Finish decompiling pyramid bag.

12 files changed, 783 insertions, 945 deletions

diff --git a/asm/battle_pyramid_bag.s b/asm/battle_pyramid_bag.s
deleted file mode 100644
index 23ad7172e..000000000
--- a/asm/battle_pyramid_bag.s
+++ /dev/null
@@ -1,576 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-
-
-
-	thumb_func_start sub_81C6DAC
-sub_81C6DAC: @ 81C6DAC
-	push {lr}
-	sub sp, 0x10
-	adds r3, r1, 0
-	lsls r0, 24
-	lsrs r0, 24
-	ldr r1, =gUnknown_0861F370
-	movs r2, 0x2
-	str r2, [sp]
-	movs r2, 0x1
-	str r2, [sp, 0x4]
-	movs r2, 0xE
-	str r2, [sp, 0x8]
-	str r3, [sp, 0xC]
-	movs r2, 0x1
-	movs r3, 0
-	bl CreateYesNoMenuWithCallbacks
-	add sp, 0x10
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81C6DAC
-
-	thumb_func_start DisplayItemMessageInBattlePyramid
-@ void DisplayItemMessageInBattlePyramid(u8 taskId, u8 *str, void ( *callback)(u8 taskId))
-DisplayItemMessageInBattlePyramid: @ 81C6DD8
-	push {r4-r6,lr}
-	sub sp, 0x10
-	adds r4, r0, 0
-	adds r5, r1, 0
-	adds r6, r2, 0
-	lsls r4, 24
-	lsrs r4, 24
-	movs r0, 0x2
-	movs r1, 0x11
-	bl FillWindowPixelBuffer
-	bl GetPlayerTextSpeed
-	lsls r0, 24
-	lsrs r0, 24
-	movs r1, 0x1
-	str r1, [sp]
-	str r0, [sp, 0x4]
-	str r5, [sp, 0x8]
-	str r6, [sp, 0xC]
-	adds r0, r4, 0
-	movs r1, 0x2
-	movs r2, 0xA
-	movs r3, 0xD
-	bl DisplayMessageAndContinueTask
-	movs r0, 0x1
-	bl schedule_bg_copy_tilemap_to_vram
-	add sp, 0x10
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end DisplayItemMessageInBattlePyramid
-
-	thumb_func_start sub_81C6E1C
-sub_81C6E1C: @ 81C6E1C
-	push {lr}
-	movs r0, 0x2
-	movs r1, 0
-	bl sub_8197DF8
-	movs r0, 0x2
-	bl ClearWindowTilemap
-	movs r0, 0x1
-	bl schedule_bg_copy_tilemap_to_vram
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81C6E1C
-
-	thumb_func_start sub_81C6E38
-sub_81C6E38: @ 81C6E38
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, =gUnknown_0203CF2C
-	ldr r2, =0x00000804
-	adds r1, r4, r2
-	ldr r0, [r0]
-	adds r5, r0, r1
-	ldrb r0, [r5]
-	cmp r0, 0xFF
-	beq _081C6E80
-	ldr r0, =0x00001024
-	adds r4, r0
-	adds r0, r4, 0
-	bl FreeSpriteTilesByTag
-	adds r0, r4, 0
-	bl FreeSpritePaletteByTag
-	ldrb r1, [r5]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	ldr r4, =gSprites
-	adds r0, r4
-	bl FreeSpriteOamMatrix
-	ldrb r1, [r5]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r4
-	bl DestroySprite
-	movs r0, 0xFF
-	strb r0, [r5]
-_081C6E80:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81C6E38
-
-	thumb_func_start sub_81C6E98
-sub_81C6E98: @ 81C6E98
-	push {r4,lr}
-	sub sp, 0x8
-	movs r0, 0x40
-	bl Alloc
-	adds r4, r0, 0
-	ldr r0, =gUnknown_08D9ADD0
-	adds r1, r4, 0
-	bl LZDecompressWram
-	ldr r0, =gSaveBlock2Ptr
-	ldr r0, [r0]
-	ldr r1, =0x00000ca9
-	adds r0, r1
-	ldrb r0, [r0]
-	lsls r0, 30
-	lsrs r0, 25
-	adds r0, r4, r0
-	str r0, [sp]
-	ldr r1, =0xffff0000
-	ldr r0, [sp, 0x4]
-	ands r0, r1
-	ldr r1, =0x00001024
-	orrs r0, r1
-	str r0, [sp, 0x4]
-	mov r0, sp
-	bl LoadSpritePalette
-	adds r0, r4, 0
-	bl Free
-	add sp, 0x8
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81C6E98
