A
-_08051360: .4byte gMain
-_08051364: .4byte 0x040000D4
-_08051368: .4byte gUnknown_0852B468
-_0805136C: .4byte 0x80000100
-_08051370: .4byte gUnknown_08528828
-_08051374: .4byte 0x06004000
-_08051378: .4byte 0x80000C00
-_0805137C: .4byte gUnknown_0852A848
-_08051380: .4byte 0x06008000
-_08051384: .4byte 0x80000600
-_08051388: .4byte gUnknown_08528028
-_0805138C: .4byte gUnknown_03005C00
-_08051390: .4byte 0x80000400
-_08051394: .4byte gGameBoyPlayerEnabled
-_08051398: .4byte gUnknown_0852A048
-_0805139C: .4byte 0x06000800
-_080513A0: .4byte gGBAButtonIcons_Pals
-_080513A4: .4byte 0x05000200
-_080513A8: .4byte 0x80000030
-_080513AC: .4byte gOptionsSprites_Gfx
-_080513B0: .4byte 0x06010000
-_080513B4: .4byte 0x80001010
-
-	thumb_func_start sub_513B8
-sub_513B8: @ 0x080513B8
-	push {r4, r5, r6, lr}
-	ldr r0, _08051468 @ =gUnknown_02002920
-	mov ip, r0
-	movs r2, #0
-	movs r1, #0
-	strh r1, [r0]
-	strh r1, [r0, #2]
-	strh r1, [r0, #4]
-	movs r3, #1
-	movs r0, #1
-	mov r4, ip
-	strh r0, [r4, #6]
-	strh r1, [r4, #8]
-	strh r1, [r4, #0xa]
-	ldr r0, _0805146C @ =gMain+0x74
-	adds r0, #0xcf
-	ldrb r0, [r0]
-	strh r0, [r4, #0xc]
-	strh r1, [r4, #0xe]
-	strh r1, [r4, #0x10]
-	strb r2, [r4, #0x12]
-	strb r2, [r4, #0x13]
-	strb r3, [r4, #0x14]
-	strb r2, [r4, #0x15]
-	strb r2, [r4, #0x16]
-	strb r3, [r4, #0x17]
-	strh r1, [r4, #0x18]
-	mov r2, ip
-	movs r3, #0
-	movs r1, #5
-	adds r0, r2, #0
-	adds r0, #0x1f
-_080513F8:
-	strb r3, [r0]
-	subs r0, #1
-	subs r1, #1
-	cmp r1, #0
-	bge _080513F8
-	movs r0, #0
-	strh r0, [r2, #0x20]
-	strh r0, [r2, #0x22]
-	movs r3, #0xa
-	movs r1, #1
-	adds r0, r2, #0
-	adds r0, #0x26
-_08051410:
-	strh r3, [r0]
-	subs r0, #2
-	subs r1, #1
-	cmp r1, #0
-	bge _08051410
-	movs r0, #0
-	strh r0, [r2, #0x28]
-	movs r1, #0
-	ldr r6, _08051470 @ =gUnknown_02031AF0
-	ldr r5, _08051474 @ =gUnknown_08527ED6
-_08051424:
-	adds r4, r1, #1
-	lsls r0, r1, #2
-	adds r0, r0, r1
-	lsls r0, r0, #1
-	adds r2, r0, r5
-	adds r1, r0, r6
-	movs r3, #9
-_08051432:
-	ldrb r0, [r2]
-	strb r0, [r1]
-	adds r2, #1
-	adds r1, #1
-	subs r3, #1
-	cmp r3, #0
-	bge _08051432
-	adds r1, r4, #0
-	cmp r1, #3
-	ble _08051424
-	bl sub_52528
-	ldr r0, _08051478 @ =gGameBoyPlayerEnabled
-	ldr r4, [r0]
-	cmp r4, #1
-	bne _0805147C
-	ldr r3, _08051468 @ =gUnknown_02002920
-	ldr r0, _0805146C @ =gMain+0x74
-	adds r0, #0xcd
-	ldrb r1, [r0]
-	adds r2, r3, #0
-	adds r2, #0x2a
-	strb r1, [r2]
-	strb r4, [r0]
-	adds r2, r3, #0
-	b _0805148C
-	.align 2, 0
-_08051468: .4byte gUnknown_02002920
-_0805146C: .4byte gMain+0x74
-_08051470: .4byte gUnknown_02031AF0
-_08051474: .4byte gUnknown_08527ED6
-_08051478: .4byte gGameBoyPlayerEnabled
-_0805147C:
-	ldr r2, _080514B0 @ =gUnknown_02002920
-	adds r0, r2, #0
-	adds r0, #0x2a
-	movs r1, #0
-	strb r1, [r0]
-	ldr r0, _080514B4 @ =gMain+0x74
-	adds r0, #0xcd
-	strb r1, [r0]
-_0805148C:
-	adds r1, r2, #0
-	adds r1, #0x2e
-	movs r0, #0
-	strb r0, [r1]
-	subs r1, #3
-	strb r0, [r1]
-	adds r1, #1
-	strb r0, [r1]
-	adds r1, #1
-	strb r0, [r1]
-	adds r1, #2
-	strb r0, [r1]
-	adds r1, #1
-	strb r0, [r1]
-	pop {r4, r5, r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080514B0: .4byte gUnknown_02002920
-_080514B4: .4byte gMain+0x74
-
-	thumb_func_start sub_514B8
-sub_514B8: @ 0x080514B8
-	push {r4, r5, r6, r7, lr}
-	bl sub_51C9C
-	ldr r0, _080514D4 @ =gUnknown_02002920
-	movs r1, #0
-	ldrsh r0, [r0, r1]
-	cmp r0, #4
-	bls _080514CA
-	b _08051B98
-_080514CA:
-	lsls r0, r0, #2
-	ldr r1, _080514D8 @ =_080514DC
-	adds r0, r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_080514D4: .4byte gUnknown_02002920
-_080514D8: .4byte _080514DC
-_080514DC: @ jump table
-	.4byte _080514F0 @ case 0
-	.4byte _080517A8 @ case 1
-	.4byte _080518D4 @ case 2
-	.4byte _08051A08 @ case 3
-	.4byte _08051AB8 @ case 4
-_080514F0:
-	ldr r0, _08051514 @ =gMain
-	ldrh r1, [r0, #0x18]
-	movs r0, #0x40
-	ands r0, r1
-	cmp r0, #0
-	beq _0805152C
-	ldr r4, _08051518 @ =gUnknown_02002920
-	movs r2, #0xa
-	ldrsh r0, [r4, r2]
-	cmp r0, #0xd
-	beq _0805156C
-	cmp r0, #0xe
-	bne _0805151C
-	movs r0, #0x67
-	bl m4aSongNumStart
-	movs r0, #0xd
-	b _0805156A
-	.align 2, 0
-_08051514: .4byte gMain
-_08051518: .4byte gUnknown_02002920
-_0805151C:
-	cmp r0, #0
-	ble _0805156C
-	movs r0, #0x67
-	bl m4aSongNumStart
-	ldrh r0, [r4, #0xa]
-	subs r0, #1
-	b _0805156A
-_0805152C:
-	movs r0, #0x80
-	ands r0, r1
-	cmp r0, #0
-	beq _0805156C
-	ldr r4, _0805154C @ =gUnknown_02002920
-	movs r3, #0xa
-	ldrsh r0, [r4, r3]
-	cmp r0, #5
-	bgt _08051550
-	movs r0, #0x67
-	bl m4aSongNumStart
-	ldrh r0, [r4, #0xa]
-	adds r0, #1
-	b _0805156A
-	.align 2, 0
-_0805154C: .4byte gUnknown_02002920
-_08051550:
-	cmp r0, #0xd
-	bne _0805155E
-	movs r0, #0x67
-	bl m4aSongNumStart
-	movs r0, #0xe
-	b _0805156A
-_0805155E:
-	cmp r0, #0xe
-	bne _0805156C
-	movs r0, #0x67
-	bl m4aSongNumStart
-	movs r0, #2
-_0805156A:
-	strh r0, [r4, #0xa]
-_0805156C:
-	ldr r0, _080515E8 @ =gMain
-	ldrh r1, [r0, #0x18]
-	movs r0, #0x10
-	ands r0, r1
-	cmp r0, #0
