decompile sub_80A3740 - swap32

7 files changed, 401 insertions, 608 deletions

diff --git a/asm/item_menu.s b/asm/item_menu.s
index ae746307c..c94a88473 100644
--- a/asm/item_menu.s
+++ b/asm/item_menu.s
@@ -6,587 +6,6 @@
 
 	.text
 
-	thumb_func_start sub_80A3740
-sub_80A3740: @ 80A3740
-	push {lr}
-	sub sp, 0x4
-	ldr r1, _080A376C @ =gUnknown_083C1704
-	mov r0, sp
-	movs r2, 0x4
-	bl memcpy
-	mov r0, sp
-	adds r0, 0x2
-	movs r1, 0xD1
-	movs r2, 0x2
-	bl LoadPalette
-	mov r0, sp
-	movs r1, 0xD8
-	movs r2, 0x2
-	bl LoadPalette
-	add sp, 0x4
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A376C: .4byte gUnknown_083C1704
-	thumb_func_end sub_80A3740
-
-	thumb_func_start sub_80A3770
-sub_80A3770: @ 80A3770
-	push {lr}
-	ldr r0, _080A379C @ =gUnknown_03000701
-	ldrb r0, [r0]
-	cmp r0, 0
-	bne _080A37B6
-	ldr r3, _080A37A0 @ =gUnknown_03000704
-	ldr r2, _080A37A4 @ =gUnknown_02038559
-	movs r1, 0
-	ldrsb r1, [r2, r1]
-	lsls r0, r1, 1
-	adds r0, r1
-	lsls r0, 1
-	ldr r1, _080A37A8 @ =gUnknown_083C1690
-	adds r0, r1
-	str r0, [r3]
-	movs r0, 0
-	ldrsb r0, [r2, r0]
-	cmp r0, 0x3
-	beq _080A37B0
-	ldr r1, _080A37AC @ =gUnknown_02038564
-	movs r0, 0x4
-	b _080A37B4
-	.align 2, 0
-_080A379C: .4byte gUnknown_03000701
-_080A37A0: .4byte gUnknown_03000704
-_080A37A4: .4byte gUnknown_02038559
-_080A37A8: .4byte gUnknown_083C1690
-_080A37AC: .4byte gUnknown_02038564
-_080A37B0:
-	ldr r1, _080A37BC @ =gUnknown_02038564
-	movs r0, 0x6
-_080A37B4:
-	strb r0, [r1]
-_080A37B6:
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A37BC: .4byte gUnknown_02038564
-	thumb_func_end sub_80A3770
-
-	thumb_func_start sub_80A37C0
-sub_80A37C0: @ 80A37C0
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _080A37F0 @ =gTasks
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	adds r1, r2
-	ldr r0, _080A37F4 @ =sub_80A50C8
-	str r0, [r1]
-	movs r0, 0
-	bl StartVerticalScrollIndicators
-	movs r0, 0x1
-	bl StartVerticalScrollIndicators
-	movs r0, 0x2
-	bl StartVerticalScrollIndicators
-	movs r0, 0x3
-	bl StartVerticalScrollIndicators
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A37F0: .4byte gTasks
-_080A37F4: .4byte sub_80A50C8
-	thumb_func_end sub_80A37C0
-
-	thumb_func_start sub_80A37F8
-sub_80A37F8: @ 80A37F8
-	push {r4-r7,lr}
-	lsls r0, 24
-	lsrs r7, r0, 24
-	ldr r6, _080A3854 @ =gUnknown_0203855A
-	ldrb r5, [r6]
-	cmp r5, 0xF
-	bhi _080A3868
-	adds r0, r5, 0x1
-	strb r0, [r6]
-	ldr r4, _080A3858 @ =gBGTilemapBuffers + 0x1000
-	ldrb r2, [r6]
-	adds r0, r4, 0
-	adds r1, r5, 0
-	movs r3, 0x4F
-	bl sub_80A396C
-	ldr r0, _080A385C @ =gUnknown_02038559
-	ldrb r1, [r0]
-	adds r1, 0x1
-	lsls r1, 24
-	lsrs r1, 24
-	ldrb r2, [r6]
-	lsrs r2, 1
-	ldr r3, _080A3860 @ =gTasks
-	lsls r0, r7, 2
-	adds r0, r7
-	lsls r0, 3
-	adds r0, r3
-	movs r3, 0x12
-	ldrsb r3, [r0, r3]
-	adds r0, r4, 0
-	bl sub_80A39E4
-	ldr r4, _080A3864 @ =gUnknown_02038558