-
-	thumb_func_start sub_81C6EF4
-sub_81C6EF4: @ 81C6EF4
-	push {r4,lr}
-	ldr r0, =gUnknown_0203CF2C
-	ldr r4, [r0]
-	ldr r0, =0x00000804
-	adds r4, r0
-	ldr r0, =gUnknown_0861F3D4
-	movs r1, 0x44
-	movs r2, 0x38
-	movs r3, 0
-	bl CreateSprite
-	strb r0, [r4]
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81C6EF4
-
-	thumb_func_start sub_81C6F20
-sub_81C6F20: @ 81C6F20
-	push {r4,lr}
-	ldr r0, =gUnknown_0203CF2C
-	ldr r0, [r0]
-	ldr r1, =0x00000804
-	adds r0, r1
-	ldrb r1, [r0]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	ldr r1, =gSprites
-	adds r4, r0, r1
-	adds r0, r4, 0
-	adds r0, 0x3F
-	ldrb r1, [r0]
-	movs r0, 0x20
-	ands r0, r1
-	cmp r0, 0
-	beq _081C6F50
-	adds r0, r4, 0
-	movs r1, 0x1
-	bl StartSpriteAffineAnim
-	ldr r0, =sub_81C6F68
-	str r0, [r4, 0x1C]
-_081C6F50:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81C6F20
-
-	thumb_func_start sub_81C6F68
-sub_81C6F68: @ 81C6F68
-	push {r4,lr}
-	adds r4, r0, 0
-	adds r0, 0x3F
-	ldrb r1, [r0]
-	movs r0, 0x20
-	ands r0, r1
-	cmp r0, 0
-	beq _081C6F84
-	adds r0, r4, 0
-	movs r1, 0
-	bl StartSpriteAffineAnim
-	ldr r0, =SpriteCallbackDummy
-	str r0, [r4, 0x1C]
-_081C6F84:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81C6F68
-
-	thumb_func_start ShowItemImage
-ShowItemImage: @ 81C6F90
-	push {r4-r6,lr}
-	lsls r0, 16
-	lsrs r6, r0, 16
-	lsls r1, 24
-	lsrs r4, r1, 24
-	ldr r0, =gUnknown_0203CF2C
-	ldr r2, =0x00000805
-	adds r1, r4, r2
-	ldr r0, [r0]
-	adds r5, r0, r1
-	ldrb r0, [r5]
-	cmp r0, 0xFF
-	bne _081C6FE0
-	ldr r0, =0x00001025
-	adds r4, r0
-	adds r0, r4, 0
-	bl FreeSpriteTilesByTag
-	adds r0, r4, 0
-	bl FreeSpritePaletteByTag
-	adds r0, r4, 0
-	adds r1, r4, 0
-	adds r2, r6, 0
-	bl AddItemIconSprite
-	lsls r0, 24
-	lsrs r2, r0, 24
-	cmp r2, 0x40
-	beq _081C6FE0
-	strb r2, [r5]
-	ldr r1, =gSprites
-	lsls r0, r2, 4
-	adds r0, r2
-	lsls r0, 2
-	adds r0, r1
-	movs r1, 0x18
-	strh r1, [r0, 0x24]
-	movs r1, 0x58
-	strh r1, [r0, 0x26]
-_081C6FE0:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end ShowItemImage
-
-	thumb_func_start sub_81C6FF8
-sub_81C6FF8: @ 81C6FF8
-	push {lr}
-	lsls r0, 24
-	movs r1, 0x80
-	lsls r1, 17
-	adds r0, r1
-	lsrs r0, 24
-	bl sub_81C6E38
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81C6FF8
-
-	thumb_func_start sub_81C700C
-sub_81C700C: @ 81C700C
-	push {lr}
-	ldr r0, =gUnknown_0203CF2C
-	ldr r0, [r0]
-	ldr r1, =0x00000807
-	adds r0, r1
-	movs r1, 0x8
-	bl sub_8122344
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81C700C
-
-	thumb_func_start sub_81C7028
-sub_81C7028: @ 81C7028
-	push {lr}
-	adds r2, r0, 0
-	lsls r2, 24
-	lsrs r2, 24
-	ldr r0, =gUnknown_0203CF2C
-	ldr r0, [r0]
-	ldr r1, =0x00000807
-	adds r0, r1
-	movs r1, 0x8
-	bl sub_81223FC
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81C7028
-
-	thumb_func_start sub_81C704C
-sub_81C704C: @ 81C704C
-	push {lr}
-	adds r3, r0, 0
-	lsls r3, 24
-	ldr r0, =gUnknown_0203CF2C
-	ldr r0, [r0]
-	ldr r1, =0x00000807
-	adds r0, r1
-	lsrs r3, 4
-	movs r1, 0x80
-	lsls r1, 13
-	adds r3, r1
-	lsrs r3, 16