-	beq _08051594
-	ldr r0, _080515EC @ =gGameBoyPlayerEnabled
-	ldr r0, [r0]
-	cmp r0, #1
-	bne _08051594
-	ldr r4, _080515F0 @ =gUnknown_02002920
-	ldrh r0, [r4, #0xa]
-	cmp r0, #1
-	bhi _08051594
-	movs r0, #0x67
-	bl m4aSongNumStart
-	ldrh r0, [r4, #0xa]
-	adds r0, #0xd
-	strh r0, [r4, #0xa]
-_08051594:
-	ldr r0, _080515E8 @ =gMain
-	ldrh r1, [r0, #0x18]
-	movs r0, #0x20
-	ands r0, r1
-	cmp r0, #0
-	beq _080515C2
-	ldr r0, _080515EC @ =gGameBoyPlayerEnabled
-	ldr r0, [r0]
-	cmp r0, #1
-	bne _080515C2
-	ldr r4, _080515F0 @ =gUnknown_02002920
-	ldrh r0, [r4, #0xa]
-	subs r0, #0xd
-	lsls r0, r0, #0x10
-	lsrs r0, r0, #0x10
-	cmp r0, #1
-	bhi _080515C2
-	movs r0, #0x67
-	bl m4aSongNumStart
-	ldrh r0, [r4, #0xa]
-	subs r0, #0xd
-	strh r0, [r4, #0xa]
-_080515C2:
-	ldr r4, _080515E8 @ =gMain
-	ldrh r1, [r4, #0x18]
-	movs r0, #1
-	ands r0, r1
-	cmp r0, #0
-	bne _080515D0
-	b _0805177C
-_080515D0:
-	ldr r0, _080515F0 @ =gUnknown_02002920
-	movs r6, #0xa
-	ldrsh r0, [r0, r6]
-	cmp r0, #0xe
-	bls _080515DC
-	b _08051A96
-_080515DC:
-	lsls r0, r0, #2
-	ldr r1, _080515F4 @ =_080515F8
-	adds r0, r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_080515E8: .4byte gMain
-_080515EC: .4byte gGameBoyPlayerEnabled
-_080515F0: .4byte gUnknown_02002920
-_080515F4: .4byte _080515F8
-_080515F8: @ jump table
-	.4byte _08051634 @ case 0
-	.4byte _08051674 @ case 1
-	.4byte _080516B0 @ case 2
-	.4byte _080516B0 @ case 3
-	.4byte _080516B0 @ case 4
-	.4byte _080516B0 @ case 5
-	.4byte _080516D0 @ case 6
-	.4byte _08051A96 @ case 7
-	.4byte _08051A96 @ case 8
-	.4byte _08051A96 @ case 9
-	.4byte _08051A96 @ case 10
-	.4byte _08051A96 @ case 11
-	.4byte _08051A96 @ case 12
-	.4byte _08051738 @ case 13
-	.4byte _080516F8 @ case 14
-_08051634:
-	movs r0, #0x65
-	bl m4aSongNumStart
-	ldr r3, _08051670 @ =gUnknown_02002920
-	movs r4, #0
-	movs r1, #0
-	movs r2, #1
-	movs r0, #1
-	strh r0, [r3]
-	strh r1, [r3, #0x18]
-	adds r0, r3, #0
-	adds r0, #0x30
-	strb r2, [r0]
-	adds r1, r3, #0
-	adds r1, #0x2e
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	cmp r0, #1
-	beq _0805165C
-	b _08051A96
-_0805165C:
-	adds r0, r3, #0
-	adds r0, #0x2b
-	strb r4, [r0]
-	adds r0, #2
-	strb r4, [r0]
-	subs r0, #1
-	strb r4, [r0]
-	strb r4, [r1]
-	b _08051A96
-	.align 2, 0
-_08051670: .4byte gUnknown_02002920
-_08051674:
-	movs r0, #0x65
-	bl m4aSongNumStart
-	ldr r2, _080516AC @ =gUnknown_02002920
-	movs r3, #0
-	movs r1, #0
-	movs r0, #2
-	strh r0, [r2]
-	strh r1, [r2, #0x18]
-	adds r1, r2, #0
-	adds r1, #0x30
-	movs r0, #1
-	strb r0, [r1]
-	subs r1, #2
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	cmp r0, #1
-	beq _0805169A
-	b _08051A96
-_0805169A:
-	adds r0, r2, #0
-	adds r0, #0x2b
-	strb r3, [r0]
-	adds r0, #2
-	strb r3, [r0]
-	subs r0, #1
-	strb r3, [r0]
-	strb r3, [r1]
-	b _08051A96
-	.align 2, 0
-_080516AC: .4byte gUnknown_02002920
-_080516B0:
-	movs r0, #0x65
-	bl m4aSongNumStart
-	ldr r0, _080516C8 @ =gUnknown_02002920
-	ldrh r1, [r0, #0xa]
-	subs r1, #2
-	strh r1, [r0, #0xc]
-	ldr r0, _080516CC @ =gMain+0x74
-	adds r0, #0xcf
-	strb r1, [r0]
-	b _08051A96
-	.align 2, 0
-_080516C8: .4byte gUnknown_02002920
-_080516CC: .4byte gMain+0x74
-_080516D0:
-	movs r0, #0x65
-	bl m4aSongNumStart
-	ldr r2, _080516F0 @ =gUnknown_02002920
-	ldrh r1, [r2, #0xa]
-	subs r1, #2
-	strh r1, [r2, #0xc]
-	ldr r0, _080516F4 @ =gMain+0x74
-	adds r0, #0xcf
-	strb r1, [r0]
-	movs r0, #7
-	strh r0, [r2, #0xa]
-	movs r0, #3
-	strh r0, [r2]
-	b _08051A96
-	.align 2, 0
-_080516F0: .4byte gUnknown_02002920
-_080516F4: .4byte gMain+0x74
-_080516F8:
-	ldr r0, _08051730 @ =gGameBoyPlayerEnabled
-	ldr r0, [r0]
-	cmp r0, #1
-	beq _08051702
-	b _08051A96
-_08051702:
-	movs r0, #0x65
-	bl m4aSongNumStart
-	ldr r1, _08051734 @ =gUnknown_02002920
-	adds r0, r1, #0
-	adds r0, #0x2d
-	movs r2, #0
-	strb r2, [r0]
-	adds r3, r1, #0
-	adds r3, #0x2e
-	movs r0, #0
-	ldrsb r0, [r3, r0]
-	cmp r0, #1
-	bne _08051720
-	strb r2, [r3]
-_08051720:
-	adds r0, r1, #0
-	adds r0, #0x2b
-	strb r2, [r0]
-	adds r0, #1
-	strb r2, [r0]
-	subs r0, #2
-	strb r2, [r0]
-	b _08051A96
-	.align 2, 0
-_08051730: .4byte gGameBoyPlayerEnabled
-_08051734: .4byte gUnknown_02002920
-_08051738:
-	ldr r0, _08051774 @ =gGameBoyPlayerEnabled
-	ldr r4, [r0]
-	cmp r4, #1
-	beq _08051742
-	b _08051A96
-_08051742:
-	movs r0, #0x65
-	bl m4aSongNumStart
-	movs r0, #0xb
-	bl sub_11B0
-	ldr r2, _08051778 @ =gUnknown_02002920
-	adds r1, r2, #0
-	adds r1, #0x2e
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	cmp r0, #0
-	bne _0805175E
-	strb r4, [r1]
-_0805175E:
-	adds r1, r2, #0
-	adds r1, #0x2b
-	movs r0, #0
-	strb r0, [r1]
-	adds r1, #1
-	strb r0, [r1]
-	adds r0, r2, #0
-	adds r0, #0x2a
-	strb r4, [r0]
-	b _08051A96
-	.align 2, 0
-_08051774: .4byte gGameBoyPlayerEnabled
-_08051778: .4byte gUnknown_02002920
-_0805177C:
-	movs r0, #2
-	ands r0, r1
-	cmp r0, #0
-	bne _08051786
-	b _08051A96
-_08051786:
-	movs r0, #0x66
-	bl m4aSongNumStart
-	ldrb r0, [r4, #3]
-	adds r0, #1