-	movs r0, 0x1
-	strb r0, [r4]
-	lsrs r1, r5, 1
-	ldrb r2, [r6]
-	lsrs r2, 1
-	subs r2, 0x1
-	adds r0, r7, 0
-	bl sub_80A48E8
-	movs r0, 0
-	strb r0, [r4]
-	b _080A3932
-	.align 2, 0
-_080A3854: .4byte gUnknown_0203855A
-_080A3858: .4byte gBGTilemapBuffers + 0x1000
-_080A385C: .4byte gUnknown_02038559
-_080A3860: .4byte gTasks
-_080A3864: .4byte gUnknown_02038558
-_080A3868:
-	ldr r0, _080A38A0 @ =gLinkOpen
-	ldrb r0, [r0]
-	cmp r0, 0x1
-	bne _080A38B4
-	ldr r1, _080A38A4 @ =gUnknown_03005D10
-	ldr r0, _080A38A8 @ =gUnknown_02038559
-	ldrb r0, [r0]
-	lsls r0, 24
-	asrs r0, 24
-	lsls r0, 2
-	adds r0, r1
-	ldrb r1, [r0, 0x1]
-	ldrb r0, [r0]
-	adds r1, r0
-	ldr r0, _080A38AC @ =gUnknown_03005D24
-	ldr r0, [r0]
-	lsls r1, 2
-	adds r1, r0
-	movs r2, 0
-	ldrsh r0, [r1, r2]
-	ldr r4, _080A38B0 @ =gUnknown_02038562
-	ldrb r1, [r4]
-	bl ItemListMenu_ChangeDescription
-	ldrb r0, [r4]
-	adds r0, 0x1
-	strb r0, [r4]
-	b _080A38F2
-	.align 2, 0
-_080A38A0: .4byte gLinkOpen
-_080A38A4: .4byte gUnknown_03005D10
-_080A38A8: .4byte gUnknown_02038559
-_080A38AC: .4byte gUnknown_03005D24
-_080A38B0: .4byte gUnknown_02038562
-_080A38B4:
-	ldr r1, _080A3938 @ =gUnknown_02038562
-	ldrb r0, [r1]
-	cmp r0, 0x2
-	bhi _080A38F2
-	ldr r5, _080A393C @ =gUnknown_03005D10
-	adds r4, r1, 0
-_080A38C0:
-	ldr r0, _080A3940 @ =gUnknown_02038559
-	ldrb r0, [r0]
-	lsls r0, 24
-	asrs r0, 24
-	lsls r0, 2
-	adds r0, r5
-	ldrb r1, [r0, 0x1]
-	ldrb r0, [r0]
-	adds r1, r0
-	ldr r0, _080A3944 @ =gUnknown_03005D24
-	ldr r0, [r0]
-	lsls r1, 2
-	adds r1, r0
-	movs r2, 0
-	ldrsh r0, [r1, r2]
-	ldrb r1, [r4]
-	bl ItemListMenu_ChangeDescription
-	ldrb r0, [r4]
-	adds r0, 0x1
-	strb r0, [r4]
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x2
-	bls _080A38C0
-_080A38F2:
-	ldr r0, _080A3938 @ =gUnknown_02038562
-	ldrb r0, [r0]
-	cmp r0, 0x3
-	bne _080A3932
-	ldr r1, _080A3948 @ =gUnknown_0203855A
-	movs r0, 0x10
-	strb r0, [r1]
-	ldr r1, _080A394C @ =gUnknown_0203855B
-	ldr r0, _080A3940 @ =gUnknown_02038559
-	ldrb r0, [r0]
-	adds r0, 0x1
-	strb r0, [r1]
-	ldr r0, _080A3950 @ =sub_80A4F68
-	bl FindTaskIdByFunc
-	lsls r0, 24
-	lsrs r0, 24
-	bl sub_80A37C0
-	adds r0, r7, 0
-	bl DestroyTask
-	bl ItemListMenu_InitMenu
-	movs r0, 0x2
-	movs r1, 0
-	bl sub_80F979C
-	movs r0, 0x3
-	movs r1, 0
-	bl sub_80F979C
-_080A3932:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A3938: .4byte gUnknown_02038562
-_080A393C: .4byte gUnknown_03005D10
-_080A3940: .4byte gUnknown_02038559
-_080A3944: .4byte gUnknown_03005D24
-_080A3948: .4byte gUnknown_0203855A
-_080A394C: .4byte gUnknown_0203855B
-_080A3950: .4byte sub_80A4F68
-	thumb_func_end sub_80A37F8
-
-	thumb_func_start sub_80A3954
-sub_80A3954: @ 80A3954
-	push {lr}
-	adds r1, r0, 0
-	ldr r0, _080A3968 @ =gUnknown_08E77004
-	movs r2, 0x80
-	lsls r2, 3
-	bl CpuSet
