through sub_810A554

8 files changed, 473 insertions, 1255 deletions

diff --git a/asm/item_menu.s b/asm/item_menu.s
index f13ae7f38..d42c65d45 100644
--- a/asm/item_menu.s
+++ b/asm/item_menu.s
@@ -5,1174 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_8109BB8
-sub_8109BB8: @ 8109BB8
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	adds r0, r4, 0
-	bl sub_8109890
-	ldr r1, _08109BDC @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r0, r1
-	ldr r1, _08109BE0 @ =sub_8109BE4
-	str r1, [r0]
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08109BDC: .4byte gTasks
-_08109BE0: .4byte sub_8109BE4
-	thumb_func_end sub_8109BB8
-
-	thumb_func_start sub_8109BE4
-sub_8109BE4: @ 8109BE4
-	push {r4-r6,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	adds r6, r5, 0
-	bl sub_80BF72C
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	beq _08109C42
-	bl Menu_ProcessInputNoWrapAround
-	lsls r0, 24
-	asrs r4, r0, 24
-	movs r0, 0x2
-	negs r0, r0
-	cmp r4, r0
-	beq _08109C42
-	adds r0, 0x1
-	cmp r4, r0
-	bne _08109C24
-	movs r0, 0x5
-	bl PlaySE
-	ldr r0, _08109C20 @ =gUnknown_8452EB8
-	ldr r1, [r0, 0x24]
-	adds r0, r5, 0
-	bl _call_via_r1
-	b _08109C42
-	.align 2, 0
-_08109C20: .4byte gUnknown_8452EB8
-_08109C24:
-	movs r0, 0x5
-	bl PlaySE
-	ldr r1, _08109C48 @ =gUnknown_8452EB8
-	ldr r0, _08109C4C @ =gUnknown_203AD24
-	ldr r0, [r0]
-	adds r0, r4
-	ldrb r0, [r0]
-	lsls r0, 3
-	adds r1, 0x4
-	adds r0, r1
-	ldr r1, [r0]
-	adds r0, r6, 0
-	bl _call_via_r1
-_08109C42:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08109C48: .4byte gUnknown_8452EB8
-_08109C4C: .4byte gUnknown_203AD24
-	thumb_func_end sub_8109BE4
-
-	thumb_func_start Task_ItemMenuAction_Use
-Task_ItemMenuAction_Use: @ 8109C50
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r5, _08109CA0 @ =gSpecialVar_ItemId
-	ldrh r0, [r5]
-	bl ItemId_GetFieldFunc
-	cmp r0, 0
-	beq _08109CB4
-	movs r0, 0xA
-	bl sub_810BA3C
-	movs r0, 0x6
-	bl sub_810BA3C
-	movs r0, 0
-	bl PutWindowTilemap
-	movs r0, 0x1
-	bl PutWindowTilemap
-	movs r0, 0
-	bl ScheduleBgCopyTilemapToVram
-	bl CalculatePlayerPartyCount
-	lsls r0, 24
-	cmp r0, 0
-	bne _08109CA4
-	ldrh r0, [r5]
-	bl ItemId_GetType
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _08109CA4
-	adds r0, r4, 0
-	bl sub_810A170
-	b _08109CB4
-	.align 2, 0
-_08109CA0: .4byte gSpecialVar_ItemId
-_08109CA4:
-	ldr r0, _08109CBC @ =gSpecialVar_ItemId
-	ldrh r0, [r0]
-	bl ItemId_GetFieldFunc
-	adds r1, r0, 0
-	adds r0, r4, 0
-	bl _call_via_r1
-_08109CB4:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08109CBC: .4byte gSpecialVar_ItemId
-	thumb_func_end Task_ItemMenuAction_Use
-
-	thumb_func_start Task_ItemMenuAction_Toss
-Task_ItemMenuAction_Toss: @ 8109CC0
-	push {r4-r7,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r6, r0, 3
-	ldr r7, _08109D14 @ =gTasks+0x8
-	adds r4, r6, r7
-	movs r0, 0xA
-	bl sub_810BAD8
-	lsls r0, 24
-	lsrs r0, 24
-	bl ClearWindowTilemap
-	movs r0, 0x6
-	bl sub_810BAD8
-	lsls r0, 24
-	lsrs r0, 24
-	bl ClearWindowTilemap
-	movs r0, 0xA
-	bl sub_810BA3C
-	movs r0, 0x6
-	bl sub_810BA3C
-	movs r0, 0
-	bl PutWindowTilemap
-	movs r0, 0x1
-	strh r0, [r4, 0x10]
-	movs r1, 0x4
-	ldrsh r0, [r4, r1]
-	cmp r0, 0x1
-	bne _08109D18
-	adds r0, r5, 0
-	bl sub_8109D38
-	b _08109D2A
-	.align 2, 0
-_08109D14: .4byte gTasks+0x8
-_08109D18:
-	ldrh r0, [r4, 0x2]
-	ldr r1, _08109D30 @ =gText_TossOutHowManyStrVar1s
-	bl sub_810971C
-	adds r0, r7, 0
-	subs r0, 0x8
-	adds r0, r6, r0
-	ldr r1, _08109D34 @ =sub_8109DEC
-	str r1, [r0]
-_08109D2A:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08109D30: .4byte gText_TossOutHowManyStrVar1s
-_08109D34: .4byte sub_8109DEC
-	thumb_func_end Task_ItemMenuAction_Toss
-
-	thumb_func_start sub_8109D38
-sub_8109D38: @ 8109D38
-	push {r4,r5,lr}
-	sub sp, 0x14
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	lsls r1, r4, 2
-	adds r1, r4
-	lsls r1, 3
-	ldr r0, _08109D9C @ =gTasks+0x8
-	adds r1, r0
-	ldr r0, _08109DA0 @ =gStringVar2
-	movs r2, 0x10
-	ldrsh r1, [r1, r2]
-	movs r2, 0
-	movs r3, 0x3
-	bl ConvertIntToDecimalStringN
-	ldr r5, _08109DA4 @ =gStringVar4
-	ldr r1, _08109DA8 @ =gText_ThrowAwayStrVar2OfThisItemQM
-	adds r0, r5, 0
-	bl StringExpandPlaceholders
-	movs r0, 0x6
-	movs r1, 0x1
-	bl sub_810B9DC
-	lsls r0, 24
-	lsrs r0, 24
-	movs r1, 0x2
-	str r1, [sp]
-	movs r2, 0x1
-	str r2, [sp, 0x4]
-	movs r1, 0
-	str r1, [sp, 0x8]
-	str r1, [sp, 0xC]
-	str r2, [sp, 0x10]
-	movs r1, 0x2
-	adds r2, r5, 0
-	movs r3, 0
-	bl sub_810B8F0
-	ldr r1, _08109DAC @ =gUnknown_8452F50
-	adds r0, r4, 0
-	bl sub_810BAE8
-	add sp, 0x14
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08109D9C: .4byte gTasks+0x8
-_08109DA0: .4byte gStringVar2
-_08109DA4: .4byte gStringVar4
-_08109DA8: .4byte gText_ThrowAwayStrVar2OfThisItemQM
-_08109DAC: .4byte gUnknown_8452F50
-	thumb_func_end sub_8109D38
-
-	thumb_func_start sub_8109DB0
-sub_8109DB0: @ 8109DB0
-	push {r4,r5,lr}
-	adds r5, r0, 0
-	lsls r5, 24
-	lsrs r5, 24
-	lsls r4, r5, 2
-	adds r4, r5
-	lsls r4, 3
-	ldr r0, _08109DE8 @ =gTasks+0x8
-	adds r4, r0
-	movs r0, 0x6
-	bl sub_810BA3C
-	movs r0, 0x1
-	bl PutWindowTilemap
-	movs r0, 0
-	bl ScheduleBgCopyTilemapToVram
-	ldrb r0, [r4]
-	movs r1, 0x1
-	bl bag_menu_print_cursor_
-	adds r0, r5, 0
-	bl sub_810910C
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08109DE8: .4byte gTasks+0x8