-	movs r1, 0x88
-	movs r2, 0x78
-	bl sub_8122448
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81C704C
-
-	thumb_func_start sub_81C7078
-sub_81C7078: @ 81C7078
-	push {r4,r5,lr}
-	adds r5, r0, 0
-	adds r4, r1, 0
-	bl is_c1_link_related_active
-	cmp r0, 0
-	bne _081C7090
-	ldr r0, =sub_81C7170
-	b _081C7092
-	.pool
-_081C7090:
-	ldr r0, =sub_81C71E4
-_081C7092:
-	lsls r1, r4, 24
-	lsrs r1, 24
-	bl CreateTask
-	lsls r0, 24
-	lsrs r4, r0, 24
-	adds r0, r4, 0
-	movs r1, 0x1
-	adds r2, r5, 0
-	bl SetWordTaskArg
-	ldr r1, =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r0, r1
-	ldr r2, =gUnknown_0203CF3C
-	ldrb r1, [r2]
-	strh r1, [r0, 0xE]
-	ldrb r0, [r2]
-	adds r1, r0, 0x1
-	strb r1, [r2]
-	lsls r0, 24
-	lsrs r0, 8
-	orrs r0, r4
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end sub_81C7078
-
-	thumb_func_start sub_81C70D8
-sub_81C70D8: @ 81C70D8
-	push {lr}
-	ldr r1, =0x0000ffff
-	ands r1, r0
-	lsrs r3, r0, 16
-	ldr r2, =gTasks
-	lsls r0, r1, 2
-	adds r0, r1
-	lsls r0, 3
-	adds r1, r0, r2
-	ldrb r0, [r1, 0x4]
-	cmp r0, 0
-	beq _081C711C
-	ldr r2, [r1]
-	ldr r0, =sub_81C7170
-	cmp r2, r0
-	beq _081C70FE
-	ldr r0, =sub_81C71E4
-	cmp r2, r0
-	bne _081C711C
-_081C70FE:
-	movs r2, 0xE
-	ldrsh r0, [r1, r2]
-	cmp r0, r3
-	bne _081C711C
-	movs r0, 0x1
-	b _081C711E
-	.pool
-_081C711C:
-	movs r0, 0
-_081C711E:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_81C70D8
-
-	thumb_func_start sub_81C7124
-sub_81C7124: @ 81C7124
-	push {r4-r6,lr}
-	adds r6, r0, 0
-	movs r5, 0
-	ldr r4, =gTasks
-_081C712C:
-	ldrb r0, [r4, 0x4]
-	cmp r0, 0
-	beq _081C7160
-	ldr r1, [r4]
-	ldr r0, =sub_81C7170
-	cmp r1, r0
-	beq _081C7140
-	ldr r0, =sub_81C71E4
-	cmp r1, r0
-	bne _081C7160
-_081C7140:
-	lsls r0, r5, 24
-	lsrs r0, 24
-	movs r1, 0x1
-	bl GetWordTaskArg
-	cmp r0, r6
-	bne _081C7160
-	movs r0, 0x1
-	b _081C716A
-	.pool
-_081C7160:
-	adds r4, 0x28
-	adds r5, 0x1
-	cmp r5, 0xF
-	ble _081C712C
-	movs r0, 0
-_081C716A:
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_81C7124
-
-	thumb_func_start sub_81C7170
-sub_81C7170: @ 81C7170
-	push {r4-r7,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	adds r0, r5, 0
-	movs r1, 0x1
-	bl GetWordTaskArg
-	adds r6, r0, 0
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	ldr r1, =gTasks + 0x8
-	adds r4, r0, r1
-	movs r7, 0
-_081C718C:
-	movs r1, 0
-	ldrsh r0, [r4, r1]
-	bl _call_via_r6
-	cmp r0, 0x4
-	bhi _081C71D6
-	lsls r0, 2
-	ldr r1, =_081C71AC
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.pool
-	.align 2, 0
-_081C71AC:
-	.4byte _081C71C6
-	.4byte _081C71C0
-	.4byte _081C71DE
-	.4byte _081C71DA
-	.4byte _081C71CE
-_081C71C0:
-	ldrh r0, [r4]
-	adds r0, 0x1
-	b _081C71D8
-_081C71C6:
-	ldrh r0, [r4]
-	adds r0, 0x1
-	strh r0, [r4]
-	b _081C71DE
-_081C71CE:
-	adds r0, r5, 0
-	bl DestroyTask
-	b _081C71DE
-_081C71D6:
-	subs r0, 0x5
-_081C71D8:
-	strh r0, [r4]
-_081C71DA:
-	cmp r7, 0
-	beq _081C718C
-_081C71DE:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81C7170
-
-	thumb_func_start sub_81C71E4
-sub_81C71E4: @ 81C71E4