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A3968: .4byte gUnknown_08E77004
-	thumb_func_end sub_80A3954
-
-	thumb_func_start sub_80A396C
-sub_80A396C: @ 80A396C
-	push {r4-r7,lr}
-	lsls r1, 24
-	lsrs r5, r1, 24
-	adds r4, r5, 0
-	lsls r2, 24
-	lsrs r7, r2, 24
-	lsls r3, 24
-	lsrs r6, r3, 24
-	adds r1, r4, 0x2
-	lsls r1, 6
-	adds r1, 0x1C
-	adds r2, r0, r1
-	adds r0, r4, 0x1
-	lsls r0, 24
-	lsrs r5, r0, 24
-	cmp r7, r4
-	bls _080A39B2
-_080A398E:
-	movs r1, 0
-	adds r3, r5, 0x1
-	adds r4, r2, 0
-	adds r4, 0x40
-_080A3996:
-	lsls r0, r1, 1
-	adds r0, r2
-	strh r6, [r0]
-	adds r0, r1, 0x1
-	lsls r0, 16
-	lsrs r1, r0, 16
-	cmp r1, 0xE
-	bls _080A3996
-	adds r2, r4, 0
-	adds r1, r5, 0
-	lsls r0, r3, 24
-	lsrs r5, r0, 24
-	cmp r7, r1
-	bhi _080A398E
-_080A39B2:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80A396C
-
-	thumb_func_start sub_80A39B8
-sub_80A39B8: @ 80A39B8
-	push {lr}
-	sub sp, 0x10
-	lsls r1, 25
-	lsrs r1, 24
-	ldr r3, _080A39E0 @ =gUnknown_08E96EC8
-	movs r2, 0
-	str r2, [sp]
-	str r1, [sp, 0x4]
-	movs r1, 0x8
-	str r1, [sp, 0x8]
-	movs r1, 0x2
-	str r1, [sp, 0xC]
-	movs r1, 0x4
-	movs r2, 0xA
-	bl sub_809D104
-	add sp, 0x10
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A39E0: .4byte gUnknown_08E96EC8
-	thumb_func_end sub_80A39B8
-
-	thumb_func_start sub_80A39E4
-sub_80A39E4: @ 80A39E4
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x10
-	mov r8, r0
-	lsls r1, 24
-	lsrs r1, 24
-	adds r4, r1, 0
-	lsls r2, 24
-	lsrs r6, r2, 24
-	adds r5, r6, 0
-	lsls r2, r1, 1
-	mov r9, r2
-	lsls r3, 24
-	asrs r3, 24
-	movs r0, 0x1
-	negs r0, r0
-	cmp r3, r0
-	bne _080A3A5C
-	adds r0, r1, 0x1
-	lsls r7, r0, 1
-	cmp r1, 0x5
-	bne _080A3A18
-	movs r7, 0x2
-_080A3A18:
-	ldr r0, _080A3A58 @ =gUnknown_08E96EC8
-	mov r10, r0
-	movs r4, 0x8
-	subs r4, r6
-	lsls r4, 16
-	lsrs r4, 16
-	str r4, [sp]
-	str r2, [sp, 0x4]
-	str r6, [sp, 0x8]
-	movs r0, 0x2
-	mov r9, r0
-	str r0, [sp, 0xC]
-	mov r0, r8
-	movs r1, 0x4
-	movs r2, 0xA
-	mov r3, r10
-	bl sub_809D104
-	adds r1, r6, 0x4
-	movs r0, 0
-	str r0, [sp]
-	str r7, [sp, 0x4]
-	str r4, [sp, 0x8]
-	mov r0, r9
-	str r0, [sp, 0xC]
-	mov r0, r8
-	movs r2, 0xA
-	mov r3, r10
-	bl sub_809D104
-	b _080A3AAA
-	.align 2, 0
-_080A3A58: .4byte gUnknown_08E96EC8
-_080A3A5C:
-	cmp r3, 0x1
-	bne _080A3AAA
-	subs r0, r4, 0x1
-	lsls r0, 17
-	lsrs r7, r0, 16
-	cmp r4, 0x1
-	bne _080A3A6C
-	movs r7, 0xA
-_080A3A6C:
-	ldr r6, _080A3ABC @ =gUnknown_08E96EC8
-	str r5, [sp]
-	str r7, [sp, 0x4]
-	movs r0, 0x8
-	subs r0, r5
-	lsls r0, 16
-	lsrs r0, 16
-	str r0, [sp, 0x8]
-	movs r4, 0x2
-	str r4, [sp, 0xC]
-	mov r0, r8
-	movs r1, 0x4
-	movs r2, 0xA
-	adds r3, r6, 0
-	bl sub_809D104
-	movs r1, 0xC
-	subs r1, r5
-	lsls r1, 16
-	lsrs r1, 16
-	movs r0, 0
-	str r0, [sp]
-	mov r0, r9
-	str r0, [sp, 0x4]
-	str r5, [sp, 0x8]
-	str r4, [sp, 0xC]
-	mov r0, r8
-	movs r2, 0xA
-	adds r3, r6, 0
-	bl sub_809D104
-_080A3AAA:
-	add sp, 0x10
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A3ABC: .4byte gUnknown_08E96EC8
-	thumb_func_end sub_80A39E4
-
-	thumb_func_start sub_80A3AC0
-sub_80A3AC0: @ 80A3AC0
-	push {r4-r6,lr}
-	adds r3, r0, 0
-	lsls r1, 24
-	lsrs r4, r1, 24
-	movs r2, 0
-	ldr r1, _080A3AE4 @ =0x0000024a
-	ldr r0, _080A3AE8 @ =0x0000107d
-	adds r6, r0, 0
-	subs r0, 0x1
-	adds r5, r0, 0
-_080A3AD4:
-	cmp r2, r4
-	bne _080A3AEC
-	lsls r0, r2, 1
-	adds r0, r3
-	adds r0, r1
-	strh r6, [r0]
-	b _080A3AF4
-	.align 2, 0
-_080A3AE4: .4byte 0x0000024a
-_080A3AE8: .4byte 0x0000107d
-_080A3AEC:
-	lsls r0, r2, 1
-	adds r0, r3
-	adds r0, r1
-	strh r5, [r0]
-_080A3AF4:
-	adds r0, r2, 0x1
-	lsls r0, 24
-	lsrs r2, r0, 24
-	cmp r2, 0x4
-	bls _080A3AD4
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80A3AC0
-
-	thumb_func_start sub_80A3B04
-sub_80A3B04: @ 80A3B04
-	push {r4-r6,lr}
-	adds r5, r0, 0
-	ldr r4, _080A3BA4 @ =gUnknown_02038559
-	ldrb r0, [r4]
-	lsls r1, 24
-	asrs r6, r1, 24
-	adds r0, r6, r0
-	strb r0, [r4]
-	lsls r0, 24
-	asrs r0, 24
-	cmp r0, 0x4
-	ble _080A3B20
-	movs r0, 0
-	strb r0, [r4]
-_080A3B20:
-	movs r0, 0
-	ldrsb r0, [r4, r0]
-	cmp r0, 0
-	bge _080A3B2C
-	movs r0, 0x4
-	strb r0, [r4]
-_080A3B2C:
-	bl sub_80A76A0
-	bl sub_80A7590
-	ldr r2, _080A3BA8 @ =gUnknown_03005D24
-	ldr r1, _080A3BAC @ =gBagPockets
-	movs r0, 0
-	ldrsb r0, [r4, r0]
-	lsls r0, 3
-	adds r0, r1
-	ldr r0, [r0]
-	str r0, [r2]
-	ldrb r0, [r4]
-	bl sub_80A3D24
-	ldr r0, _080A3BB0 @ =gUnknown_0203855A
-	movs r4, 0
-	strb r4, [r0]
-	adds r0, r5, 0
-	bl sub_80A3954
-	adds r0, r5, 0
-	movs r1, 0
-	movs r2, 0x10
-	movs r3, 0x3
-	bl sub_80A396C
-	adds r0, r5, 0
-	movs r1, 0
-	bl sub_80A39B8
-	ldr r1, _080A3BB4 @ =gUnknown_0203855B
-	movs r0, 0x6
-	strb r0, [r1]
-	ldr r0, _080A3BB8 @ =gUnknown_02038562
-	strb r4, [r0]
-	ldr r4, _080A3BBC @ =sub_80A37F8
-	adds r0, r4, 0
-	bl FindTaskIdByFunc
-	lsls r0, 24
-	lsrs r2, r0, 24
-	cmp r2, 0xFF
-	bne _080A3B90
-	adds r0, r4, 0
-	movs r1, 0x8
-	bl CreateTask
-	lsls r0, 24
-	lsrs r2, r0, 24
-_080A3B90:
-	ldr r1, _080A3BC0 @ =gTasks
-	lsls r0, r2, 2
-	adds r0, r2
-	lsls r0, 3
-	adds r0, r1
-	strh r6, [r0, 0x12]
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A3BA4: .4byte gUnknown_02038559
-_080A3BA8: .4byte gUnknown_03005D24
-_080A3BAC: .4byte gBagPockets
-_080A3BB0: .4byte gUnknown_0203855A
-_080A3BB4: .4byte gUnknown_0203855B
-_080A3BB8: .4byte gUnknown_02038562
-_080A3BBC: .4byte sub_80A37F8
-_080A3BC0: .4byte gTasks
-	thumb_func_end sub_80A3B04
-
-	thumb_func_start swap32
-swap32: @ 80A3BC4
-	ldr r3, [r0]
-	ldr r2, [r1]
-	str r2, [r0]
-	str r3, [r1]
-	bx lr
-	thumb_func_end swap32
-
 	thumb_func_start sub_80A3BD0
 sub_80A3BD0: @ 80A3BD0
 	push {r4-r7,lr}
diff --git a/data/item_menu.s b/data/item_menu.s
index f66961b46..05bd3ea48 100644
--- a/data/item_menu.s
+++ b/data/item_menu.s
@@ -3,28 +3,6 @@
 