-	thumb_func_end sub_8109DB0
-
-	thumb_func_start sub_8109DEC
-sub_8109DEC: @ 8109DEC
-	push {r4-r6,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	adds r6, r5, 0
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	ldr r1, _08109E1C @ =gTasks+0x8
-	adds r4, r0, r1
-	adds r0, r4, 0
-	adds r0, 0x10
-	ldrh r1, [r4, 0x4]
-	bl AdjustQuantityAccordingToDPadInput
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _08109E20
-	movs r1, 0x10
-	ldrsh r0, [r4, r1]
-	movs r1, 0x3
-	bl sub_81097E4
-	b _08109EA2
-	.align 2, 0
-_08109E1C: .4byte gTasks+0x8
-_08109E20:
-	ldr r0, _08109E60 @ =gMain
-	ldrh r1, [r0, 0x2E]
-	movs r0, 0x1
-	ands r0, r1
-	cmp r0, 0
-	beq _08109E64
-	movs r0, 0x5
-	bl PlaySE
-	movs r0, 0x6
-	bl sub_810BAD8
-	lsls r0, 24
-	lsrs r0, 24
-	bl ClearWindowTilemap
-	movs r0, 0x6
-	bl sub_810BA3C
-	movs r0, 0
-	bl sub_810BA3C
-	movs r0, 0
-	bl ScheduleBgCopyTilemapToVram
-	bl sub_8108978
-	adds r0, r5, 0
-	bl sub_8109D38
-	b _08109EA2
-	.align 2, 0
-_08109E60: .4byte gMain
-_08109E64:
-	movs r0, 0x2
-	ands r0, r1
-	cmp r0, 0
-	beq _08109EA2
-	movs r0, 0x5
-	bl PlaySE
-	movs r0, 0x6
-	bl sub_810BA3C
-	movs r0, 0
-	bl sub_810BA3C
-	movs r0, 0
-	bl PutWindowTilemap
-	movs r0, 0x1
-	bl PutWindowTilemap
-	movs r0, 0
-	bl ScheduleBgCopyTilemapToVram
-	ldrb r0, [r4]
-	movs r1, 0x1
-	bl bag_menu_print_cursor_
-	bl sub_8108978
-	adds r0, r6, 0
-	bl sub_810910C
-_08109EA2:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8109DEC
-
-	thumb_func_start sub_8109EA8
-sub_8109EA8: @ 8109EA8
-	push {r4-r6,lr}
-	sub sp, 0x14
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r4, r0, 2
-	adds r4, r0
-	lsls r4, 3
-	ldr r5, _08109F28 @ =gTasks+0x8
-	adds r6, r4, r5
-	movs r0, 0x6
-	bl sub_810BA3C
-	ldr r0, _08109F2C @ =gUnknown_203ACFC
-	ldrb r0, [r0, 0x6]
-	adds r0, 0x1
-	lsls r0, 24
-	lsrs r0, 24
-	ldrh r1, [r6, 0x2]
-	bl BagGetItemIdByPocketPosition
-	lsls r0, 16
-	lsrs r0, 16
-	ldr r1, _08109F30 @ =gStringVar1
-	bl CopyItemName
-	ldr r0, _08109F34 @ =gStringVar2
-	movs r2, 0x10
-	ldrsh r1, [r6, r2]
-	movs r2, 0
-	movs r3, 0x3
-	bl ConvertIntToDecimalStringN
-	ldr r6, _08109F38 @ =gStringVar4
-	ldr r1, _08109F3C @ =gText_ThrewAwayStrVar2StrVar1s
-	adds r0, r6, 0
-	bl StringExpandPlaceholders
-	movs r0, 0x6
-	movs r1, 0x3
-	bl sub_810B9DC
-	lsls r0, 24
-	lsrs r0, 24
-	movs r1, 0x2
-	str r1, [sp]
-	movs r2, 0x1
-	str r2, [sp, 0x4]
-	movs r1, 0
-	str r1, [sp, 0x8]
-	str r1, [sp, 0xC]
-	str r2, [sp, 0x10]
-	movs r1, 0x2
-	adds r2, r6, 0
-	movs r3, 0
-	bl sub_810B8F0
-	subs r5, 0x8
-	adds r4, r5
-	ldr r0, _08109F40 @ =sub_8109F44
-	str r0, [r4]
-	add sp, 0x14
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08109F28: .4byte gTasks+0x8
-_08109F2C: .4byte gUnknown_203ACFC
-_08109F30: .4byte gStringVar1
-_08109F34: .4byte gStringVar2
-_08109F38: .4byte gStringVar4
-_08109F3C: .4byte gText_ThrewAwayStrVar2StrVar1s
-_08109F40: .4byte sub_8109F44
-	thumb_func_end sub_8109EA8
-
-	thumb_func_start sub_8109F44
-sub_8109F44: @ 8109F44
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	lsls r0, 2
-	add r0, r8
-	lsls r0, 3
-	ldr r1, _08109FEC @ =gTasks+0x8
-	adds r7, r0, r1
-	ldr r0, _08109FF0 @ =gMain
-	ldrh r1, [r0, 0x2E]
-	movs r0, 0x1
-	ands r0, r1
-	cmp r0, 0
-	bne _08109F6E
-	movs r0, 0x2
-	ands r0, r1
-	cmp r0, 0
-	beq _08109FE0
-_08109F6E:
-	movs r0, 0x5
-	bl PlaySE
-	ldr r0, _08109FF4 @ =gSpecialVar_ItemId
-	ldrh r0, [r0]
-	ldrh r1, [r7, 0x10]
-	bl RemoveBagItem
-	movs r0, 0x6
-	bl sub_810BA3C
-	ldrb r0, [r7]
-	ldr r4, _08109FF8 @ =gUnknown_203ACFC
-	ldrh r2, [r4, 0x6]
-	lsls r2, 1
-	adds r5, r4, 0
-	adds r5, 0xE
-	adds r1, r2, r5
-	adds r6, r4, 0
-	adds r6, 0x8
-	adds r2, r6
-	bl DestroyListMenuTask
-	ldrb r0, [r4, 0x6]
-	bl sub_8108DC8
-	ldrb r0, [r4, 0x6]
-	bl sub_81089F4
-	ldrb r0, [r4, 0x6]
-	bl sub_810842C
-	ldr r0, _08109FFC @ =gMultiuseListMenuTemplate
-	ldrh r2, [r4, 0x6]
-	lsls r2, 1
-	adds r5, r2, r5
-	ldrh r1, [r5]
-	adds r2, r6
-	ldrh r2, [r2]
-	bl ListMenuInit
-	lsls r0, 24
-	lsrs r0, 24
-	strh r0, [r7]
-	movs r0, 0x1
-	bl PutWindowTilemap
-	movs r0, 0
-	bl ScheduleBgCopyTilemapToVram
-	ldrb r0, [r7]
-	movs r1, 0x1
-	bl bag_menu_print_cursor_
-	mov r0, r8
-	bl sub_810910C
-_08109FE0:
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08109FEC: .4byte gTasks+0x8
-_08109FF0: .4byte gMain
-_08109FF4: .4byte gSpecialVar_ItemId
-_08109FF8: .4byte gUnknown_203ACFC
-_08109FFC: .4byte gMultiuseListMenuTemplate
-	thumb_func_end sub_8109F44
-
-	thumb_func_start Task_ItemMenuAction_ToggleSelect
-Task_ItemMenuAction_ToggleSelect: @ 810A000
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	lsls r0, 2
-	add r0, r8
-	lsls r0, 3
-	ldr r1, _0810A040 @ =gTasks+0x8
-	adds r7, r0, r1
-	ldr r0, _0810A044 @ =gUnknown_203ACFC
-	ldrb r0, [r0, 0x6]
-	adds r0, 0x1
-	lsls r0, 24
-	lsrs r0, 24
-	ldrh r1, [r7, 0x2]
-	bl BagGetItemIdByPocketPosition
-	lsls r0, 16
-	lsrs r2, r0, 16
-	ldr r0, _0810A048 @ =gSaveBlock1Ptr
-	ldr r0, [r0]
-	ldr r3, _0810A04C @ =0x00000296
-	adds r1, r0, r3
-	ldrh r0, [r1]
-	cmp r0, r2
-	bne _0810A050
-	movs r0, 0
-	strh r0, [r1]
-	b _0810A052
-	.align 2, 0
-_0810A040: .4byte gTasks+0x8
-_0810A044: .4byte gUnknown_203ACFC
-_0810A048: .4byte gSaveBlock1Ptr
-_0810A04C: .4byte 0x00000296
-_0810A050:
-	strh r2, [r1]
-_0810A052:
-	ldrb r0, [r7]
-	ldr r4, _0810A0A0 @ =gUnknown_203ACFC
-	ldrh r2, [r4, 0x6]
-	lsls r2, 1