-	strb r0, [r4, #3]
-	ldr r7, _080517A4 @ =0x00000143
-	adds r0, r4, r7
-	ldrb r0, [r0]
-	lsls r0, r0, #0x18
-	asrs r0, r0, #0x18
-	bl sub_525CC
-	b _08051A96
-	.align 2, 0
-_080517A4: .4byte 0x00000143
-_080517A8:
-	ldr r1, _080517C8 @ =gMain
-	ldrh r2, [r1, #0x1c]
-	movs r0, #0x20
-	ands r0, r2
-	adds r3, r1, #0
-	cmp r0, #0
-	beq _080517D0
-	ldr r0, _080517CC @ =gUnknown_02002920
-	movs r2, #0x18
-	ldrsh r1, [r0, r2]
-	adds r4, r0, #0
-	cmp r1, #0
-	bne _080517EC
-	ldrh r0, [r4, #0xe]
-	subs r0, #1
-	b _080517E6
-	.align 2, 0
-_080517C8: .4byte gMain
-_080517CC: .4byte gUnknown_02002920
-_080517D0:
-	movs r0, #0x10
-	ands r0, r2
-	ldr r4, _080517FC @ =gUnknown_02002920
-	cmp r0, #0
-	beq _080517EC
-	movs r6, #0x18
-	ldrsh r0, [r4, r6]
-	cmp r0, #0
-	bne _080517EC
-	ldrh r0, [r4, #0xe]
-	adds r0, #1
-_080517E6:
-	strh r0, [r4, #0xe]
-	movs r0, #0xa
-	strh r0, [r4, #0x18]
-_080517EC:
-	ldrh r1, [r3, #0x18]
-	movs r0, #0x40
-	ands r0, r1
-	cmp r0, #0
-	beq _08051800
-	ldrh r0, [r4, #0xe]
-	adds r0, #0xa
-	b _0805180C
-	.align 2, 0
-_080517FC: .4byte gUnknown_02002920
-_08051800:
-	movs r0, #0x80
-	ands r0, r1
-	cmp r0, #0
-	beq _0805180E
-	ldrh r0, [r4, #0xe]
-	subs r0, #0xa
-_0805180C:
-	strh r0, [r4, #0xe]
-_0805180E:
-	ldr r5, _08051880 @ =gUnknown_02002920
-	movs r7, #0xe
-	ldrsh r0, [r5, r7]
-	cmp r0, #0
-	bge _0805181C
-	movs r0, #0x21
-	strh r0, [r5, #0xe]
-_0805181C:
-	movs r1, #0xe
-	ldrsh r0, [r5, r1]
-	cmp r0, #0x21
-	ble _08051828
-	movs r0, #0
-	strh r0, [r5, #0xe]
-_08051828:
-	ldrh r4, [r5, #0xe]
-	adds r4, #1
-	lsls r4, r4, #0x10
-	asrs r4, r4, #0x10
-	adds r0, r4, #0
-	movs r1, #0x64
-	bl __divsi3
-	strb r0, [r5, #0x12]
-	adds r0, r4, #0
-	movs r1, #0x64
-	bl __modsi3
-	adds r4, r0, #0
-	lsls r4, r4, #0x10
-	asrs r4, r4, #0x10
-	adds r0, r4, #0
-	movs r1, #0xa
-	bl __divsi3
-	strb r0, [r5, #0x13]
-	adds r0, r4, #0
-	movs r1, #0xa
-	bl __modsi3
-	strb r0, [r5, #0x14]
-	ldr r0, _08051884 @ =gMain
-	ldrh r1, [r0, #0x18]
-	movs r4, #1
-	ands r4, r1
-	cmp r4, #0
-	beq _0805188C
-	bl m4aMPlayAllStop
-	ldr r0, _08051888 @ =gUnknown_08527D22
-	movs r2, #0xe
-	ldrsh r1, [r5, r2]
-	lsls r1, r1, #1
-	adds r1, r1, r0
-	ldrh r0, [r1]
-	bl m4aSongNumStart
-	b _080518AA
-	.align 2, 0
-_08051880: .4byte gUnknown_02002920
-_08051884: .4byte gMain
-_08051888: .4byte gUnknown_08527D22
-_0805188C:
-	movs r0, #2
-	ands r0, r1
-	cmp r0, #0
-	beq _080518AA
-	bl m4aMPlayAllStop
-	movs r0, #0x66
-	bl m4aSongNumStart
-	movs r1, #0
-	strh r4, [r5, #4]
-	adds r0, r5, #0
-	adds r0, #0x30
-	strb r1, [r0]
-	strh r4, [r5]
-_080518AA:
-	ldr r0, _080518CC @ =gMain
-	ldr r0, [r0, #0x4c]
-	movs r1, #7
-	ands r0, r1
-	cmp r0, #0
-	bne _080518C0
-	ldr r2, _080518D0 @ =gUnknown_02002920
-	ldrh r1, [r2, #4]
-	movs r0, #1
-	subs r0, r0, r1
-	strh r0, [r2, #4]
-_080518C0:
-	ldr r1, _080518D0 @ =gUnknown_02002920
-	ldrh r2, [r1, #0x18]
-	movs r3, #0x18
-	ldrsh r0, [r1, r3]
-	b _080519F4
-	.align 2, 0
-_080518CC: .4byte gMain
-_080518D0: .4byte gUnknown_02002920
-_080518D4:
-	ldr r1, _080518F4 @ =gMain
-	ldrh r2, [r1, #0x1c]
-	movs r0, #0x20
-	ands r0, r2
-	adds r3, r1, #0
-	cmp r0, #0
-	beq _080518FC
-	ldr r0, _080518F8 @ =gUnknown_02002920
-	movs r6, #0x18
-	ldrsh r1, [r0, r6]
-	adds r4, r0, #0
-	cmp r1, #0
-	bne _08051918
-	ldrh r0, [r4, #0x10]
-	subs r0, #1
-	b _08051912
-	.align 2, 0
-_080518F4: .4byte gMain
-_080518F8: .4byte gUnknown_02002920
-_080518FC:
-	movs r0, #0x10
-	ands r0, r2
-	ldr r4, _08051928 @ =gUnknown_02002920
-	cmp r0, #0
-	beq _08051918
-	movs r7, #0x18
-	ldrsh r0, [r4, r7]
-	cmp r0, #0
-	bne _08051918
-	ldrh r0, [r4, #0x10]
-	adds r0, #1
-_08051912:
-	strh r0, [r4, #0x10]
-	movs r0, #0xa
-	strh r0, [r4, #0x18]
-_08051918:
-	ldrh r1, [r3, #0x18]
-	movs r0, #0x40
-	ands r0, r1
-	cmp r0, #0
-	beq _0805192C
-	ldrh r0, [r4, #0x10]
-	adds r0, #0xa
-	b _08051938
-	.align 2, 0
-_08051928: .4byte gUnknown_02002920
-_0805192C:
-	movs r0, #0x80
-	ands r0, r1
-	cmp r0, #0
-	beq _0805193A
-	ldrh r0, [r4, #0x10]
-	subs r0, #0xa
-_08051938:
-	strh r0, [r4, #0x10]
-_0805193A:
-	ldr r5, _080519AC @ =gUnknown_02002920
-	movs r1, #0x10
-	ldrsh r0, [r5, r1]
-	cmp r0, #0
-	bge _08051948
-	movs r0, #0xb7
-	strh r0, [r5, #0x10]
-_08051948:
-	movs r2, #0x10
-	ldrsh r0, [r5, r2]
-	cmp r0, #0xb7
-	ble _08051954
-	movs r0, #0
-	strh r0, [r5, #0x10]
-_08051954:
-	ldrh r4, [r5, #0x10]
-	adds r4, #1
-	lsls r4, r4, #0x10
-	asrs r4, r4, #0x10
-	adds r0, r4, #0
-	movs r1, #0x64
-	bl __divsi3
-	strb r0, [r5, #0x15]
-	adds r0, r4, #0
-	movs r1, #0x64
-	bl __modsi3
-	adds r4, r0, #0
-	lsls r4, r4, #0x10
-	asrs r4, r4, #0x10
-	adds r0, r4, #0
-	movs r1, #0xa
-	bl __divsi3
-	strb r0, [r5, #0x16]
-	adds r0, r4, #0
-	movs r1, #0xa
-	bl __modsi3
-	strb r0, [r5, #0x17]
-	ldr r0, _080519B0 @ =gMain
-	ldrh r1, [r0, #0x18]
-	movs r4, #1
-	ands r4, r1
-	cmp r4, #0
-	beq _080519B8
-	bl m4aMPlayAllStop
-	ldr r0, _080519B4 @ =gUnknown_08527D66
-	movs r3, #0x10
-	ldrsh r1, [r5, r3]
-	lsls r1, r1, #1
-	adds r1, r1, r0
-	ldrh r0, [r1]