 	.section .rodata
 
-@ pointer to items, capacity
-	.align 2
-gBagPockets:: @ 83C1618
-	.4byte gSaveBlock1 + 0x560, 20 @ Items
-	.4byte gSaveBlock1 + 0x600, 16 @ Poké Balls
-	.4byte gSaveBlock1 + 0x640, 64 @ TMs & HMs
-	.4byte gSaveBlock1 + 0x740, 46 @ Berries
-	.4byte gSaveBlock1 + 0x5B0, 20 @ Key Items
-
-	.align 2
-gUnknown_083C1640:: @ 83C1640
-	.4byte OtherText_Use, sub_80A5B78
-	.4byte OtherText_Toss, sub_80A5F14
-	.4byte gOtherText_CancelNoTerminator, sub_80A5F80
-	.4byte OtherText_Register, sub_80A5FAC
-	.4byte OtherText_Use, ItemMenu_UseInBattle
-	.4byte gOtherText_CancelNoTerminator, sub_80A7124
-	.4byte OtherText_Give2, ItemMenu_Give
-	.4byte OtherText_CheckTag, sub_80A6178
-	.4byte gOtherText_CancelWithTerminator, 0x0
-	.4byte OtherText_Confirm, sub_80A69E0
-
 @ 6-byte entries; format of entry is unknown
 gUnknown_083C1690:: @ 83C1690
 	.byte 0, 1, 6, 2, 0, 0
diff --git a/include/graphics.h b/include/graphics.h
index 4d042b3b6..12ffd16fe 100644
--- a/include/graphics.h
+++ b/include/graphics.h
@@ -2440,12 +2440,16 @@ extern const u8 gBagScreen_Gfx[];
 extern const u8 gBagScreenMale_Pal[];
 extern const u8 gBagScreenFemale_Pal[];
 extern const u16 gUnknown_08E77004[];
-
+extern const u8 gBuyMenuFrame_Gfx[];
+extern const u8 gMenuMoneyPal[];
+extern const u8 gBuyMenuFrame_Tilemap[];
+extern const u8 gMenuMoneyGfx[];
 extern const u8 gMenuPokeblock_Gfx[];
-extern const u8 gMenuPokeblock_Tilemap[];
 extern const u8 gMenuPokeblock_Pal[];
-
 extern const u8 gMenuPokeblockDevice_Gfx[];
 extern const u8 gMenuPokeblockDevice_Pal[];
+extern const u8 gMenuPokeblock_Tilemap[];
+
+extern const u8 gUnknown_08E96EC8[];
 
 #endif  // GUARD_GRAPHICS_H
diff --git a/include/item.h b/include/item.h
index f51ea3ae5..54a252302 100644
--- a/include/item.h
+++ b/include/item.h
@@ -28,7 +28,9 @@ struct BagPocket
     u8 capacity;
 };
 
-extern struct BagPocket gBagPockets[5];
+#define NUM_BAG_POCKETS 5
+
+extern const struct BagPocket gBagPockets[NUM_BAG_POCKETS];
 
 void CopyItemName(u16 itemId, u8 *string);
 bool8 IsBagPocketNonEmpty(u8 pocket);
diff --git a/ld_script.txt b/ld_script.txt
index f5a13b0c4..7796658d4 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -397,6 +397,8 @@ SECTIONS {
         data/pokemon_icon.o(.rodata);
         data/pokemon_summary_screen.o(.rodata);
         data/fldeff_cut.o(.rodata);
+        src/item_menu.o(.data);  /* HACK: gBagPockets must not be declared const for item.c to match. */
+        src/item_menu.o(.rodata);
         data/item_menu.o(.rodata);
         data/battle_anim_80A7E7C.o(.rodata);
         data/item.o(.rodata);
diff --git a/src/item.c b/src/item.c
index a5ed99a82..33aa87768 100644
--- a/src/item.c
+++ b/src/item.c
@@ -129,6 +129,7 @@ bool8 CheckBagHasSpace(u16 itemId, u16 count)
     return TRUE;
 }
 