-	adds r5, r4, 0
-	adds r5, 0xE
-	adds r1, r2, r5
-	adds r6, r4, 0
-	adds r6, 0x8
-	adds r2, r6
-	bl DestroyListMenuTask
-	ldrb r0, [r4, 0x6]
-	bl sub_810842C
-	ldr r0, _0810A0A4 @ =gMultiuseListMenuTemplate
-	ldrh r2, [r4, 0x6]
-	lsls r2, 1
-	adds r5, r2, r5
-	ldrh r1, [r5]
-	adds r2, r6
-	ldrh r2, [r2]
-	bl ListMenuInit
-	lsls r0, 24
-	lsrs r0, 24
-	strh r0, [r7]
-	movs r0, 0
-	movs r1, 0x1
-	bl CopyWindowToVram
-	mov r0, r8
-	bl Task_ItemMenuAction_Cancel
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A0A0: .4byte gUnknown_203ACFC
-_0810A0A4: .4byte gMultiuseListMenuTemplate
-	thumb_func_end Task_ItemMenuAction_ToggleSelect
-
-	thumb_func_start Task_ItemMenuAction_Give
-Task_ItemMenuAction_Give: @ 810A0A8
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	adds r7, r4, 0
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r6, r0, 3
-	ldr r0, _0810A110 @ =gTasks+0x8
-	mov r8, r0
-	adds r1, r6, r0
-	ldr r0, _0810A114 @ =gUnknown_203ACFC
-	ldrb r0, [r0, 0x6]
-	adds r0, 0x1
-	lsls r0, 24
-	lsrs r0, 24
-	ldrh r1, [r1, 0x2]
-	bl BagGetItemIdByPocketPosition
-	lsls r0, 16
-	lsrs r5, r0, 16
-	movs r0, 0xA
-	bl sub_810BA3C
-	movs r0, 0x6
-	bl sub_810BA3C
-	movs r0, 0
-	bl PutWindowTilemap
-	movs r0, 0x1
-	bl PutWindowTilemap
-	movs r0, 0
-	movs r1, 0x1
-	bl CopyWindowToVram
-	adds r0, r5, 0
-	bl itemid_80BF6D8_mail_related
-	lsls r0, 24
-	cmp r0, 0
-	bne _0810A120
-	ldr r2, _0810A118 @ =gUnknown_841630F
-	ldr r3, _0810A11C @ =sub_810A1D0
-	adds r0, r4, 0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-	b _0810A166
-	.align 2, 0
-_0810A110: .4byte gTasks+0x8
-_0810A114: .4byte gUnknown_203ACFC
-_0810A118: .4byte gUnknown_841630F
-_0810A11C: .4byte sub_810A1D0
-_0810A120:
-	adds r0, r5, 0
-	bl itemid_is_unique
-	lsls r0, 24
-	cmp r0, 0
-	bne _0810A160
-	bl CalculatePlayerPartyCount
-	lsls r0, 24
-	cmp r0, 0
-	bne _0810A13E
-	adds r0, r4, 0
-	bl sub_810A170
-	b _0810A166
-_0810A13E:
-	ldr r0, _0810A154 @ =gUnknown_203AD10
-	ldr r1, [r0]
-	ldr r0, _0810A158 @ =CB2_ChooseMonToGiveItem
-	str r0, [r1]
-	mov r0, r8
-	subs r0, 0x8
-	adds r0, r6, r0
-	ldr r1, _0810A15C @ =ItemMenu_StartFadeToExitCallback
-	str r1, [r0]
-	b _0810A166
-	.align 2, 0
-_0810A154: .4byte gUnknown_203AD10
-_0810A158: .4byte CB2_ChooseMonToGiveItem
-_0810A15C: .4byte ItemMenu_StartFadeToExitCallback
-_0810A160:
-	adds r0, r7, 0
-	bl sub_810A18C
-_0810A166:
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end Task_ItemMenuAction_Give
-
-	thumb_func_start sub_810A170
-sub_810A170: @ 810A170
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r2, _0810A184 @ =gText_ThereIsNoPokemon
-	ldr r3, _0810A188 @ =sub_810A1D0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A184: .4byte gText_ThereIsNoPokemon
-_0810A188: .4byte sub_810A1D0
-	thumb_func_end sub_810A170
-
-	thumb_func_start sub_810A18C
-sub_810A18C: @ 810A18C
-	push {r4,r5,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	ldr r0, _0810A1BC @ =gSpecialVar_ItemId
-	ldrh r0, [r0]
-	ldr r1, _0810A1C0 @ =gStringVar1
-	bl CopyItemName
-	ldr r5, _0810A1C4 @ =gStringVar4
-	ldr r1, _0810A1C8 @ =gText_ItemCantBeHeld
-	adds r0, r5, 0
-	bl StringExpandPlaceholders
-	ldr r3, _0810A1CC @ =sub_810A1D0
-	adds r0, r4, 0
-	movs r1, 0x2
-	adds r2, r5, 0
-	bl DisplayItemMessageInBag
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A1BC: .4byte gSpecialVar_ItemId
-_0810A1C0: .4byte gStringVar1
-_0810A1C4: .4byte gStringVar4
-_0810A1C8: .4byte gText_ItemCantBeHeld
-_0810A1CC: .4byte sub_810A1D0
-	thumb_func_end sub_810A18C
-
-	thumb_func_start sub_810A1D0
-sub_810A1D0: @ 810A1D0
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, _0810A1F4 @ =gMain
-	ldrh r1, [r0, 0x2E]
-	movs r0, 0x1
-	ands r0, r1
-	cmp r0, 0
-	beq _0810A1EE
-	movs r0, 0x5
-	bl PlaySE
-	adds r0, r4, 0
-	bl sub_810A1F8
-_0810A1EE:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A1F4: .4byte gMain
-	thumb_func_end sub_810A1D0
-
-	thumb_func_start sub_810A1F8
-sub_810A1F8: @ 810A1F8
-	push {r4-r6,lr}
-	mov r6, r9
-	mov r5, r8
-	push {r5,r6}
-	mov r8, r0
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	lsls r5, r0, 2
-	add r5, r8
-	lsls r5, 3
-	ldr r0, _0810A27C @ =gTasks+0x8
-	adds r5, r0
-	movs r0, 0x5
-	bl sub_810BA9C
-	ldrb r0, [r5]
-	ldr r4, _0810A280 @ =gUnknown_203ACFC
-	ldrh r2, [r4, 0x6]
-	lsls r2, 1
-	adds r6, r4, 0
-	adds r6, 0xE
-	adds r1, r2, r6
-	movs r3, 0x8
-	adds r3, r4
-	mov r9, r3
-	add r2, r9
-	bl DestroyListMenuTask
-	ldrb r0, [r4, 0x6]
-	bl sub_8108DC8
-	ldrb r0, [r4, 0x6]
-	bl sub_81089F4
-	ldrb r0, [r4, 0x6]
-	bl sub_810842C
-	ldr r0, _0810A284 @ =gMultiuseListMenuTemplate
-	ldrh r2, [r4, 0x6]
-	lsls r2, 1
-	adds r6, r2, r6
-	ldrh r1, [r6]
-	add r2, r9
-	ldrh r2, [r2]
-	bl ListMenuInit
-	lsls r0, 24
-	lsrs r0, 24
-	strh r0, [r5]
-	movs r0, 0
-	bl ScheduleBgCopyTilemapToVram
-	ldrb r0, [r5]
-	movs r1, 0x1
-	bl bag_menu_print_cursor_
-	mov r0, r8
-	bl sub_810910C
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A27C: .4byte gTasks+0x8
-_0810A280: .4byte gUnknown_203ACFC
-_0810A284: .4byte gMultiuseListMenuTemplate
-	thumb_func_end sub_810A1F8
-
-	thumb_func_start sub_810A288
-sub_810A288: @ 810A288
-	push {r4-r6,lr}
-	sub sp, 0x4
-	adds r5, r0, 0
-	lsls r5, 24
-	lsrs r5, 24
-	lsls r4, r5, 2
-	adds r4, r5
-	lsls r4, 3
-	ldr r0, _0810A2D8 @ =gTasks+0x8
-	adds r4, r0
-	ldrb r0, [r4]
-	mov r6, sp