-	bl m4aSongNumStart
-	b _080519D6
-	.align 2, 0
-_080519AC: .4byte gUnknown_02002920
-_080519B0: .4byte gMain
-_080519B4: .4byte gUnknown_08527D66
-_080519B8:
-	movs r0, #2
-	ands r0, r1
-	cmp r0, #0
-	beq _080519D6
-	bl m4aMPlayAllStop
-	movs r0, #0x66
-	bl m4aSongNumStart
-	movs r1, #0
-	strh r4, [r5, #4]
-	adds r0, r5, #0
-	adds r0, #0x30
-	strb r1, [r0]
-	strh r4, [r5]
-_080519D6:
-	ldr r0, _08051A00 @ =gMain
-	ldr r0, [r0, #0x4c]
-	movs r1, #7
-	ands r0, r1
-	cmp r0, #0
-	bne _080519EC
-	ldr r2, _08051A04 @ =gUnknown_02002920
-	ldrh r1, [r2, #4]
-	movs r0, #1
-	subs r0, r0, r1
-	strh r0, [r2, #4]
-_080519EC:
-	ldr r1, _08051A04 @ =gUnknown_02002920
-	ldrh r2, [r1, #0x18]
-	movs r6, #0x18
-	ldrsh r0, [r1, r6]
-_080519F4:
-	cmp r0, #0
-	bgt _080519FA
-	b _08051B98
-_080519FA:
-	subs r0, r2, #1
-	strh r0, [r1, #0x18]
-	b _08051B98
-	.align 2, 0
-_08051A00: .4byte gMain
-_08051A04: .4byte gUnknown_02002920
-_08051A08:
-	ldr r0, _08051A2C @ =gMain
-	ldrh r1, [r0, #0x18]
-	movs r0, #0x40
-	ands r0, r1
-	cmp r0, #0
-	beq _08051A34
-	ldr r4, _08051A30 @ =gUnknown_02002920
-	movs r7, #0xa
-	ldrsh r0, [r4, r7]
-	cmp r0, #7
-	ble _08051A52
-	movs r0, #0x67
-	bl m4aSongNumStart
-	ldrh r0, [r4, #0xa]
-	subs r0, #1
-	b _08051A50
-	.align 2, 0
-_08051A2C: .4byte gMain
-_08051A30: .4byte gUnknown_02002920
-_08051A34:
-	movs r0, #0x80
-	ands r0, r1
-	cmp r0, #0
-	beq _08051A52
-	ldr r4, _08051A78 @ =gUnknown_02002920
-	movs r1, #0xa
-	ldrsh r0, [r4, r1]
-	cmp r0, #0xa
-	bgt _08051A52
-	movs r0, #0x67
-	bl m4aSongNumStart
-	ldrh r0, [r4, #0xa]
-	adds r0, #1
-_08051A50:
-	strh r0, [r4, #0xa]
-_08051A52:
-	ldr r0, _08051A7C @ =gMain
-	ldrh r1, [r0, #0x18]
-	movs r4, #1
-	ands r4, r1
-	cmp r4, #0
-	beq _08051A80
-	movs r0, #0x65
-	bl m4aSongNumStart
-	ldr r0, _08051A78 @ =gUnknown_02002920
-	movs r1, #4
-	strh r1, [r0]
-	movs r2, #0xa
-	ldrsh r1, [r0, r2]
-	adds r0, r0, r1
-	movs r1, #1
-	strb r1, [r0, #0x13]
-	b _08051A96
-	.align 2, 0
-_08051A78: .4byte gUnknown_02002920
-_08051A7C: .4byte gMain
-_08051A80:
-	movs r0, #2
-	ands r0, r1
-	cmp r0, #0
-	beq _08051A96
-	movs r0, #0x66
-	bl m4aSongNumStart
-	ldr r1, _08051AB0 @ =gUnknown_02002920
-	movs r0, #6
-	strh r0, [r1, #0xa]
-	strh r4, [r1]
-_08051A96:
-	ldr r0, _08051AB4 @ =gMain
-	ldr r0, [r0, #0x4c]
-	movs r1, #7
-	ands r0, r1
-	cmp r0, #0
-	bne _08051B98
-	ldr r2, _08051AB0 @ =gUnknown_02002920
-	ldrh r1, [r2, #2]
-	movs r0, #1
-	subs r0, r0, r1
-	strh r0, [r2, #2]
-	b _08051B98
-	.align 2, 0
-_08051AB0: .4byte gUnknown_02002920
-_08051AB4: .4byte gMain
-_08051AB8:
-	ldr r4, _08051BF4 @ =gUnknown_02002920
-	ldrh r0, [r4, #8]
-	adds r0, #1
-	movs r5, #0
-	strh r0, [r4, #8]
-	lsls r0, r0, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x18
-	ble _08051AD4
-	strh r5, [r4, #8]
-	ldrh r1, [r4, #6]
-	movs r0, #1
-	subs r0, r0, r1
-	strh r0, [r4, #6]
-_08051AD4:
-	ldr r0, _08051BF8 @ =gMain
-	ldrh r1, [r0, #0x18]
-	ldr r0, _08051BFC @ =0x000003F7
-	ands r0, r1
-	cmp r0, #0
-	beq _08051B0E
-	movs r0, #0x65
-	bl m4aSongNumStart
-	movs r0, #0xa
-	strh r0, [r4, #0x20]
-	strh r5, [r4, #0x22]
-	movs r0, #0
-	adds r3, r4, #0
-	adds r3, #0x24
-	movs r2, #0xa
-_08051AF4:
-	lsls r1, r0, #0x10
-	asrs r1, r1, #0x10
-	lsls r0, r1, #1
-	adds r0, r0, r3
-	strh r2, [r0]
-	adds r1, #1
-	lsls r1, r1, #0x10
-	lsrs r0, r1, #0x10
-	asrs r1, r1, #0x10
-	cmp r1, #1
-	ble _08051AF4
-	movs r0, #0
-	strh r0, [r4, #0x28]
-_08051B0E:
-	ldr r4, _08051BF4 @ =gUnknown_02002920
-	movs r3, #0x20
-	ldrsh r0, [r4, r3]
-	cmp r0, #0
-	ble _08051B98
-	bl sub_524BC
-	ldrh r0, [r4, #0x20]
-	subs r0, #1
-	strh r0, [r4, #0x20]
-	lsls r0, r0, #0x10
-	asrs r5, r0, #0x10
-	cmp r5, #0
-	bne _08051B98
-	ldr r2, _08051C00 @ =gUnknown_02031AF0
-	movs r6, #0xa
-	ldrsh r0, [r4, r6]
-	subs r0, #7
-	lsls r0, r0, #1
-	adds r2, #0x28
-	adds r0, r0, r2
-	ldrh r1, [r4, #0x24]
-	strb r1, [r0]
-	movs r7, #0xa
-	ldrsh r0, [r4, r7]
-	subs r0, #7
-	lsls r0, r0, #1
-	adds r0, #1
-	adds r0, r0, r2
-	ldrh r1, [r4, #0x26]
-	strb r1, [r0]
-	ldr r2, _08051C04 @ =gMain+0x74
-	movs r0, #0xa
-	ldrsh r1, [r4, r0]
-	subs r1, #7
-	lsls r1, r1, #2
-	adds r0, r2, #0
-	adds r0, #0xd0
-	adds r1, r1, r0
-	ldr r3, _08051C08 @ =gUnknown_086BB910
-	movs r6, #0x24
-	ldrsh r0, [r4, r6]
-	lsls r0, r0, #3
-	adds r0, r0, r3
-	ldrh r0, [r0]
-	strh r0, [r1]
-	movs r7, #0xa
-	ldrsh r1, [r4, r7]
-	subs r1, #7
-	lsls r1, r1, #2
-	adds r2, #0xd2
-	adds r1, r1, r2
-	movs r2, #0x26
-	ldrsh r0, [r4, r2]
-	lsls r0, r0, #3
-	adds r0, r0, r3
-	ldrh r0, [r0]
-	strh r0, [r1]
-	movs r0, #3
-	strh r0, [r4]
-	movs r3, #0xa
-	ldrsh r0, [r4, r3]
-	adds r0, r4, r0
-	adds r0, #0x13
-	movs r1, #0
-	strb r1, [r0]
-	strh r5, [r4, #8]
-	movs r0, #1
-	strh r0, [r4, #6]
-_08051B98:
-	ldr r2, _08051BF4 @ =gUnknown_02002920
-	movs r6, #0x2e
-	adds r6, r6, r2
-	mov ip, r6
-	movs r0, #0
-	ldrsb r0, [r6, r0]
-	cmp r0, #1
-	bne _08051C10
-	adds r4, r2, #0
-	adds r4, #0x2b
-	ldrb r0, [r4]
-	adds r0, #1
-	movs r5, #0
-	strb r0, [r4]
-	lsls r0, r0, #0x18