+#ifdef NONMATCHING
 bool8 AddBagItem(u16 itemId, u16 count)
 {
     u8 i;
@@ -193,6 +194,158 @@ bool8 AddBagItem(u16 itemId, u16 count)
     memcpy(gBagPockets[pocket].itemSlots, newItems, gBagPockets[pocket].capacity * sizeof(struct ItemSlot));
     return TRUE;
 }
+#else
+__attribute__((naked))
+bool8 AddBagItem(u16 itemId, u16 count)
+{
+    asm(".syntax unified\n\
+    push {r4-r7,lr}\n\
+    mov r7, r9\n\
+    mov r6, r8\n\
+    push {r6,r7}\n\
+    sub sp, 0x100\n\
+    lsls r0, 16\n\
+    lsrs r0, 16\n\
+    mov r8, r0\n\
+    lsls r1, 16\n\
+    lsrs r4, r1, 16\n\
+    bl ItemId_GetPocket\n\
+    lsls r0, 24\n\
+    cmp r0, 0\n\
+    beq _080A9510\n\
+    mov r0, r8\n\
+    bl ItemId_GetPocket\n\
+    subs r0, 0x1\n\
+    lsls r0, 24\n\
+    lsrs r6, r0, 24\n\
+    ldr r1, _080A94F8 @ =gBagPockets\n\
+    lsls r0, r6, 3\n\
+    adds r5, r0, r1\n\
+    ldr r1, [r5]\n\
+    ldrb r2, [r5, 0x4]\n\
+    lsls r2, 2\n\
+    mov r0, sp\n\
+    bl memcpy\n\
+    ldr r7, _080A94FC @ =0x000003e7\n\
+    cmp r6, 0x3\n\
+    beq _080A9468\n\
+    movs r7, 0x63\n\
+_080A9468:\n\
+    movs r1, 0\n\
+    ldrb r0, [r5, 0x4]\n\
+    cmp r1, r0\n\
+    bcs _080A94B2\n\
+    subs r0, r6, 0x2\n\
+    lsls r0, 24\n\
+    lsrs r0, 24\n\
+    mov r12, r0\n\
+_080A9478:\n\
+    lsls r0, r1, 2\n\
+    mov r2, sp\n\
+    adds r3, r2, r0\n\
+    ldrh r0, [r3]\n\
+    cmp r0, r8\n\
+    bne _080A94A6\n\
+    ldrh r2, [r3, 0x2]\n\
+    adds r0, r2, r4\n\
+    cmp r0, r7\n\
+    ble _080A9500\n\
+    mov r0, r12\n\
+    cmp r0, 0x1\n\
+    bls _080A9510\n\
+    subs r0, r7, r2\n\
+    subs r0, r4, r0\n\
+    lsls r0, 16\n\
+    lsrs r4, r0, 16\n\
+    strh r7, [r3, 0x2]\n\
+    ldr r2, _080A94F8 @ =gBagPockets\n\
+    mov r9, r2\n\
+    lsls r3, r6, 3\n\
+    cmp r4, 0\n\
+    beq _080A9516\n\
+_080A94A6:\n\
+    adds r0, r1, 0x1\n\
+    lsls r0, 24\n\
+    lsrs r1, r0, 24\n\
+    ldrb r0, [r5, 0x4]\n\
+    cmp r1, r0\n\
+    bcc _080A9478\n\
+_080A94B2:\n\
+    ldr r2, _080A94F8 @ =gBagPockets\n\
+    mov r9, r2\n\
+    lsls r3, r6, 3\n\
+    cmp r4, 0\n\
+    beq _080A9516\n\
+    movs r1, 0\n\
+    adds r0, r3, r2\n\
+    ldrb r0, [r0, 0x4]\n\
+    cmp r1, r0\n\
+    bcs _080A94F2\n\
+    mov r6, r9\n\
+    adds r5, r3, r6\n\
+_080A94CA:\n\
+    lsls r0, r1, 2\n\
+    mov r6, sp\n\
+    adds r2, r6, r0\n\
+    ldrh r0, [r2]\n\
+    cmp r0, 0\n\
+    bne _080A94E6\n\
+    mov r0, r8\n\
+    strh r0, [r2]\n\
+    cmp r4, r7\n\
+    bls _080A9514\n\
+    subs r0, r4, r7\n\
+    lsls r0, 16\n\
+    lsrs r4, r0, 16\n\
+    strh r7, [r2, 0x2]\n\
+_080A94E6:\n\
+    adds r0, r1, 0x1\n\
+    lsls r0, 24\n\
+    lsrs r1, r0, 24\n\
+    ldrb r2, [r5, 0x4]\n\
+    cmp r1, r2\n\
+    bcc _080A94CA\n\
+_080A94F2:\n\
+    cmp r4, 0\n\
+    beq _080A9516\n\
+    b _080A9510\n\
+    .align 2, 0\n\
+_080A94F8: .4byte gBagPockets\n\
+_080A94FC: .4byte 0x000003e7\n\
+_080A9500:\n\
+    strh r0, [r3, 0x2]\n\
+    ldr r0, _080A950C @ =gBagPockets\n\
+    lsls r1, r6, 3\n\
+    adds r1, r0\n\
+    b _080A951A\n\
+    .align 2, 0\n\
+_080A950C: .4byte gBagPockets\n\
+_080A9510:\n\
+    movs r0, 0\n\
+    b _080A9528\n\
+_080A9514:\n\
+    strh r4, [r2, 0x2]\n\
+_080A9516:\n\
+    mov r6, r9\n\
+    adds r1, r3, r6\n\
+_080A951A:\n\
+    ldr r0, [r1]\n\
+    ldrb r2, [r1, 0x4]\n\
+    lsls r2, 2\n\
+    mov r1, sp\n\
+    bl memcpy\n\
+    movs r0, 0x1\n\
+_080A9528:\n\
+    add sp, 0x100\n\
+    pop {r3,r4}\n\
+    mov r8, r3\n\
+    mov r9, r4\n\
+    pop {r4-r7}\n\
+    pop {r1}\n\
+    bx r1\n\
+    .syntax divided\n");
+}
+#endif
 
 bool8 RemoveBagItem(u16 itemId, u16 count)
 {
diff --git a/src/item_menu.c b/src/item_menu.c
index bbb91296f..91853588b 100644
--- a/src/item_menu.c
+++ b/src/item_menu.c
@@ -8,6 +8,8 @@
 #include "palette.h"
 #include "rom4.h"
 #include "sprite.h"
+#include "strings.h"
+#include "strings2.h"
 #include "task.h"
 #include "text.h"
 #include "unknown_task.h"
@@ -22,38 +24,98 @@ struct UnknownStruct1
     u8 unk3;
 };
 