-	adds r6, 0x2
-	mov r1, sp
-	adds r2, r6, 0
-	bl ListMenuGetScrollAndRow
-	mov r0, sp
-	ldrh r0, [r0]
-	ldrh r1, [r6]
-	adds r0, r1
-	bl sub_8108818
-	movs r0, 0
-	bl PutWindowTilemap
-	movs r0, 0
-	bl ScheduleBgCopyTilemapToVram
-	ldrb r0, [r4]
-	movs r1, 0x1
-	bl bag_menu_print_cursor_
-	adds r0, r5, 0
-	bl sub_810910C
-	add sp, 0x4
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A2D8: .4byte gTasks+0x8
-	thumb_func_end sub_810A288
-
-	thumb_func_start Task_ItemMenuAction_Cancel
-Task_ItemMenuAction_Cancel: @ 810A2DC
-	push {r4,lr}
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	movs r0, 0xA
-	bl sub_810BA3C
-	movs r0, 0x6
-	bl sub_810BA3C
-	movs r0, 0
-	bl PutWindowTilemap
-	movs r0, 0x1
-	bl PutWindowTilemap
-	movs r0, 0
-	bl ScheduleBgCopyTilemapToVram
-	ldr r1, _0810A320 @ =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r0, r1
-	ldrb r0, [r0, 0x8]
-	movs r1, 0x1
-	bl bag_menu_print_cursor_
-	adds r0, r4, 0
-	bl sub_810910C
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A320: .4byte gTasks
-	thumb_func_end Task_ItemMenuAction_Cancel
-
-	thumb_func_start sub_810A324
-sub_810A324: @ 810A324
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r5, _0810A36C @ =gSpecialVar_ItemId
-	ldrh r0, [r5]
-	bl ItemId_GetBattleFunc
-	cmp r0, 0
-	beq _0810A364
-	movs r0, 0xA
-	bl sub_810BA3C
-	movs r0, 0x6
-	bl sub_810BA3C
-	movs r0, 0
-	bl PutWindowTilemap
-	movs r0, 0x1
-	bl PutWindowTilemap
-	movs r0, 0
-	movs r1, 0x1
-	bl CopyWindowToVram
-	ldrh r0, [r5]
-	bl ItemId_GetBattleFunc
-	adds r1, r0, 0
-	adds r0, r4, 0
-	bl _call_via_r1
-_0810A364:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A36C: .4byte gSpecialVar_ItemId
-	thumb_func_end sub_810A324
-
-	thumb_func_start sub_810A370
-sub_810A370: @ 810A370
-	push {r4-r7,lr}
-	mov r7, r9
-	mov r6, r8
-	push {r6,r7}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r7, r0, 3
-	ldr r0, _0810A3BC @ =gTasks+0x8
-	mov r9, r0
-	adds r1, r7, r0
-	ldr r2, _0810A3C0 @ =gUnknown_203ACFC
-	mov r8, r2
-	ldrb r0, [r2, 0x6]
-	adds r0, 0x1
-	lsls r0, 24
-	lsrs r0, 24
-	ldrh r1, [r1, 0x2]
-	bl BagGetItemIdByPocketPosition
-	lsls r0, 16
-	lsrs r4, r0, 16
-	adds r6, r4, 0
-	adds r0, r4, 0
-	bl itemid_80BF6D8_mail_related
-	lsls r0, 24
-	cmp r0, 0
-	bne _0810A3CC
-	ldr r2, _0810A3C4 @ =gUnknown_841630F
-	ldr r3, _0810A3C8 @ =sub_810A1D0
-	adds r0, r5, 0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-	b _0810A426
-	.align 2, 0
-_0810A3BC: .4byte gTasks+0x8
-_0810A3C0: .4byte gUnknown_203ACFC
-_0810A3C4: .4byte gUnknown_841630F
-_0810A3C8: .4byte sub_810A1D0
-_0810A3CC:
-	movs r0, 0xB6
-	lsls r0, 1 @ ITEM_TM_CASE
-	cmp r4, r0
-	bne _0810A3DC
-	ldr r0, _0810A3D8 @ =sub_810A434
-	b _0810A3E4
-	.align 2, 0
-_0810A3D8: .4byte sub_810A434
-_0810A3DC:
-	ldr r0, _0810A3F0 @ =ITEM_BERRY_POUCH
-	cmp r4, r0
-	bne _0810A3F8
-	ldr r0, _0810A3F4 @ =sub_810A448
-_0810A3E4:
-	bl ItemMenu_SetExitCallback
-	adds r0, r5, 0
-	bl ItemMenu_StartFadeToExitCallback
-	b _0810A426
-	.align 2, 0
-_0810A3F0: .4byte 0x0000016d @ ITEM_BERRY_POUCH
-_0810A3F4: .4byte sub_810A448
-_0810A3F8:
-	mov r1, r8
-	ldrh r0, [r1, 0x6]
-	cmp r0, 0x1
-	beq _0810A420
-	adds r0, r6, 0
-	bl itemid_is_unique
-	lsls r0, 24
-	cmp r0, 0
-	bne _0810A420
-	bl sub_8108CB4
-	mov r0, r9
-	subs r0, 0x8
-	adds r0, r7, r0
-	ldr r1, _0810A41C @ =ItemMenu_StartFadeToExitCallback
-	str r1, [r0]
-	b _0810A426
-	.align 2, 0
-_0810A41C: .4byte ItemMenu_StartFadeToExitCallback
-_0810A420:
-	adds r0, r5, 0
-	bl sub_810A18C
-_0810A426:
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_810A370
-
-	thumb_func_start sub_810A434
-sub_810A434: @ 810A434
-	push {lr}
-	ldr r1, _0810A444 @ =sub_810A45C
-	movs r0, 0x1
-	movs r2, 0
-	bl InitTMCase
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A444: .4byte sub_810A45C
-	thumb_func_end sub_810A434
-
-	thumb_func_start sub_810A448
-sub_810A448: @ 810A448
-	push {lr}
-	ldr r1, _0810A458 @ =sub_810A45C
-	movs r0, 0x1
-	movs r2, 0
-	bl InitBerryPouch
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A458: .4byte sub_810A45C
-	thumb_func_end sub_810A448
-
-	thumb_func_start sub_810A45C
-sub_810A45C: @ 810A45C
-	push {lr}
-	bl CB2_SelectBagItemToGive
-	pop {r0}
-	bx r0
-	thumb_func_end sub_810A45C
-
-	thumb_func_start sub_810A468
-sub_810A468: @ 810A468
-	push {r4-r7,lr}
-	mov r7, r9
-	mov r6, r8
-	push {r6,r7}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r7, r0, 3
-	ldr r0, _0810A4B4 @ =gTasks+0x8
-	mov r9, r0
-	adds r1, r7, r0
-	ldr r2, _0810A4B8 @ =gUnknown_203ACFC
-	mov r8, r2
-	ldrb r0, [r2, 0x6]
-	adds r0, 0x1
-	lsls r0, 24
-	lsrs r0, 24
-	ldrh r1, [r1, 0x2]
-	bl BagGetItemIdByPocketPosition
-	lsls r0, 16
-	lsrs r4, r0, 16
-	adds r6, r4, 0
-	adds r0, r4, 0
-	bl ItemIsMail
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _0810A4C4
-	ldr r2, _0810A4BC @ =gUnknown_841630F
-	ldr r3, _0810A4C0 @ =sub_810A1D0
-	adds r0, r5, 0
-	movs r1, 0x2
-	bl DisplayItemMessageInBag
-	b _0810A51E
-	.align 2, 0
-_0810A4B4: .4byte gTasks+0x8
-_0810A4B8: .4byte gUnknown_203ACFC
-_0810A4BC: .4byte gUnknown_841630F
-_0810A4C0: .4byte sub_810A1D0
-_0810A4C4:
-	movs r0, 0xB6
-	lsls r0, 1 @ ITEM_TM_CASE
-	cmp r4, r0
-	bne _0810A4D4
-	ldr r0, _0810A4D0 @ =sub_810A52C
-	b _0810A4DC
-	.align 2, 0
-_0810A4D0: .4byte sub_810A52C
-_0810A4D4:
-	ldr r0, _0810A4E8 @ =0x0000016d @ ITEM_BERRY_POUCH
-	cmp r4, r0