-	ldr r6, _08051C0C @ =gUnknown_086BB9B4
-	adds r3, r2, #0
-	adds r3, #0x2c
-	movs r1, #0
-	ldrsb r1, [r3, r1]
-	lsls r1, r1, #2
-	adds r1, r1, r6
-	asrs r0, r0, #0x18
-	movs r7, #2
-	ldrsh r1, [r1, r7]
-	cmp r0, r1
-	ble _08051C30
-	strb r5, [r4]
-	ldrb r0, [r3]
-	adds r0, #1
-	strb r0, [r3]
-	lsls r0, r0, #0x18
-	asrs r0, r0, #0x18
-	adds r2, #0x2d
-	cmp r0, #0xc
-	ble _08051BE8
-	strb r5, [r3]
-	strb r5, [r2]
-	mov r0, ip
-	strb r5, [r0]
-_08051BE8:
-	movs r0, #0
-	ldrsb r0, [r3, r0]
-	lsls r0, r0, #2
-	adds r0, r0, r6
-	ldrb r0, [r0]
-	b _08051C2E
-	.align 2, 0
-_08051BF4: .4byte gUnknown_02002920
-_08051BF8: .4byte gMain
-_08051BFC: .4byte 0x000003F7
-_08051C00: .4byte gUnknown_02031AF0
-_08051C04: .4byte gMain+0x74
-_08051C08: .4byte gUnknown_086BB910
-_08051C0C: .4byte gUnknown_086BB9B4
-_08051C10:
-	adds r1, r2, #0
-	adds r1, #0x2b
-	ldrb r0, [r1]
-	adds r0, #1
-	strb r0, [r1]
-	lsls r0, r0, #0x18
-	asrs r0, r0, #0x18
-	cmp r0, #0x12
-	ble _08051C30
-	movs r0, #0
-	strb r0, [r1]
-	adds r2, #0x2d
-	ldrb r1, [r2]
-	movs r0, #1
-	subs r0, r0, r1
-_08051C2E:
-	strb r0, [r2]
-_08051C30:
-	bl sub_11FC
-	pop {r4, r5, r6, r7}
-	pop {r0}
-	bx r0
-
-	thumb_func_start sub_51C3C
-sub_51C3C: @ 0x08051C3C
-	push {lr}
-	bl sub_111C
-	bl sub_1170
-	cmp r0, #0
-	beq _08051C56
-	bl sub_1198
-	ldr r1, _08051C5C @ =gMain
-	ldrb r0, [r1, #3]
-	adds r0, #1
-	strb r0, [r1, #3]
-_08051C56:
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08051C5C: .4byte gMain
-
 	thumb_func_start sub_51C60
 sub_51C60: @ 0x08051C60
 	push {lr}
diff --git a/include/functions.h b/include/functions.h
index 0606057..7d843c5 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -330,14 +330,14 @@ extern void sub_1050C(void);
 
 //extern ? OptionsMain();
 //extern ? sub_51240();
-//extern ? sub_513B8();
+extern void sub_513B8(void);
 //extern ? sub_514B8();
 //extern ? sub_51C3C();
 //extern ? sub_51C60();
-//extern ? sub_51C9C();
-//extern ? sub_524BC();
-//extern ? sub_52528();
-//extern ? sub_525CC();
+extern void sub_51C9C(void);
+extern void sub_524BC(void);
+extern void sub_52528(void);
+extern void sub_525CC(s8);
 
 // asm/pokedex.s
 
@@ -388,7 +388,7 @@ extern void sub_8ABC(void);
 
 // asm/rom_1068C.s
 
-//extern ? sub_1068C();
+void sub_1068C(int, int, int, int, u16);
 extern void sub_10708(void *volatile, void *volatile, s16, s16);
 //extern ? sub_10750();
 //extern ? sub_10798();
@@ -830,4 +830,4 @@ extern void sub_1175C(void);
 extern void sub_11968(void);
 extern void sub_11B74(void);
 
-#endif  // GUARD_FUNCTIONS_H
\ No newline at end of file
+#endif  // GUARD_FUNCTIONS_H
diff --git a/include/main.h b/include/main.h
index 3e0c744..6415742 100755
--- a/include/main.h
+++ b/include/main.h
@@ -11,8 +11,9 @@ struct SaveData
     /*0x141*/ u8 unk141;
     /*0x142*/ u8 unk142;
     /*0x143*/ u8 unk143;
-    /*0x144*/ u8 filler144[0x2D8-0x144];
-              s8 signature[10];
+    /*0x144*/ //u8 filler144[0x2D8-0x144];
+              u16 unk144[0x65][2];
+    /*0x2D8*/ s8 signature[10];
               u16 unk2E2;
               u32 unk2E4;
 };
@@ -67,7 +68,7 @@ struct Main
 
 
 extern struct Main gMain;
-extern u8 gUnknown_0200B134[];
+extern struct SaveData gUnknown_0200B134;
 extern struct SpriteGroup gUnknown_0200B3B8[];
 extern u32 IntrMain_Buffer[0x200];
 extern u32 IntrMain[];
diff --git a/include/variables.h b/include/variables.h
index 590ae00..a2112e1 100644
--- a/include/variables.h
+++ b/include/variables.h
@@ -3,6 +3,7 @@
 
 // Place all external variable declarations in this file
 
+extern void (*const gUnknown_08527F08[])(void);
 extern u16 gUnknown_0201A520[];
 extern u16 gUnknown_0201AD20[];
 extern u32 gUnknown_0201A500[];
@@ -172,4 +173,4 @@ extern struct Coord16 gUnknown_086A9694[];
 extern struct Coord16 gUnknown_086A96AC[];
 extern struct Coord16 gUnknown_086A96C0[];
 
-#endif  // GUARD_VARIABLES_H
\ No newline at end of file
+#endif  // GUARD_VARIABLES_H
diff --git a/ld_script.txt b/ld_script.txt
index 56aef78..f07c1bd 100755
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -45,6 +45,7 @@ SECTIONS
         asm/rom_11B9C.o(.text);
         src/rom_3219C.o(.text);
         asm/rom_3219C.o(.text);
+        src/options.o(.text);
         asm/options.o(.text);
         src/rom_528AC.o(.text);
         asm/m4a_1.o(.text);
diff --git a/src/gbplayer.c b/src/gbplayer.c
index c0d9655..e2c1cea 100755
--- a/src/gbplayer.c
+++ b/src/gbplayer.c
@@ -291,8 +291,7 @@ void sub_1198(void)
 
 void sub_11B0(int arg0)
 {
-    if (gUnknown_0200B134[0xCD])
-    //if (gMain.saveData.unk141)
+    if (gUnknown_0200B134.unk141)
     {
         gUnknown_02019BF8 = arg0;
         gUnknown_02019BFC = 0;
diff --git a/src/options.c b/src/options.c
new file mode 100644
index 0000000..ef31b58
--- /dev/null
+++ b/src/options.c
@@ -0,0 +1,501 @@
+#include "global.h"
+#include "m4a.h"
+#include "main.h"
+
+struct OptionsData
+{
+    s16 unk0;
+    u16 unk2;
+    u16 unk4;
+    u16 unk6;
+    s16 unk8;
+    s16 unkA;
+    u16 unkC;