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	bl sub_8087598
-	cmp r0, 0
-	bne _081C724A
-	adds r0, r5, 0
-	movs r1, 0x1
-	bl GetWordTaskArg
-	adds r2, r0, 0
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	ldr r1, =gTasks + 0x8
-	adds r4, r0, r1
-	movs r1, 0
-	ldrsh r0, [r4, r1]
-	bl _call_via_r2
-	cmp r0, 0x4
-	bhi _081C7246
-	lsls r0, 2
-	ldr r1, =_081C7224
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.pool
-	.align 2, 0
-_081C7224:
-	.4byte _081C7238
-	.4byte _081C7238
-	.4byte _081C724A
-	.4byte _081C724A
-	.4byte _081C723E
-_081C7238:
-	ldrh r0, [r4]
-	adds r0, 0x1
-	b _081C7248
-_081C723E:
-	adds r0, r5, 0
-	bl DestroyTask
-	b _081C724A
-_081C7246:
-	subs r0, 0x5
-_081C7248:
-	strh r0, [r4]
-_081C724A:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81C71E4
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/asm/party_menu.s b/asm/party_menu.s
index 92c4905a4..2d1faadab 100644
--- a/asm/party_menu.s
+++ b/asm/party_menu.s
@@ -11626,7 +11626,7 @@ c2_815ABFC: @ 81B6254
 	bl GoToBagMenu
 	b _081B6276
 _081B626C:
-	ldr r0, =gUnknown_0203CF30
+	ldr r0, =gPyramidBagCursorData
 	ldr r1, [r0]
 	movs r0, 0x4
 	bl sub_81C4F98
diff --git a/asm/pokenav.s b/asm/pokenav.s
index 8adb3cbd9..b8165ec80 100644
--- a/asm/pokenav.s
+++ b/asm/pokenav.s
@@ -4,6 +4,239 @@
 	.syntax unified
 
 	.text
+	
+
+
+	thumb_func_start sub_81C7078
+sub_81C7078: @ 81C7078
+	push {r4,r5,lr}
+	adds r5, r0, 0
+	adds r4, r1, 0
+	bl is_c1_link_related_active
+	cmp r0, 0
+	bne _081C7090
+	ldr r0, =sub_81C7170
+	b _081C7092
+	.pool
+_081C7090:
+	ldr r0, =sub_81C71E4
+_081C7092:
+	lsls r1, r4, 24
+	lsrs r1, 24
+	bl CreateTask
+	lsls r0, 24
+	lsrs r4, r0, 24
+	adds r0, r4, 0
+	movs r1, 0x1
+	adds r2, r5, 0
+	bl SetWordTaskArg
+	ldr r1, =gTasks
+	lsls r0, r4, 2
+	adds r0, r4
+	lsls r0, 3
+	adds r0, r1
+	ldr r2, =gUnknown_0203CF3C
+	ldrb r1, [r2]
+	strh r1, [r0, 0xE]
+	ldrb r0, [r2]
+	adds r1, r0, 0x1
+	strb r1, [r2]
+	lsls r0, 24
+	lsrs r0, 8
+	orrs r0, r4
+	pop {r4,r5}
+	pop {r1}
+	bx r1
+	.pool
+	thumb_func_end sub_81C7078
+
+	thumb_func_start sub_81C70D8
+sub_81C70D8: @ 81C70D8
+	push {lr}
+	ldr r1, =0x0000ffff
+	ands r1, r0
+	lsrs r3, r0, 16
+	ldr r2, =gTasks
+	lsls r0, r1, 2
+	adds r0, r1
+	lsls r0, 3
+	adds r1, r0, r2
+	ldrb r0, [r1, 0x4]
+	cmp r0, 0
+	beq _081C711C
+	ldr r2, [r1]
+	ldr r0, =sub_81C7170
+	cmp r2, r0
+	beq _081C70FE
+	ldr r0, =sub_81C71E4
+	cmp r2, r0
+	bne _081C711C
+_081C70FE:
+	movs r2, 0xE
+	ldrsh r0, [r1, r2]
+	cmp r0, r3
+	bne _081C711C
+	movs r0, 0x1
+	b _081C711E
+	.pool
+_081C711C:
+	movs r0, 0
+_081C711E:
+	pop {r1}
+	bx r1
+	thumb_func_end sub_81C70D8
+
+	thumb_func_start sub_81C7124
+sub_81C7124: @ 81C7124
+	push {r4-r6,lr}
+	adds r6, r0, 0
+	movs r5, 0
+	ldr r4, =gTasks
+_081C712C:
+	ldrb r0, [r4, 0x4]
+	cmp r0, 0
+	beq _081C7160
+	ldr r1, [r4]
+	ldr r0, =sub_81C7170
+	cmp r1, r0
+	beq _081C7140
+	ldr r0, =sub_81C71E4
+	cmp r1, r0
+	bne _081C7160
+_081C7140:
+	lsls r0, r5, 24
+	lsrs r0, 24
+	movs r1, 0x1
+	bl GetWordTaskArg
+	cmp r0, r6
+	bne _081C7160