-	bne _0810A4F0
-	ldr r0, _0810A4EC @ =sub_810A540
-_0810A4DC:
-	bl ItemMenu_SetExitCallback
-	adds r0, r5, 0
-	bl ItemMenu_StartFadeToExitCallback
-	b _0810A51E
-	.align 2, 0
-_0810A4E8: .4byte 0x0000016d
-_0810A4EC: .4byte sub_810A540
-_0810A4F0:
-	mov r1, r8
-	ldrh r0, [r1, 0x6]
-	cmp r0, 0x1
-	beq _0810A518
-	adds r0, r6, 0
-	bl itemid_is_unique
-	lsls r0, 24
-	cmp r0, 0
-	bne _0810A518
-	bl sub_8108CB4
-	mov r0, r9
-	subs r0, 0x8
-	adds r0, r7, r0
-	ldr r1, _0810A514 @ =ItemMenu_StartFadeToExitCallback
-	str r1, [r0]
-	b _0810A51E
-	.align 2, 0
-_0810A514: .4byte ItemMenu_StartFadeToExitCallback
-_0810A518:
-	adds r0, r5, 0
-	bl sub_810A18C
-_0810A51E:
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_810A468
-
-	thumb_func_start sub_810A52C
-sub_810A52C: @ 810A52C
-	push {lr}
-	ldr r1, _0810A53C @ =sub_810A554
-	movs r0, 0x3
-	movs r2, 0
-	bl InitTMCase
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A53C: .4byte sub_810A554
-	thumb_func_end sub_810A52C
-
-	thumb_func_start sub_810A540
-sub_810A540: @ 810A540
-	push {lr}
-	ldr r1, _0810A550 @ =sub_810A554
-	movs r0, 0x3
-	movs r2, 0
-	bl InitBerryPouch
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A550: .4byte sub_810A554
-	thumb_func_end sub_810A540
-
-	thumb_func_start sub_810A554
-sub_810A554: @ 810A554
-	push {lr}
-	ldr r2, _0810A564 @ =sub_808CE60
-	movs r0, 0x4
-	movs r1, 0x3
-	bl GoToBagMenu
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810A564: .4byte sub_808CE60
-	thumb_func_end sub_810A554
-
 	thumb_func_start sub_810A568
 sub_810A568: @ 810A568
 	push {r4-r7,lr}
diff --git a/data/item_menu.s b/data/item_menu.s
deleted file mode 100644
index 66e13cca0..000000000
--- a/data/item_menu.s
+++ /dev/null
@@ -1,62 +0,0 @@
-#include "constants/region_map.h"
-#include "constants/flags.h"
-#include "constants/moves.h"
-#include "constants/item_menu.h"
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-	.section .rodata
-	.align 2
-
-gUnknown_8452F18:: @ 8452F18
-	.byte 0x00, 0x03, 0x01, 0x04
-	.byte 0x00, 0x02, 0x04, 0x0b
-	.byte 0x03, 0x01, 0x04, 0x0b
-
-gUnknown_8452F24:: @ 8452F24
-	.byte 0x06, 0x03, 0x01, 0x04
-
-gUnknown_8452F28:: @ 8452F28
-	.byte 0x03, 0x04
-	.byte 0x04, 0x0b
-	.byte 0x03, 0x04
-
-gUnknown_8452F2E:: @ 8452F2E
-	.byte 0x07, 0x04
-
-gUnknown_8452F30:: @ 8452F30
-	.byte 0x05, 0x04
-
-gUnknown_8452F32:: @ 8452F32
-	.byte 0x04, 0x0b
-
-gUnknown_8452F34:: @ 8452F34
-	.4byte sub_8109BB8
-	.4byte sub_810A370
-	.4byte sub_810A568
-	.4byte sub_810AB40
-	.4byte sub_810A468
-	.4byte sub_8109BB8
-	.4byte NULL
-
-gUnknown_8452F50:: @ 8452F50
-	.4byte sub_8109EA8
-	.4byte sub_8109DB0
-
-gUnknown_8452F58:: @ 8452F58
-	.4byte sub_810A940
-	.4byte sub_810A720
-
-gUnknown_8452F60:: @ 8452F60
-	.string "{COLOR_HIGHLIGHT_SHADOW RED TRANSPARENT GREEN}$"
-
-gUnknown_8452F66:: @ 8452F66
-	.string "{COLOR_HIGHLIGHT_SHADOW LIGHT_GRAY TRANSPARENT BLACK}$"
-
-gUnknown_8452F6C:: @ 8452F6C
-	.byte 0, 8, 72, 1, 72, 72
-	.2byte 0, 2, 111, 111
-	.byte 0
-	.align 2
-
-gUnknown_8452F7C:: @ 8452F7C
-	.incbin "graphics/interface/select_button.4bpp"
diff --git a/data/strings.s b/data/strings.s
index fc6ab5cb5..c572f6bc9 100644
--- a/data/strings.s
+++ b/data/strings.s
@@ -567,7 +567,7 @@ gText_KeyItems2:: @ 0x84162DE
 gText_DepositItem:: @ 84162E8
 	.string "DEPOSIT ITEM$"
 
-gUnknown_84162F5:: @ 84162F5
+gText_CloseBag:: @ 84162F5
 	.string "CLOSE BAG$"
 
 gOtherText_StrVar1:: @ 84162FF
@@ -577,7 +577,7 @@ gText_IsSelected:: @ 8416301
 	.string " is\n"
 	.string "selected.$"
 
-gUnknown_841630F:: @ 841630F
+gText_CantWriteMailHere:: @ 841630F
 	.string "You can't write\n"
 	.string "MAIL here.$"
 
diff --git a/include/menu_helpers.h b/include/menu_helpers.h
index 1e75b336c..90aeb95f6 100644
--- a/include/menu_helpers.h
+++ b/include/menu_helpers.h
@@ -27,7 +27,7 @@ void CreateYesNoMenuWithCallbacks(u8 taskId, const struct WindowTemplate *templa
 u8 GetLRKeysState(void);
 u8 GetLRKeysPressedAndHeld(void);
 bool8 itemid_link_can_give_berry(u16 itemId);
-bool8 itemid_80BF6D8_mail_related(u16 itemId);
+bool8 CanWriteMailHere(u16 itemId);
 void ResetVramOamAndBgCntRegs(void);
 
 #endif //GUARD_MENU_HELPERS_H
diff --git a/include/strings.h b/include/strings.h
index 8dba28b3c..0d70d9e19 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -1047,6 +1047,7 @@ extern const u8 gOtherText_Deselect[];
 extern const u8 gText_Items2[];
 extern const u8 gText_PokeBalls2[];
 extern const u8 gText_KeyItems2[];
-extern const u8 gUnknown_84162F5[];
+extern const u8 gText_CloseBag[];
+extern const u8 gText_CantWriteMailHere[];
 
 #endif //GUARD_STRINGS_H
diff --git a/ld_script.txt b/ld_script.txt
index ddec18aa0..86b2448db 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -519,7 +519,6 @@ SECTIONS {
         data/pokedex_screen.o(.rodata);
         src/list_menu.o(.rodata);
         src/item_menu.o(.rodata);
-        data/item_menu.o(.rodata);
         src/save_location.o(.rodata);
         src/bag.o(.rodata);
         src/trainer_pokemon_sprites.o(.rodata);
diff --git a/src/item_menu.c b/src/item_menu.c
index 7d03c5170..1e2cbfa3b 100644
--- a/src/item_menu.c
+++ b/src/item_menu.c
@@ -2,6 +2,7 @@
 #include "gflib.h"
 #include "bag.h"
 #include "battle_controllers.h"
+#include "berry_pouch.h"
 #include "decompress.h"
 #include "field_player_avatar.h"
 #include "graphics.h"