+    s16 unkE;
+    s16 unk10;
+    u8 unk12;
+    u8 unk13;
+    u8 unk14;
+    u8 unk15;
+    u8 unk16;
+    u8 unk17;
+    s16 unk18;
+    u8 unk1A[6];
+    s16 unk20;
+    u16 unk22;
+    s16 unk24[2];
+    u16 unk28;
+    u8 unk2A;
+    s8 unk2B;
+    s8 unk2C;
+    u8 unk2D;
+    s8 unk2E;
+    u8 unk2F;
+    u8 unk30;
+};
+
+extern struct OptionsData gUnknown_02002920;
+
+void OptionsMain(void)
+{
+    gUnknown_08527F08[gMain.subState]();
+}
+
+extern const u16 gUnknown_0852B468[];
+extern const u8 gUnknown_08528828[];
+extern const u8 gUnknown_0852A848[];
+extern const u8 gUnknown_08528028[];
+extern const u8 gUnknown_0852A048[];
+
+void sub_51240(void)
+{
+    sub_438();
+
+    REG_DISPCNT = 0x1080;
+    REG_BG0CNT = 4;
+    REG_DISPCNT |= 0x100;
+    REG_BG1CNT = 0x109;
+    REG_DISPCNT |= 0x200;
+
+    gMain.unk16 = REG_DISPCNT;
+
+    DmaCopy16(3, gUnknown_0852B468, (void *)PLTT, 0x200);
+    DmaCopy16(3, gUnknown_08528828, (void *)(VRAM + 0x4000), 0x1800);
+    DmaCopy16(3, gUnknown_0852A848, (void *)(VRAM + 0x8000), 0xC00);
+    DmaCopy16(3, gUnknown_08528028, gUnknown_03005C00, 0x800);
+    DmaCopy16(3, gUnknown_03005C00, (void *)VRAM, 0x800);
+
+    if (gGameBoyPlayerEnabled != 1)
+    {
+         sub_1068C(0x12, 4, 2, 1, 2);
+         sub_1068C(0x12, 5, 3, 2, 2);
+    }
+
+    DmaCopy16(3, gUnknown_03005C00, (void *)VRAM, 0x800);
+    DmaCopy16(3, gUnknown_0852A048, (void *)(VRAM + 0x800), 0x800);
+    DmaCopy16(3, gGBAButtonIcons_Pals, (void *)(PLTT + 0x200), 0x60);
+    DmaCopy16(3, gOptionsSprites_Gfx, (void *)(VRAM + 0x10000), 0x2020);
+	sub_513B8();
+	sub_51C9C();
+	m4aMPlayAllStop();
+	sub_CBC();
+	sub_24C();
+	sub_10C0();
+
+    gMain.subState++;
+}
+
+extern u8 gUnknown_02031AF0[][10];
+extern u8 gUnknown_08527ED6[][10];
+
+void sub_513B8(void)
+{
+    int i;
+    int j;
+
+    gUnknown_02002920.unk0 = 0;
+    gUnknown_02002920.unk2 = 0;
+    gUnknown_02002920.unk4 = 0;
+    gUnknown_02002920.unk6 = 1;
+    gUnknown_02002920.unk8 = 0;
+    gUnknown_02002920.unkA = 0;
+    gUnknown_02002920.unkC = gUnknown_0200B134.unk143;
+    gUnknown_02002920.unkE = 0;
+    gUnknown_02002920.unk10 = 0;
+    gUnknown_02002920.unk12 = 0;
+    gUnknown_02002920.unk13 = 0;
+    gUnknown_02002920.unk14 = 1;
+    gUnknown_02002920.unk15 = 0;
+    gUnknown_02002920.unk16 = 0;
+    gUnknown_02002920.unk17 = 1;
+    gUnknown_02002920.unk18 = 0;
+    for (i = 0; i < 6; i++)
+        gUnknown_02002920.unk1A[i] = 0;
+    gUnknown_02002920.unk20 = 0;
+    gUnknown_02002920.unk22 = 0;
+    for (i = 0; i < 2; i++)
+        gUnknown_02002920.unk24[i] = 10;
+    gUnknown_02002920.unk28 = 0;
+    for (i = 0; i < 4; i++)
+    {
+        for (j = 0; j < 10; j++)
+            gUnknown_02031AF0[i][j] = gUnknown_08527ED6[i][j];
+    }
+    sub_52528();
+    if (gGameBoyPlayerEnabled == 1)
+    {
+        gUnknown_02002920.unk2A = gUnknown_0200B134.unk141;
+        gUnknown_0200B134.unk141 = 1;
+    }
+    else
+    {
+        gUnknown_02002920.unk2A = 0;
+        gUnknown_0200B134.unk141 = 0;
+    }
+    gUnknown_02002920.unk2E = 0;
+    gUnknown_02002920.unk2B = 0;
+    gUnknown_02002920.unk2C = 0;
+    gUnknown_02002920.unk2D = 0;
+    gUnknown_02002920.unk2F = 0;
+    gUnknown_02002920.unk30 = 0;
+}
+
+extern u16 gUnknown_08527D22[];
+extern u16 gUnknown_086BB910[][4];
+extern struct {u8 unk0; s16 unk2;} gUnknown_086BB9B4[];
+extern u16 gUnknown_08527D66[];
+
+void sub_514B8(void)
+{
+    s16 r4;
+
+    sub_51C9C();
+    switch (gUnknown_02002920.unk0)
+    {
+    case 0:
+        if (gMain.newKeys & 0x40)
+        {
+            if (gUnknown_02002920.unkA != 0xD)
+            {
+                if (gUnknown_02002920.unkA == 0xE)
+                {
+                    m4aSongNumStart(0x67);
+                    gUnknown_02002920.unkA = 0xD;
+                }
+                else if (gUnknown_02002920.unkA > 0)
+                {
+                    m4aSongNumStart(0x67);
+                    gUnknown_02002920.unkA--;
+                }
+            }
+        }
+        //_0805152C
+        else if (gMain.newKeys & 0x80)
+        {
+            if (gUnknown_02002920.unkA < 6)
+            {
+                m4aSongNumStart(0x67);
+                gUnknown_02002920.unkA++;
+            }
+            else if (gUnknown_02002920.unkA == 0xD)
+            {
+                m4aSongNumStart(0x67);
+                gUnknown_02002920.unkA = 0xE;
+            }
+            //_0805155E
+            else if (gUnknown_02002920.unkA == 0xE)
+            {
+                m4aSongNumStart(0x67);
+                gUnknown_02002920.unkA = 2;
+            }
+            // _0805156A 
+        }
+        //_0805156C
+        if ((gMain.newKeys & 0x10) && gGameBoyPlayerEnabled == 1 && (u16)gUnknown_02002920.unkA < 2)
+        {
+            m4aSongNumStart(0x67);
+            gUnknown_02002920.unkA += 0xD;
+        }
+        if ((gMain.newKeys & 0x20) && gGameBoyPlayerEnabled == 1 && (u16)(gUnknown_02002920.unkA - 13) < 2)