+	movs r0, 0x1
+	b _081C716A
+	.pool
+_081C7160:
+	adds r4, 0x28
+	adds r5, 0x1
+	cmp r5, 0xF
+	ble _081C712C
+	movs r0, 0
+_081C716A:
+	pop {r4-r6}
+	pop {r1}
+	bx r1
+	thumb_func_end sub_81C7124
+
+	thumb_func_start sub_81C7170
+sub_81C7170: @ 81C7170
+	push {r4-r7,lr}
+	lsls r0, 24
+	lsrs r5, r0, 24
+	adds r0, r5, 0
+	movs r1, 0x1
+	bl GetWordTaskArg
+	adds r6, r0, 0
+	lsls r0, r5, 2
+	adds r0, r5
+	lsls r0, 3
+	ldr r1, =gTasks + 0x8
+	adds r4, r0, r1
+	movs r7, 0
+_081C718C:
+	movs r1, 0
+	ldrsh r0, [r4, r1]
+	bl _call_via_r6
+	cmp r0, 0x4
+	bhi _081C71D6
+	lsls r0, 2
+	ldr r1, =_081C71AC
+	adds r0, r1
+	ldr r0, [r0]
+	mov pc, r0
+	.pool
+	.align 2, 0
+_081C71AC:
+	.4byte _081C71C6
+	.4byte _081C71C0
+	.4byte _081C71DE
+	.4byte _081C71DA
+	.4byte _081C71CE
+_081C71C0:
+	ldrh r0, [r4]
+	adds r0, 0x1
+	b _081C71D8
+_081C71C6:
+	ldrh r0, [r4]
+	adds r0, 0x1
+	strh r0, [r4]
+	b _081C71DE
+_081C71CE:
+	adds r0, r5, 0
+	bl DestroyTask
+	b _081C71DE
+_081C71D6:
+	subs r0, 0x5
+_081C71D8:
+	strh r0, [r4]
+_081C71DA:
+	cmp r7, 0
+	beq _081C718C
+_081C71DE:
+	pop {r4-r7}
+	pop {r0}
+	bx r0
+	thumb_func_end sub_81C7170
+
+	thumb_func_start sub_81C71E4
+sub_81C71E4: @ 81C71E4
+	push {r4,r5,lr}
+	lsls r0, 24
+	lsrs r5, r0, 24
+	bl sub_8087598
+	cmp r0, 0
+	bne _081C724A
+	adds r0, r5, 0
+	movs r1, 0x1
+	bl GetWordTaskArg
+	adds r2, r0, 0
+	lsls r0, r5, 2
+	adds r0, r5
+	lsls r0, 3
+	ldr r1, =gTasks + 0x8
+	adds r4, r0, r1
+	movs r1, 0
+	ldrsh r0, [r4, r1]
+	bl _call_via_r2
+	cmp r0, 0x4
+	bhi _081C7246
+	lsls r0, 2
+	ldr r1, =_081C7224
+	adds r0, r1
+	ldr r0, [r0]
+	mov pc, r0
+	.pool
+	.align 2, 0
+_081C7224:
+	.4byte _081C7238
+	.4byte _081C7238
+	.4byte _081C724A
+	.4byte _081C724A
+	.4byte _081C723E
+_081C7238:
+	ldrh r0, [r4]
+	adds r0, 0x1
+	b _081C7248
+_081C723E:
+	adds r0, r5, 0
+	bl DestroyTask
+	b _081C724A
+_081C7246:
+	subs r0, 0x5
+_081C7248:
+	strh r0, [r4]
+_081C724A:
+	pop {r4,r5}
+	pop {r0}
+	bx r0
+	thumb_func_end sub_81C71E4
 
 	thumb_func_start CB2_PokeNav
 CB2_PokeNav: @ 81C7250
diff --git a/data/battle_pyramid_bag.s b/data/battle_pyramid_bag.s
index 7327fb1f8..de459075f 100644
--- a/data/battle_pyramid_bag.s
+++ b/data/battle_pyramid_bag.s
@@ -3,60 +3,6 @@
 
 	.section .rodata
 
-	.align 2
-gUnknown_0861F2B4:: @ 861F2B4
-	.4byte 0x000011f0, 0x000001e1, 0x000021de
-
-	.align 2
-gUnknown_0861F2C0:: @ 861F2C0
-	.4byte 0x00000000, sub_81C5460, sub_81C5518, 0x00000000, 0x00080000, 0x07003021
-
-	.align 2
-gUnknown_0861F2D8:: @ 861F2D8
-	.4byte gMenuText_Use, sub_81C61E0
-	.4byte gMenuText_Toss, sub_81C62C4
-	.4byte gMenuText_Give, sub_81C6648
-	.4byte gText_Cancel2, sub_81C6258
-	.4byte gMenuText_Use, sub_81C679C
-	.4byte gText_EmptyString2, NULL
-
-gUnknown_0861F308:: @ 861F308
-	.byte 0x00, 0x02, 0x01, 0x03
-
-gUnknown_0861F30C:: @ 861F30C
-	.byte 0x01, 0x03
-
-gUnknown_0861F30E:: @ 861F30E
-	.byte 0x04, 0x03
-
-gUnknown_0861F310:: @ 861F310
-	.byte 0x03, 0x00, 0x00, 0x00
-
-gUnknown_0861F314:: @ 861F314
-	.4byte sub_81C654C
-	.4byte sub_81C63D0
-
-gUnknown_0861F31C:: @ 861F31C