@@ -16,8 +17,11 @@
 #include "menu_indicators.h"
 #include "new_menu_helpers.h"
 #include "overworld.h"
+#include "party_menu.h"
+#include "pokemon_storage_system.h"
 #include "scanline_effect.h"
 #include "strings.h"
+#include "tm_case.h"
 #include "constants/items.h"
 #include "constants/songs.h"
 
@@ -85,16 +89,29 @@ void sub_81095AC(u8 taskId, u32 itemIndex);
 void sub_810967C(u8 taskId, u32 itemIndex);
 void sub_8109854(u8 a0);
 void sub_8109BB8(u8 taskId);
+void sub_8109BE4(u8 taskId);
 void Task_ItemMenuAction_Use(u8 taskId);
 void Task_ItemMenuAction_Toss(u8 taskId);
+void sub_8109D38(u8 taskId);
+void sub_8109DB0(u8 taskId);
+void sub_8109DEC(u8 taskId);
+void sub_8109EA8(u8 taskId);
+void sub_8109F44(u8 taskId);
 void Task_ItemMenuAction_ToggleSelect(u8 taskId);
 void Task_ItemMenuAction_Give(u8 taskId);
+void sub_810A170(u8 taskId);
 void Task_ItemMenuAction_Cancel(u8 taskId);
-void sub_8109DB0(u8 taskId);
-void sub_8109EA8(u8 taskId);
+void sub_810A18C(u8 taskId);
+void sub_810A1D0(u8 taskId);
 void sub_810A324(u8 taskId);
 void sub_810A370(u8 taskId);
+void sub_810A434(void);
+void sub_810A448(void);
+void sub_810A45C(void);
 void sub_810A468(u8 taskId);
+void sub_810A52C(void);
+void sub_810A540(void);
+void sub_810A554(void);
 void sub_810A568(u8 taskId);
 void sub_810A720(u8 taskId);
 void sub_810A940(u8 taskId);
@@ -162,17 +179,99 @@ const struct MenuAction gUnknown_8452EB8[] = {
     [ITEMMENUACTION_DUMMY] = {gString_Dummy, {.void_u8 = NULL}}
 };
 
-extern const u8 gUnknown_8452F18[][4];
-extern const u8 gUnknown_8452F24[];
-extern const u8 gUnknown_8452F28[][2];
-extern const u8 gUnknown_8452F2E[];
-extern const u8 gUnknown_8452F30[];
-extern const u8 gUnknown_8452F32[];
-extern const TaskFunc gUnknown_8452F34[];
-extern const u8 gUnknown_8452F60[];
-extern const u8 gUnknown_8452F66[];
-extern const struct ScrollArrowsTemplate gUnknown_8452F6C;
-extern const u8 gUnknown_8452F7C[];
+const u8 gUnknown_8452F18[][4] = {
+    {
+        ITEMMENUACTION_USE,
+        ITEMMENUACTION_GIVE,
+        ITEMMENUACTION_TOSS,
+        ITEMMENUACTION_CANCEL
+    }, {
+        ITEMMENUACTION_USE,
+        ITEMMENUACTION_REGISTER,
+        ITEMMENUACTION_CANCEL,
+        ITEMMENUACTION_DUMMY
+    }, {
+        ITEMMENUACTION_GIVE,
+        ITEMMENUACTION_TOSS,
+        ITEMMENUACTION_CANCEL,
+        ITEMMENUACTION_DUMMY
+    }
+};
+
+const u8 gUnknown_8452F24[] = {
+    ITEMMENUACTION_CHECK,
+    ITEMMENUACTION_GIVE,
+    ITEMMENUACTION_TOSS,
+    ITEMMENUACTION_CANCEL
+};
+
+const u8 gUnknown_8452F28[][2] = {
+    {
+        ITEMMENUACTION_GIVE,
+        ITEMMENUACTION_CANCEL
+    }, {
+        ITEMMENUACTION_CANCEL,
+        ITEMMENUACTION_DUMMY
+    }, {
+        ITEMMENUACTION_GIVE,
+        ITEMMENUACTION_CANCEL
+    }
+};
+
+const u8 gUnknown_8452F2E[] = {
+    ITEMMENUACTION_OPEN,
+    ITEMMENUACTION_CANCEL
+};
+
+const u8 gUnknown_8452F30[] = {
+    ITEMMENUACTION_BATTLE_USE,
+    ITEMMENUACTION_CANCEL
+};
+
+const u8 gUnknown_8452F32[] = {
+    ITEMMENUACTION_CANCEL,
+    ITEMMENUACTION_DUMMY
+};
+
+const TaskFunc gUnknown_8452F34[] = {
+    sub_8109BB8,
+    sub_810A370,
+    sub_810A568,
+    sub_810AB40,
+    sub_810A468,
+    sub_8109BB8,
+    NULL
+};
+
+const struct YesNoFuncTable gUnknown_8452F50 = {
+    sub_8109EA8,
+    sub_8109DB0
+};
+
+const struct YesNoFuncTable gUnknown_8452F58 = {
+    sub_810A940,
+    sub_810A720
+};
+
+const u8 gUnknown_8452F60[] = _("{COLOR_HIGHLIGHT_SHADOW RED TRANSPARENT GREEN}");
+
+const u8 gUnknown_8452F66[] = _("{COLOR_HIGHLIGHT_SHADOW LIGHT_GRAY TRANSPARENT BLACK}");
+
+const struct ScrollArrowsTemplate gUnknown_8452F6C = {
+    .firstArrowType = SCROLL_ARROW_LEFT,
+    .firstX = 8,
+    .firstY = 72,
+    .secondArrowType = SCROLL_ARROW_RIGHT,
+    .secondX = 72,
+    .secondY = 72,
+    .fullyUpThreshold = 0,
+    .fullyDownThreshold = 2,
+    .tileTag = 111,
+    .palTag = 111,
+    .palNum = 0,
+};
+
+const u8 gUnknown_8452F7C[] = INCBIN_U8("graphics/interface/select_button.4bpp");
 
 void GoToBagMenu(u8 location, u8 a1, MainCallback a2)
 {
@@ -620,7 +719,7 @@ void sub_8108818(s32 itemIndex)
     if (itemIndex != gUnknown_203AD10->nItems[gUnknown_203ACFC.pocket])
         description = ItemId_GetDescription(BagGetItemIdByPocketPosition(gUnknown_203ACFC.pocket + 1, itemIndex));
     else
-        description = gUnknown_84162F5;
+        description = gText_CloseBag;
     FillWindowPixelBuffer(1, PIXEL_FILL(0));
     sub_810B8F0(1, 2, description, 0, 3, 2, 0, 0, 0);
 }
@@ -941,9 +1040,9 @@ void sub_8108F0C(u8 taskId)
     ListMenuGetScrollAndRow(data[0], &gUnknown_203ACFC.cursorPos[gUnknown_203ACFC.pocket], &gUnknown_203ACFC.itemsAbove[gUnknown_203ACFC.pocket]);
     switch (input)
     {
-    case -1:
+    case LIST_NOTHING_CHOSEN:
         return;
-    case -2:
+    case LIST_CANCEL:
         PlaySE(SE_SELECT);
         gSpecialVar_ItemId = ITEM_NONE;
         sub_8108CB4();
@@ -1123,9 +1222,9 @@ void sub_81094B0(u8 taskId)
     }
     switch (input)
     {
-    case -1:
+    case LIST_NOTHING_CHOSEN:
         return;
-    case -2:
+    case LIST_CANCEL:
         PlaySE(SE_SELECT);
         gUnknown_203AD10->field_04 = 0xFF;
         ListMenuGetScrollAndRow(data[0], &cursorPos, &itemsAbove);
@@ -1202,7 +1301,7 @@ void sub_8109854(u8 a0)
     ScheduleBgCopyTilemapToVram(1);