+        {
+            m4aSongNumStart(0x67);
+            gUnknown_02002920.unkA -= 0xD;
+        }
+        //_080515C2
+        if (gMain.newKeys & 1)
+        {
+            switch (gUnknown_02002920.unkA)
+            {
+            case 0:
+                m4aSongNumStart(0x65);
+                gUnknown_02002920.unk0 = 1;
+                gUnknown_02002920.unk18 = 0;
+                gUnknown_02002920.unk30 = 1;
+                if (gUnknown_02002920.unk2E == 1)
+                {
+                    gUnknown_02002920.unk2B = 0;
+                    gUnknown_02002920.unk2D = 0;
+                    gUnknown_02002920.unk2C = 0;
+                    gUnknown_02002920.unk2E = 0;
+                }
+                break;
+            case 1:
+                m4aSongNumStart(0x65);
+                gUnknown_02002920.unk0 = 2;
+                gUnknown_02002920.unk18 = 0;
+                gUnknown_02002920.unk30 = 1;
+                if (gUnknown_02002920.unk2E == 1)
+                {
+                    gUnknown_02002920.unk2B = 0;
+                    gUnknown_02002920.unk2D = 0;
+                    gUnknown_02002920.unk2C = 0;
+                    gUnknown_02002920.unk2E = 0;
+                }
+                break;
+            case 2:
+            case 3:
+            case 4:
+            case 5:
+                m4aSongNumStart(0x65);
+                gUnknown_02002920.unkC = gUnknown_02002920.unkA - 2;
+                gUnknown_0200B134.unk143 = gUnknown_02002920.unkC; 
+                break;
+            case 6:
+                m4aSongNumStart(0x65);
+                gUnknown_02002920.unkC = gUnknown_02002920.unkA - 2;
+                gUnknown_0200B134.unk143 = gUnknown_02002920.unkC; 
+                gUnknown_02002920.unkA = 7;
+                gUnknown_02002920.unk0 = 3;
+                break;
+            case 14:
+                if (gGameBoyPlayerEnabled == 1)
+                {
+                    m4aSongNumStart(0x65);
+                    gUnknown_02002920.unk2D = 0;
+                    if (gUnknown_02002920.unk2E == 1)
+                        gUnknown_02002920.unk2E = 0;
+                    gUnknown_02002920.unk2B = 0; 
+                    gUnknown_02002920.unk2C = 0; 
+                    gUnknown_02002920.unk2A = 0; 
+                }
+                break;
+            case 13:
+                if (gGameBoyPlayerEnabled == 1)
+                {
+                    m4aSongNumStart(0x65);
+                    sub_11B0(11);
+                    if (gUnknown_02002920.unk2E == 0)
+                        gUnknown_02002920.unk2E = 1;
+
+                    gUnknown_02002920.unk2B = 0; 
+                    gUnknown_02002920.unk2C = 0; 
+                    gUnknown_02002920.unk2A = 1; 
+                }
+                break;
+            }
+        }
+        //_0805177C
+        else if (gMain.newKeys & 2)
+        {
+            m4aSongNumStart(0x66);
+            gMain.subState++;
+            sub_525CC(gMain.saveData.unk143);
+
+        }
+        if (!(gMain.unk4C & 7))
+            gUnknown_02002920.unk2 = 1 - gUnknown_02002920.unk2;
+        break;
+    case 1:  // _080517A8
+        if (gMain.heldKeys & 0x20)
+        {
+            if (gUnknown_02002920.unk18 == 0)
+            {
+                gUnknown_02002920.unkE--;
+                gUnknown_02002920.unk18 = 10;
+            }
+        }
+        else if (gMain.heldKeys & 0x10)
+        {
+            if (gUnknown_02002920.unk18 == 0)
+            {
+                gUnknown_02002920.unkE++;
+                gUnknown_02002920.unk18 = 10;
+            }
+        }
+        if (gMain.newKeys & 0x40)
+            gUnknown_02002920.unkE += 10;
+        else if (gMain.newKeys & 0x80)
+            gUnknown_02002920.unkE -= 10;
+        if (gUnknown_02002920.unkE < 0)
+            gUnknown_02002920.unkE = 33;
+        if (gUnknown_02002920.unkE > 33)
+            gUnknown_02002920.unkE = 0;
+
+        r4 = gUnknown_02002920.unkE + 1;
+        gUnknown_02002920.unk12 = r4 / 100;
+        r4 %= 100;
+        gUnknown_02002920.unk13 = r4 / 10;
+        gUnknown_02002920.unk14 = r4 % 10;
+        if (gMain.newKeys & 1)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(gUnknown_08527D22[gUnknown_02002920.unkE]);
+        }
+        else if (gMain.newKeys & 2)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(0x66);
+            gUnknown_02002920.unk4 = 0;
+            gUnknown_02002920.unk30 = 0;
+            gUnknown_02002920.unk0 = 0;
+        }
+        //_080518AA
+        if (!(gMain.unk4C & 7))
+            gUnknown_02002920.unk4 = 1 - gUnknown_02002920.unk4;
+        if (gUnknown_02002920.unk18 > 0)
+            gUnknown_02002920.unk18--;
+        break;
+    case 2:
+        if (gMain.heldKeys & 0x20)
+        {
+            if (gUnknown_02002920.unk18 == 0)
+            {
+                gUnknown_02002920.unk10--;
+                gUnknown_02002920.unk18 = 10;