-	.byte 0x00, 0x02, 0x03, 0x00, 0x03, 0x01, 0x01, 0x02, 0x03, 0x00, 0x00, 0x00
-
-	.align 2
-gUnknown_0861F328:: @ 861F328
-	window_template 0x00, 0x0e, 0x02, 0x0f, 0x10, 0x0f, 0x001e
-	window_template 0x00, 0x00, 0x0d, 0x0e, 0x06, 0x0f, 0x010e
-	window_template 0x01, 0x02, 0x0f, 0x1b, 0x04, 0x0f, 0x0162
-	window_template 0x01, 0x18, 0x11, 0x05, 0x02, 0x0f, 0x01ce
-	null_window_template
-
-	.align 2
-gUnknown_0861F350:: @ 861F350
-	window_template 0x01, 0x16, 0x11, 0x07, 0x02, 0x0f, 0x01d8
-	window_template 0x01, 0x16, 0x0f, 0x07, 0x04, 0x0f, 0x01d8
-	window_template 0x01, 0x0f, 0x0f, 0x0e, 0x04, 0x0f, 0x01d8
-	window_template 0x01, 0x0f, 0x0d, 0x0e, 0x06, 0x0f, 0x01d8
-
-	.align 2
-gUnknown_0861F370:: @ 861F370
-	window_template 0x01, 0x18, 0x0f, 0x05, 0x04, 0x0f, 0x01d8
 
 	.align 2
 gOamData_861F378:: @ 861F378
diff --git a/include/battle_pyramid_bag.h b/include/battle_pyramid_bag.h
new file mode 100644
index 000000000..5d5d8ccfa
--- /dev/null
+++ b/include/battle_pyramid_bag.h
@@ -0,0 +1,49 @@
+#ifndef GUARD_BATTLE_PYRAMID_BAG_H
+#define GUARD_BATTLE_PYRAMID_BAG_H
+
+#include "list_menu.h"
+
+struct PyramidBagResources
+{
+    void (*callback2)(void);
+    u8 tilemapBuffer[0x800];
+    u8 itemsSpriteIds[PYRAMID_BAG_ITEMS_COUNT + 1];
+    u8 windowIds[5];
+    u8 unk814;
+    u8 unk815;
+    u8 scrollArrowSpriteId;
+    const u8 *menuActionIds;
+    u8 filler81C[0x820 - 0x81C];
+    u8 menuActionsCount;
+    u8 listMenuCount;
+    u8 listMenuMaxShown;
+    struct ListMenuItem bagListItems[PYRAMID_BAG_ITEMS_COUNT + 1];
+    u8 itemStrings[PYRAMID_BAG_ITEMS_COUNT + 1][ITEM_NAME_LENGTH + 10];
+    s16 state;
+    u8 filler986[0x98C - 0x986];
+};
+
+struct PyramidBagCursorData
+{
+    void (*callback)(void);
+    u8 unk4;
+    u16 cursorPosition;
+    u16 scrollPosition;
+};
+
+extern struct PyramidBagResources *gPyramidBagResources;
+extern struct PyramidBagCursorData gPyramidBagCursorData;
+
+void CB2_PyramidBagMenuFromStartMenu(void);
+void sub_81C4F84(void);
+void sub_81C5924(void);
+void sub_81C59BC(void);
+void sub_81C4EFC(void);
+void sub_81C4F98(u8 a0, void (*callback)(void));
+void sub_81C6714(u8 taskId);
+void sub_81C6A94(void);
+void sub_81C4F24(void);
+void sub_81C5B14(u8 taskId);
+void DisplayItemMessageInBattlePyramid(u8 taskId, const u8 *str, void (*callback)(u8 taskId));
+
+#endif // GUARD_BATTLE_PYRAMID_BAG_H
diff --git a/include/item_use.h b/include/item_use.h
index 8f0ce272b..37343f6e7 100644
--- a/include/item_use.h
+++ b/include/item_use.h
@@ -51,6 +51,5 @@ void ItemUseInBattle_EnigmaBerry(u8);
 void ItemUseOutOfBattle_CannotUse(u8);
 u8 CheckIfItemIsTMHMOrEvolutionStone(u16 itemId);
 void sub_80FDD10(u8);
-void DisplayItemMessageInBattlePyramid(u8 taskId, const u8* str, void(*callback)(u8 taskId));
 
 #endif // GUARD_ITEM_USE_H
diff --git a/include/save.h b/include/save.h
index 7b271129a..9859870b4 100644
--- a/include/save.h
+++ b/include/save.h
@@ -32,7 +32,7 @@ struct SaveSectionOffsets
 };
 
 // Emerald changes this definition to be the sectors per slot.