 }
 
-void sub_8109890(void)
+void sub_8109890(u8 taskId)
 {
     u8 r6;
     u8 r4;
@@ -1301,3 +1400,352 @@ void sub_8109890(void)
     StringExpandPlaceholders(gStringVar4, gOtherText_StrVar1);
     sub_810B8F0(r4, 2, gStringVar4, 0, 2, 1, 0, 0, 1);
 }
+
+void sub_8109BB8(u8 taskId)
+{
+    sub_8109890(taskId);
+    gTasks[taskId].func = sub_8109BE4;
+}
+
+void sub_8109BE4(u8 taskId)
+{
+    s8 input;
+    if ((u8)sub_80BF72C() != TRUE)
+    {
+        input = Menu_ProcessInputNoWrapAround();
+        switch (input)
+        {
+        case -1:
+            PlaySE(SE_SELECT);
+            gUnknown_8452EB8[ITEMMENUACTION_CANCEL].func.void_u8(taskId);
+            break;
+        case -2:
+            break;
+        default:
+            PlaySE(SE_SELECT);
+            gUnknown_8452EB8[gUnknown_203AD24[input]].func.void_u8(taskId);
+            break;
+        }
+    }
+}
+
+void Task_ItemMenuAction_Use(u8 taskId)
+{
+    if (ItemId_GetFieldFunc(gSpecialVar_ItemId) != NULL)
+    {
+        sub_810BA3C(10);
+        sub_810BA3C(6);
+        PutWindowTilemap(0);
+        PutWindowTilemap(1);
+        ScheduleBgCopyTilemapToVram(0);
+        if (CalculatePlayerPartyCount() == 0 && ItemId_GetType(gSpecialVar_ItemId) == 1)
+            sub_810A170(taskId);
+        else
+            ItemId_GetFieldFunc(gSpecialVar_ItemId)(taskId);
+    }
+}
+
+void Task_ItemMenuAction_Toss(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    ClearWindowTilemap(sub_810BAD8(10));
+    ClearWindowTilemap(sub_810BAD8(6));
+    sub_810BA3C(10);
+    sub_810BA3C(6);
+    PutWindowTilemap(0);
+    data[8] = 1;
+    if (data[2] == 1)
+    {
+        sub_8109D38(taskId);
+    }
+    else
+    {
+        sub_810971C(data[1], gText_TossOutHowManyStrVar1s);
+        gTasks[taskId].func = sub_8109DEC;
+    }
+}
+
+void sub_8109D38(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    ConvertIntToDecimalStringN(gStringVar2, data[8], STR_CONV_MODE_LEFT_ALIGN, 3);
+    StringExpandPlaceholders(gStringVar4, gText_ThrowAwayStrVar2OfThisItemQM);
+    sub_810B8F0(sub_810B9DC(6, 1), 2, gStringVar4, 0, 2, 1, 0, 0, 1);
+    sub_810BAE8(taskId, &gUnknown_8452F50);
+}
+
+void sub_8109DB0(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    sub_810BA3C(6);
+    PutWindowTilemap(1);
+    ScheduleBgCopyTilemapToVram(0);
+    bag_menu_print_cursor_(data[0], 1);
+    sub_810910C(taskId);
+}
+
+void sub_8109DEC(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    if (AdjustQuantityAccordingToDPadInput(&data[8], data[2]) == TRUE)
+    {
+        sub_81097E4(data[8], 3);
+    }
+    else if (JOY_NEW(A_BUTTON))
+    {
+        PlaySE(SE_SELECT);
+        ClearWindowTilemap(sub_810BAD8(6));
+        sub_810BA3C(6);
+        sub_810BA3C(0);
+        ScheduleBgCopyTilemapToVram(0);
+        sub_8108978();
+        sub_8109D38(taskId);
+    }
+    else if (JOY_NEW(B_BUTTON))
+    {
+        PlaySE(SE_SELECT);
+        sub_810BA3C(6);
+        sub_810BA3C(0);
+        PutWindowTilemap(0);
+        PutWindowTilemap(1);
+        ScheduleBgCopyTilemapToVram(0);
+        bag_menu_print_cursor_(data[0], 1);
+        sub_8108978();
+        sub_810910C(taskId);
+    }
+}
+
+void sub_8109EA8(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    sub_810BA3C(6);
+    CopyItemName(BagGetItemIdByPocketPosition(gUnknown_203ACFC.pocket + 1, data[1]), gStringVar1);
+    ConvertIntToDecimalStringN(gStringVar2, data[8], STR_CONV_MODE_LEFT_ALIGN, 3);
+    StringExpandPlaceholders(gStringVar4, gText_ThrewAwayStrVar2StrVar1s);
+    sub_810B8F0(sub_810B9DC(6, 3), 2, gStringVar4, 0, 2, 1, 0, 0, 1);
+    gTasks[taskId].func = sub_8109F44;
+}
+
+void sub_8109F44(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    if (JOY_NEW(A_BUTTON) || JOY_NEW(B_BUTTON))
+    {
+        PlaySE(SE_SELECT);
+        RemoveBagItem(gSpecialVar_ItemId, data[8]);
+        sub_810BA3C(6);
+        DestroyListMenuTask(data[0], &gUnknown_203ACFC.cursorPos[gUnknown_203ACFC.pocket], &gUnknown_203ACFC.itemsAbove[gUnknown_203ACFC.pocket]);
+        sub_8108DC8(gUnknown_203ACFC.pocket);
+        sub_81089F4(gUnknown_203ACFC.pocket);
+        sub_810842C(gUnknown_203ACFC.pocket);
+        data[0] = ListMenuInit(&gMultiuseListMenuTemplate, gUnknown_203ACFC.cursorPos[gUnknown_203ACFC.pocket], gUnknown_203ACFC.itemsAbove[gUnknown_203ACFC.pocket]);
+        PutWindowTilemap(1);
+        ScheduleBgCopyTilemapToVram(0);
+        bag_menu_print_cursor_(data[0], 1);
+        sub_810910C(taskId);
+    }
+}
+
+void Task_ItemMenuAction_ToggleSelect(u8 taskId)
+{
+    u16 itemId;
+    s16 *data = gTasks[taskId].data;
+    itemId = BagGetItemIdByPocketPosition(gUnknown_203ACFC.pocket + 1, data[1]);
+    if (gSaveBlock1Ptr->registeredItem == itemId)
+        gSaveBlock1Ptr->registeredItem = ITEM_NONE;
+    else
+        gSaveBlock1Ptr->registeredItem = itemId;
+
+    DestroyListMenuTask(data[0], &gUnknown_203ACFC.cursorPos[gUnknown_203ACFC.pocket], &gUnknown_203ACFC.itemsAbove[gUnknown_203ACFC.pocket]);
+    sub_810842C(gUnknown_203ACFC.pocket);
+    data[0] = ListMenuInit(&gMultiuseListMenuTemplate, gUnknown_203ACFC.cursorPos[gUnknown_203ACFC.pocket], gUnknown_203ACFC.itemsAbove[gUnknown_203ACFC.pocket]);
+    CopyWindowToVram(0, 1);
+    Task_ItemMenuAction_Cancel(taskId);
+}
+