+extern u8 gUnknown_02038558;
 extern s8 gUnknown_02038559;
 extern u8 gUnknown_0203855A;
 extern u8 gUnknown_0203855B;
 extern u8 gUnknown_0203855C;
+extern u8 gUnknown_02038562;
+extern u8 gUnknown_02038564;
 extern u8 gUnknown_03000700;
 extern u8 gUnknown_03000701;
+extern const u8 *gUnknown_03000704;
 extern struct UnknownStruct1 gUnknown_03005D10[];
 extern struct ItemSlot *gUnknown_03005D24;
+extern bool8 gLinkOpen;
 
 extern void gpu_pal_allocator_reset__manage_upper_four(void);
 extern void sub_80F9020(void);
 extern void sub_80F9988();
+extern void sub_809D104(u16 *, u16, u16, const u8 *, u16, u16, u16, u16);
 
 extern const struct CompressedSpriteSheet gUnknown_083C1CC8;
 extern const struct CompressedSpriteSheet gUnknown_083C1CD0;
 extern const struct CompressedSpritePalette gUnknown_083C1CD8;
 
+const struct BagPocket gBagPockets[NUM_BAG_POCKETS] =
+{
+    // pointer to items, capacity
+    {gSaveBlock1.bagPocket_Items, 20},
+    {gSaveBlock1.bagPocket_PokeBalls, 16},
+    {gSaveBlock1.bagPocket_TMHM, 64},
+    {gSaveBlock1.bagPocket_Berries, 46},
+    {gSaveBlock1.bagPocket_KeyItems, 20},
+};
+
+void sub_80A5B78(u8);
+void sub_80A5F14(u8);
+void sub_80A5F80(u8);
+void sub_80A5FAC(u8);
+void ItemMenu_UseInBattle(u8);
+void sub_80A7124(u8);
+void ItemMenu_Give(u8);
+void sub_80A6178(u8);
+void sub_80A69E0(u8);
+
+const struct MenuAction2 gUnknown_083C1640[] =
+{
+    {OtherText_Use, sub_80A5B78},
+    {OtherText_Toss, sub_80A5F14},
+    {gOtherText_CancelNoTerminator, sub_80A5F80},
+    {OtherText_Register, sub_80A5FAC},
+    {OtherText_Use, ItemMenu_UseInBattle},
+    {gOtherText_CancelNoTerminator, sub_80A7124},
+    {OtherText_Give2, ItemMenu_Give},
+    {OtherText_CheckTag, sub_80A6178},
+    {gOtherText_CancelWithTerminator, NULL},
+    {OtherText_Confirm, sub_80A69E0},
+};
+
+extern const u8 gUnknown_083C1690[][6];
+/*
+const u8 gUnknown_083C1690[][6] =
+{
+    {0, 1, 6, 2, 0, 0},
+    {6, 1, 8, 2, 0, 0},
+    {0, 8, 6, 2, 0, 0},
+    {7, 0, 1, 8, 6, 2},
+    {0, 8, 3, 2, 0, 0},
+};
+*/
+
 void sub_80A34E8(void);
 bool8 sub_80A3520(void);
 void sub_80A362C(void);
 void sub_80A3740(void);
+void sub_80A396C(u16 *, u8, u8, u8);
 void sub_80A39B8(u16 *, u8);
+void sub_80A39E4(u16 *, u8, u8, s8);
 void sub_80A3AC0(u16 *, u8);
-void sub_80A3C34();
+void sub_80A3C34(struct ItemSlot *, u32);
 void sub_80A3D08(void);
+void sub_80A3D24(u8);
 void sub_80A3D40(void);
 void sub_80A48E8();
 void ItemListMenu_InitDescription();
+void ItemListMenu_ChangeDescription();
+void sub_80A4F68(u8);
+void sub_80A50C8(u8);
 void ItemListMenu_InitMenu(void);
 void sub_80A740C(void);
 void sub_80A751C(void);
+void sub_80A7590(void);
 void sub_80A7630(void);
+void sub_80A76A0(void);
 void sub_80A770C(void);
 void sub_80A7828(void);
 void sub_80A78B8(void);
@@ -337,3 +399,176 @@ void ClearBag(void)
         ClearItemSlots(gBagPockets[i].itemSlots, gBagPockets[i].capacity);
     sub_80A3684();
 }
+
+extern const u16 gUnknown_083C1704[];
+
+void sub_80A3740(void)
+{
+    u16 arr[2];
+    
+    // TODO: This is a local array
+    memcpy(arr, gUnknown_083C1704, 4);
+    LoadPalette(&arr[1], 0xD1, sizeof(arr[1]));
+    LoadPalette(&arr[0], 0xD8, sizeof(arr[0]));
+}
+
+void sub_80A3770(void)
+{
+    if (gUnknown_03000701 == 0)
+    {
+        gUnknown_03000704 = gUnknown_083C1690[gUnknown_02038559];
+        if (gUnknown_02038559 != 3)
+            gUnknown_02038564 = 4;
+        else
+            gUnknown_02038564 = 6;
+    }
+}
+
+void sub_80A37C0(u8 taskId)
+{
+    gTasks[taskId].func = sub_80A50C8;
+    StartVerticalScrollIndicators(0);