-#define NUM_SECTORS_PER_SLOT 16 // move to save.h
+#define NUM_SECTORS_PER_SLOT 16
 
 #define UNKNOWN_CHECK_VALUE 0x8012025
 
diff --git a/ld_script.txt b/ld_script.txt
index a4219faf3..668cf7c5a 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -267,7 +267,6 @@ SECTIONS {
         src/pokemon_summary_screen.o(.text);
         src/unk_pokedex_area_screen_helper.o(.text);
         src/battle_pyramid_bag.o(.text);
-        asm/battle_pyramid_bag.o(.text);
         asm/pokenav.o(.text);
         src/match_call.o(.text);
         asm/pokenav.o(.text.after.match.call);
@@ -545,6 +544,7 @@ SECTIONS {
         src/berry_fix_program.o(.rodata);
         src/pokemon_summary_screen.o(.rodata);
         src/unk_pokedex_area_screen_helper.o(.rodata);
+        src/battle_pyramid_bag.o(.rodata);
         data/battle_pyramid_bag.o(.rodata);
         data/pokenav.o(.rodata);
         src/match_call.o(.rodata);
diff --git a/src/battle_pyramid_bag.c b/src/battle_pyramid_bag.c
index 721dfca98..9cb35074b 100644
--- a/src/battle_pyramid_bag.c
+++ b/src/battle_pyramid_bag.c
@@ -1,4 +1,5 @@
 #include "global.h"
+#include "battle_pyramid_bag.h"
 #include "main.h"
 #include "battle_controllers.h"
 #include "bg.h"
@@ -28,122 +29,202 @@
 #include "event_data.h"
 #include "text_window.h"
 #include "international_string_util.h"
+#include "item_icon.h"
 #include "constants/items.h"
 #include "constants/rgb.h"
 #include "constants/songs.h"
 
-EWRAM_DATA struct
-{
-    MainCallback callback2;
-    u8 tilemapBuffer[0x800];
-    u8 itemsSpriteIds[PYRAMID_BAG_ITEMS_COUNT + 1];
-    u8 windowIds[5];
-    u8 unk814;
-    u8 unk815;
-    u8 unk816;
-    const u8 *menuActionIds;
-    u8 filler81C;
-    u8 filler81D;
-    u8 filler81E;
-    u8 filler81F;
-    u8 menuActionsCount;
-    u8 listMenuCount;
-    u8 listMenuMaxShown;
-    struct ListMenuItem bagListItems[PYRAMID_BAG_ITEMS_COUNT + 1];
-    u8 itemStrings[PYRAMID_BAG_ITEMS_COUNT + 1][ITEM_NAME_LENGTH + 10];
-    s16 unk984;
-    u8 filler986[0x98C - 0x986];
-} *gUnknown_0203CF2C = NULL;
-
-EWRAM_DATA struct
-{
-    void (*callback)(void);
-    u8 unk4;
-    u16 unk6;
-    u16 unk8;
-} gUnknown_0203CF30 = {0};
-
-extern const struct BgTemplate gUnknown_0861F2B4[3];
-extern const struct WindowTemplate gUnknown_0861F328[];
-extern const struct WindowTemplate gUnknown_0861F350[];
-extern const struct CompressedSpriteSheet gUnknown_0861F3CC;
-extern const struct ListMenuTemplate gUnknown_0861F2C0;
-extern const u8 gUnknown_0861F310[1];
-extern const u8 gUnknown_0861F308[4];
-extern const u8 gUnknown_0861F30E[2];
-extern const u8 gUnknown_0861F30C[2];
-extern const struct MenuAction gUnknown_0861F2D8[];
-extern const struct YesNoFuncTable gUnknown_0861F314;
+EWRAM_DATA struct PyramidBagResources *gPyramidBagResources = NULL;
+EWRAM_DATA struct PyramidBagCursorData gPyramidBagCursorData = {0};
+
+// gfx
+extern const u8 gUnknown_08D9ADD0[];
+extern const u8 gUnknown_08D9AE04[];
+extern const u8 gUnknown_08D9AF44[];
 extern const u16 gUnknown_0860F074[];
-extern const u8 gUnknown_0861F31C[][3];
 
 // This file's functions.
-void sub_81C4F98(u8 a0, void (*callback)(void));
-void sub_81C4F44(u8 taskId);
-void Task_HandlePyramidBagInput(u8 taskId);
-void sub_81C5B4C(u8 taskId);
-void sub_81C67CC(u8 taskId);
-void sub_81C5D20(u8 taskId);
-void sub_81C674C(u8 taskId);
-void sub_81C5FE4(u8 taskId);
-void sub_81C5F68(u8 taskId);
-void sub_81C6714(u8 taskId);
-void sub_81C66EC(u8 taskId);
-void sub_81C629C(u8 taskId);
-void sub_81C6350(u8 taskId);
-void sub_81C64B4(u8 taskId);
-void sub_81C65CC(u8 taskId);
-void sub_81C66AC(u8 taskId);
-void sub_81C6964(u8 taskId);
-void sub_81C68B0(u8 taskId);
-void sub_81C6A14(u8 taskId);
-void sub_81C504C(void);
-bool8 sub_81C5078(void);
-void sub_81C51DC(void);
-bool8 sub_81C5238(void);
-void SetBagItemsListTemplate(void);
-void sub_81C5674(void);
-void sub_81C56F8(void);
-void sub_81C5924(void);
-void sub_81C59BC(void);
-void sub_81C5A20(void);
-void sub_81C6BD8(void);
-void sub_81C6EF4(void);
-void sub_81C700C(void);
-void sub_81C6E98(void);
-void sub_81C6F20(void);
-void sub_81C6404(void);
-void sub_81C6E1C(void);
-void ShowItemImage(u16 itemId, u8 tagIdAdder);
-void PyramidBag_CopyItemName(u8 *dst, u16 itemId);
-void sub_81C6FF8(u8 arg0);
-void PrintItemDescription(s32 listMenuId);
-void sub_81C5AB8(u8 y, u8 arg1);