+void Task_ItemMenuAction_Give(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    u16 itemId = BagGetItemIdByPocketPosition(gUnknown_203ACFC.pocket + 1, data[1]);
+    sub_810BA3C(10);
+    sub_810BA3C(6);
+    PutWindowTilemap(0);
+    PutWindowTilemap(1);
+    CopyWindowToVram(0, 1);
+    if (!CanWriteMailHere(itemId))
+        DisplayItemMessageInBag(taskId, 2, gText_CantWriteMailHere, sub_810A1D0);
+    else if (!itemid_is_unique(itemId))
+    {
+        if (CalculatePlayerPartyCount() == 0)
+        {
+            sub_810A170(taskId);
+        }
+        else
+        {
+            gUnknown_203AD10->exitCB = CB2_ChooseMonToGiveItem;
+            gTasks[taskId].func = ItemMenu_StartFadeToExitCallback;
+        }
+    }
+    else
+        sub_810A18C(taskId);
+}
+
+void sub_810A170(u8 taskId)
+{
+    DisplayItemMessageInBag(taskId, 2, gText_ThereIsNoPokemon, sub_810A1D0);
+}
+
+void sub_810A18C(u8 taskId)
+{
+    CopyItemName(gSpecialVar_ItemId, gStringVar1);
+    StringExpandPlaceholders(gStringVar4, gText_ItemCantBeHeld);
+    DisplayItemMessageInBag(taskId, 2, gStringVar4, sub_810A1D0);
+}
+
+void sub_810A1D0(u8 taskId)
+{
+    if (JOY_NEW(A_BUTTON))
+    {
+        PlaySE(SE_SELECT);
+        sub_810A1F8(taskId);
+    }
+}
+
+void sub_810A1F8(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    sub_810BA9C(5);
+    DestroyListMenuTask(data[0], &gUnknown_203ACFC.cursorPos[gUnknown_203ACFC.pocket], &gUnknown_203ACFC.itemsAbove[gUnknown_203ACFC.pocket]);
+    sub_8108DC8(gUnknown_203ACFC.pocket);
+    sub_81089F4(gUnknown_203ACFC.pocket);
+    sub_810842C(gUnknown_203ACFC.pocket);
+    data[0] = ListMenuInit(&gMultiuseListMenuTemplate, gUnknown_203ACFC.cursorPos[gUnknown_203ACFC.pocket], gUnknown_203ACFC.itemsAbove[gUnknown_203ACFC.pocket]);
+    ScheduleBgCopyTilemapToVram(0);
+    bag_menu_print_cursor_(data[0], 1);
+    sub_810910C(taskId);
+}
+
+void sub_810A288(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    u16 itemsAbove;
+    u16 cursorPos;
+    ListMenuGetScrollAndRow(data[0], &cursorPos, &itemsAbove);
+    sub_8108818(cursorPos + itemsAbove);
+    PutWindowTilemap(0);
+    ScheduleBgCopyTilemapToVram(0);
+    bag_menu_print_cursor_(data[0], 1);
+    sub_810910C(taskId);
+}
+
+void Task_ItemMenuAction_Cancel(u8 taskId)
+{
+    sub_810BA3C(10);
+    sub_810BA3C(6);
+    PutWindowTilemap(0);
+    PutWindowTilemap(1);
+    ScheduleBgCopyTilemapToVram(0);
+    bag_menu_print_cursor_(gTasks[taskId].data[0], 1);
+    sub_810910C(taskId);
+}
+
+void sub_810A324(u8 taskId)
+{
+    if (ItemId_GetBattleFunc(gSpecialVar_ItemId) != NULL)
+    {
+        sub_810BA3C(10);
+        sub_810BA3C(6);
+        PutWindowTilemap(0);
+        PutWindowTilemap(1);
+        CopyWindowToVram(0, 1);
+        ItemId_GetBattleFunc(gSpecialVar_ItemId)(taskId);
+    }
+}
+
+void sub_810A370(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    u16 itemId = BagGetItemIdByPocketPosition(gUnknown_203ACFC.pocket + 1, data[1]);
+    if (!CanWriteMailHere(itemId))
+    {
+        DisplayItemMessageInBag(taskId, 2, gText_CantWriteMailHere, sub_810A1D0);
+    }
+    else if (itemId == ITEM_TM_CASE)
+    {
+        ItemMenu_SetExitCallback(sub_810A434);
+        ItemMenu_StartFadeToExitCallback(taskId);
+    }
+    else if (itemId == ITEM_BERRY_POUCH)
+    {
+        ItemMenu_SetExitCallback(sub_810A448);
+        ItemMenu_StartFadeToExitCallback(taskId);
+    }
+    else if (gUnknown_203ACFC.pocket != POCKET_KEY_ITEMS - 1 && !itemid_is_unique(itemId))
+    {
+        sub_8108CB4();
+        gTasks[taskId].func = ItemMenu_StartFadeToExitCallback;
+    }
+    else
+    {
+        sub_810A18C(taskId);
+    }
+}
+
+void sub_810A434(void)
+{
+    InitTMCase(1, sub_810A45C, FALSE);
+}
+
+void sub_810A448(void)
+{
+    InitBerryPouch(1, sub_810A45C, FALSE);
+}
+
+void sub_810A45C(void)
+{
+    CB2_SelectBagItemToGive();
+}
+
+void sub_810A468(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    u16 itemId = BagGetItemIdByPocketPosition(gUnknown_203ACFC.pocket + 1, data[1]);
+    if (ItemIsMail(itemId) == TRUE)
+    {
+        DisplayItemMessageInBag(taskId, 2, gText_CantWriteMailHere, sub_810A1D0);
+    }
+    else if (itemId == ITEM_TM_CASE)
+    {
+        ItemMenu_SetExitCallback(sub_810A52C);
+        ItemMenu_StartFadeToExitCallback(taskId);
+    }
+    else if (itemId == ITEM_BERRY_POUCH)
+    {
+        ItemMenu_SetExitCallback(sub_810A540);
+        ItemMenu_StartFadeToExitCallback(taskId);
+    }
+    else if (gUnknown_203ACFC.pocket != POCKET_KEY_ITEMS - 1 && !itemid_is_unique(itemId))
+    {
+        sub_8108CB4();
+        gTasks[taskId].func = ItemMenu_StartFadeToExitCallback;
+    }
+    else
+    {
+        sub_810A18C(taskId);
+    }
+}
+
+void sub_810A52C(void)
+{
+    InitTMCase(3, sub_810A554, FALSE);
+}
+
+void sub_810A540(void)
+{
+    InitBerryPouch(3, sub_810A554, FALSE);
+}
+
+void sub_810A554(void)
+{
+    GoToBagMenu(4, 3, sub_808CE60);
+}
diff --git a/src/menu_helpers.c b/src/menu_helpers.c
index 905e3c1ea..53b9992a2 100644
--- a/src/menu_helpers.c
+++ b/src/menu_helpers.c
@@ -107,7 +107,7 @@ bool8 itemid_link_can_give_berry(u16 itemId)
         return FALSE;
 }
 
-bool8 itemid_80BF6D8_mail_related(u16 itemId)
+bool8 CanWriteMailHere(u16 itemId)
 {
     if (IsUpdateLinkStateCBActive() != TRUE && InUnionRoom() != TRUE)
         return TRUE;