+    StartVerticalScrollIndicators(1);
+    StartVerticalScrollIndicators(2);
+    StartVerticalScrollIndicators(3);
+}
+
+void sub_80A37F8(u8 taskId)
+{
+    u8 r5 = gUnknown_0203855A;
+    
+    if (r5 < 16)
+    {
+        gUnknown_0203855A++;
+        sub_80A396C(gBGTilemapBuffers[2], r5, gUnknown_0203855A, 0x4F);
+        sub_80A39E4(gBGTilemapBuffers[2], gUnknown_02038559 + 1, gUnknown_0203855A / 2, gTasks[taskId].data[5]);
+        gUnknown_02038558 = 1;
+        sub_80A48E8(taskId, r5 / 2, gUnknown_0203855A / 2 - 1);
+        gUnknown_02038558 = 0;
+        return;
+    }
+    
+    if (gLinkOpen == TRUE)
+    {
+        u32 val = gUnknown_03005D10[gUnknown_02038559].unk1 + gUnknown_03005D10[gUnknown_02038559].unk0;
+        
+        ItemListMenu_ChangeDescription((s16)gUnknown_03005D24[val].itemId, gUnknown_02038562);
+        gUnknown_02038562++;
+    }
+    else
+    {
+        while (gUnknown_02038562 < 3)
+        {
+            u32 val = gUnknown_03005D10[gUnknown_02038559].unk1 + gUnknown_03005D10[gUnknown_02038559].unk0;
+        
+            ItemListMenu_ChangeDescription((s16)gUnknown_03005D24[val].itemId, gUnknown_02038562);
+            gUnknown_02038562++;
+        }
+    }
+    if (gUnknown_02038562 == 3)
+    {
+        gUnknown_0203855A = 16;
+        gUnknown_0203855B = gUnknown_02038559 + 1;
+        sub_80A37C0(FindTaskIdByFunc(sub_80A4F68));
+        DestroyTask(taskId);
+        ItemListMenu_InitMenu();
+        sub_80F979C(2, 0);
+        sub_80F979C(3, 0);
+    }
+}
+
+void sub_80A3954(u16 *a)
+{
+    CpuCopy16(gUnknown_08E77004, a, 0x800);
+}
+
+void sub_80A396C(u16 *a, u8 b, u8 c, u8 d)
+{
+    u16 *dst = a + 14 + (b + 2) * 32;
+    u16 i;
+    
+    while (c > b++)
+    {
+        for (i = 0; i < 15; i++)
+            dst[i] = d;
+        dst += 32;
+    }
+}
+
+void sub_80A39B8(u16 *a, u8 b)
+{
+    u8 var = b * 2;
+    
+    sub_809D104(a, 4, 10, gUnknown_08E96EC8, 0, var, 8, 2);
+}
+
+void sub_80A39E4(u16 *a, u8 b, u8 c, s8 d)
+{
+    u16 r2 = b * 2;
+    u16 r7;
+    
+    if (d == -1)
+    {
+        r7 = (b + 1) * 2;
+        if (b == 5)
+            r7 = 2;
+        
+        sub_809D104(a, 4, 10, gUnknown_08E96EC8, 8 - c, r2, c, 2);
+        sub_809D104(a, c + 4, 10, gUnknown_08E96EC8, 0, r7, 8 - c, 2);
+    }
+    else if (d == 1)
+    {
+        r7 = (b - 1) * 2;
+        if (b == 1)
+            r7 = 10;
+        
+        sub_809D104(a, 4, 10, gUnknown_08E96EC8, c, r7, 8 - c, 2);
+        sub_809D104(a, 12 - c, 10, gUnknown_08E96EC8, 0, r2, c, 2);
+    }
+}
+
+void sub_80A3AC0(u16 *a, u8 b)
+{
+    u8 i;
+    
+    for (i = 0; i < 5; i++)
+    {
+        if (i == b)
+            a[0x125 + i] = 0x107D;
+        else
+            a[0x125 + i] = 0x107C;
+    }
+}
+
+void sub_80A3B04(u16 *a, s8 b)
+{
+    u8 taskId;
+    
+    gUnknown_02038559 += b;
+    if (gUnknown_02038559 >= NUM_BAG_POCKETS)
+        gUnknown_02038559 = 0;
+    if (gUnknown_02038559 < 0)
+        gUnknown_02038559 = NUM_BAG_POCKETS - 1;
+    sub_80A76A0();
+    sub_80A7590();
+    gUnknown_03005D24 = gBagPockets[gUnknown_02038559].itemSlots;
+    sub_80A3D24(gUnknown_02038559);
+    gUnknown_0203855A = 0;
+    sub_80A3954(a);
+    sub_80A396C(a, 0, 16, 3);
+    sub_80A39B8(a, 0);
+    gUnknown_0203855B = 6;
+    gUnknown_02038562 = 0;
+    taskId = FindTaskIdByFunc(sub_80A37F8);
+    if (taskId == 0xFF)
+        taskId = CreateTask(sub_80A37F8, 8);
+    gTasks[taskId].data[5] = b;
+}
+
+void swap32(struct ItemSlot *a, struct ItemSlot *b)
+{
+    struct ItemSlot temp = *a;
+    
+    *a = *b;
+    *b = temp;
+}