+            }
+        }
+        else if (gMain.heldKeys & 0x10)
+        {
+            if (gUnknown_02002920.unk18 == 0)
+            {
+                gUnknown_02002920.unk10++;
+                gUnknown_02002920.unk18 = 10;
+            }
+        }
+        //_08051918
+        if (gMain.newKeys & 0x40)
+            gUnknown_02002920.unk10 += 10;
+        else if (gMain.newKeys & 0x80)
+            gUnknown_02002920.unk10 -= 10;
+        if (gUnknown_02002920.unk10 < 0)
+            gUnknown_02002920.unk10 = 0xB7;
+        if (gUnknown_02002920.unk10 > 0xB7)
+            gUnknown_02002920.unk10 = 0;
+
+        r4 = gUnknown_02002920.unk10 + 1;
+        gUnknown_02002920.unk15 = r4 / 100;
+        r4 %= 100;
+        gUnknown_02002920.unk16 = r4 / 10;
+        gUnknown_02002920.unk17 = r4 % 10;
+        if (gMain.newKeys & 0x1)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(gUnknown_08527D66[gUnknown_02002920.unk10]);
+        }
+        else if (gMain.newKeys & 0x2)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(0x66);
+            gUnknown_02002920.unk4 = 0;
+            gUnknown_02002920.unk30 = 0;
+            gUnknown_02002920.unk0 = 0;
+        }
+        if (!(gMain.unk4C & 7))
+            gUnknown_02002920.unk4 = 1 - gUnknown_02002920.unk4;
+        if (gUnknown_02002920.unk18 > 0)
+            gUnknown_02002920.unk18--;
+        break;
+    case 3:  //_08051A08
+        if (gMain.newKeys & 0x40)
+        {
+            if (gUnknown_02002920.unkA > 7)
+            {
+                m4aSongNumStart(0x67);
+                gUnknown_02002920.unkA--;
+            }
+        }
+        //_08051A34
+        else if (gMain.newKeys & 0x80)
+        {
+            if (gUnknown_02002920.unkA <= 10)
+            {
+                m4aSongNumStart(0x67);
+                gUnknown_02002920.unkA++;
+            }
+        }
+        //_08051A52
+        if (gMain.newKeys & 1)
+        {
+            m4aSongNumStart(0x65);
+            gUnknown_02002920.unk0 = 4;
+            gUnknown_02002920.unk1A[gUnknown_02002920.unkA - 7] = 1;
+        }
+        //_08051A80
+        else if (gMain.newKeys & 2)
+        {
+            m4aSongNumStart(0x66);
+            gUnknown_02002920.unkA = 6;
+            gUnknown_02002920.unk0 = 0;
+        }
+        //_08051A96 
+        if (!(gMain.unk4C & 7))
+            gUnknown_02002920.unk2 = 1 - gUnknown_02002920.unk2;
+        break;
+    case 4:
+        gUnknown_02002920.unk8++;
+        if (gUnknown_02002920.unk8 > 24)
+        {
+            gUnknown_02002920.unk8 = 0;
+            gUnknown_02002920.unk6 = 1 - gUnknown_02002920.unk6;
+        }
+        if (gMain.newKeys & 0x3F7)
+        {
+            s16 i;
+
+            m4aSongNumStart(0x65);
+            gUnknown_02002920.unk20 = 10;
+            gUnknown_02002920.unk22 = 0;
+            for (i = 0; i < 2; i++)
+                gUnknown_02002920.unk24[i] = 10;
+            gUnknown_02002920.unk28 = 0;
+        }
+        //_08051B0E
+        if (gUnknown_02002920.unk20 > 0)
+        {
+            sub_524BC();
+            gUnknown_02002920.unk20--;
+            if (gUnknown_02002920.unk20 == 0)
+            {
+                gUnknown_02031AF0[4][(gUnknown_02002920.unkA - 7) * 2 + 0] = gUnknown_02002920.unk24[0];
+                gUnknown_02031AF0[4][(gUnknown_02002920.unkA - 7) * 2 + 1] = gUnknown_02002920.unk24[1];
+                gUnknown_0200B134.unk144[(gUnknown_02002920.unkA - 7)][0] = gUnknown_086BB910[gUnknown_02002920.unk24[0]][0];
+                gUnknown_0200B134.unk144[(gUnknown_02002920.unkA - 7)][1] = gUnknown_086BB910[gUnknown_02002920.unk24[1]][0];
+                gUnknown_02002920.unk0 = 3;
+                gUnknown_02002920.unk1A[gUnknown_02002920.unkA - 7] = 0;
+                gUnknown_02002920.unk8 = 0;
+                gUnknown_02002920.unk6 = 1;
+            }
+        }
+        break;
+    }
+    //_08051B98
+    if (gUnknown_02002920.unk2E == 1)
+    {
+        //gUnknown_02002920.unk2B++;
+        if (++gUnknown_02002920.unk2B > gUnknown_086BB9B4[gUnknown_02002920.unk2C].unk2)
+        {
+            gUnknown_02002920.unk2B = 0;
+            gUnknown_02002920.unk2C++;
+            if (gUnknown_02002920.unk2C > 12)
+            {
+                gUnknown_02002920.unk2C = 0;
+                gUnknown_02002920.unk2D = 0;
+                gUnknown_02002920.unk2E = 0;
+            }
+            //_08051BE8
+            gUnknown_02002920.unk2D = gUnknown_086BB9B4[gUnknown_02002920.unk2C].unk0;
+        }
+        // _08051C30
+    }
+    else
+    //_08051C10
+    {
+        gUnknown_02002920.unk2B++;
+        if (gUnknown_02002920.unk2B > 18)
+        {
+            gUnknown_02002920.unk2B = 0;
+            gUnknown_02002920.unk2D = 1 - gUnknown_02002920.unk2D;
+        }
+    }
+    sub_11FC();
+}
+
+void sub_51C3C(void)
+{
+    sub_111C();
+    if (sub_1170() != 0)
+    {
+        sub_1198();
+        gMain.subState++;
+    }
+}