-void PrintOnWindow_Font1(u8 windowId, const u8 *src, u8 x, u8 y, u8 letterSpacing, u8 lineSpacing, u8 speed, u8 colorTableId);
-void PrintOnWindow_Font7(u8 windowId, const u8 *src, u8 x, u8 y, u8 letterSpacing, u8 lineSpacing, u8 speed, u8 colorTableId);
-u8 sub_81C6D24(u8 windowArrayId);
-void sub_81C6D6C(u8 windowArrayId);
-void sub_81C5EAC(u8 windowId);
-void sub_81C5F08(u8 windowId, u8 horizontalCount, u8 verticalCount);
-bool8 sub_81C616C(s8 arg0);
-void sub_81C6DAC(u8 taskId, const struct YesNoFuncTable *yesNoTable);
-void sub_81C6CEC(u8 windowId);
-void sub_81C704C(u8 arg0);
-void sub_81C7028(u8 arg0);
+static void Task_HandlePyramidBagInput(u8 taskId);
+static void sub_81C4F44(u8 taskId);
+static void sub_81C5B4C(u8 taskId);
+static void Task_BeginItemSwap(u8 taskId);
+static void sub_81C5D20(u8 taskId);
+static void sub_81C674C(u8 taskId);
+static void HandleMenuActionInput(u8 taskId);
+static void HandleFewMenuActionsInput(u8 taskId);
+static void sub_81C66EC(u8 taskId);
+static void SetTaskToMainPyramidBagInputHandler(u8 taskId);
+static void sub_81C6350(u8 taskId);
+static void sub_81C64B4(u8 taskId);
+static void sub_81C65CC(u8 taskId);
+static void sub_81C66AC(u8 taskId);
+static void PerformItemSwap(u8 taskId);
+static void Task_ItemSwapHandleInput(u8 taskId);
+static void sub_81C6A14(u8 taskId);
+static void SetBagItemsListTemplate(void);
+static void sub_81C504C(void);
+static void sub_81C51DC(void);
+static void AddScrollArrow(void);
+static void sub_81C56F8(void);
+static void sub_81C5A20(void);
+static void sub_81C6BD8(void);
+static void sub_81C6EF4(void);
+static void sub_81C700C(void);
+static void sub_81C6E98(void);
+static void sub_81C6F20(void);
+static void sub_81C6404(void);
+static void sub_81C6E1C(void);
+static bool8 sub_81C5238(void);
+static bool8 sub_81C5078(void);
+static void ShowItemImage(u16 itemId, u8 itemSpriteArrayId);
+static void PyramidBag_CopyItemName(u8 *dst, u16 itemId);
+static void sub_81C6FF8(u8 arg0);
+static void PrintItemDescription(s32 listMenuId);
+static void sub_81C5AB8(u8 y, u8 arg1);
+static void PrintOnWindow_Font1(u8 windowId, const u8 *src, u8 x, u8 y, u8 letterSpacing, u8 lineSpacing, u8 speed, u8 colorTableId);
+static void PrintOnWindow_Font7(u8 windowId, const u8 *src, u8 x, u8 y, u8 letterSpacing, u8 lineSpacing, u8 speed, u8 colorTableId);
+static u8 sub_81C6D24(u8 windowArrayId);
+static void sub_81C6D6C(u8 windowArrayId);
+static void sub_81C5EAC(u8 windowId);
+static void sub_81C5F08(u8 windowId, u8 horizontalCount, u8 verticalCount);
+static bool8 IsAValidMenuAction(s8 arg0);
+static void sub_81C6DAC(u8 taskId, const struct YesNoFuncTable *yesNoTable);
+static void sub_81C6CEC(u8 windowId);
+static void sub_81C704C(u8 y);
+static void sub_81C7028(bool8 invisible);
+static void sub_81C6F68(struct Sprite *sprite);
+static void BagAction_UseOnField(u8 taskId);
+static void BagAction_Toss(u8 taskId);
+static void BagAction_Give(u8 taskId);
+static void BagAction_Cancel(u8 taskId);
+static void BagAction_UseInBattle(u8 taskId);
+static void PyramidBagMoveCursorFunc(s32 itemIndex, bool8 onInit, struct ListMenu *list);
+static void PrintItemQuantity(u8 windowId, s32 itemIndex, u8 y);
+static void TossItem(u8 taskId);
+static void DontTossItem(u8 taskId);
+
+// Const rom data.
+static const struct BgTemplate gUnknown_0861F2B4[] =
+{
+    {
+        .bg = 0,
+        .charBaseIndex = 0,
+        .mapBaseIndex = 31,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 1,
+        .baseTile = 0
+    },
+    {
+        .bg = 1,
+        .charBaseIndex = 0,
+        .mapBaseIndex = 30,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 0,
+        .baseTile = 0
+    },
+    {
+        .bg = 2,
+        .charBaseIndex = 3,
+        .mapBaseIndex = 29,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 2,
+        .baseTile = 0
+    },
+};
+
+static const struct ListMenuTemplate gUnknown_0861F2C0 =
+{
+    .items = NULL,
+    .moveCursorFunc = PyramidBagMoveCursorFunc,
+    .itemPrintFunc = PrintItemQuantity,
+    .totalItems = 0,
+    .maxShowed = 0,
+    .windowId = 0,
+    .header_X = 0,
+    .item_X = 8,
+    .cursor_X = 0,
+    .upText_Y = 1,
+    .cursorPal = 2,
+    .fillValue = 0,
+    .cursorShadowPal = 3,
+    .lettersSpacing = 0,
+    .itemVerticalPadding = 0,
+    .scrollMultiple = LIST_NO_MULTIPLE_SCROLL,
+    .fontId = 7,
+    .cursorKind = 0
+};
+
+#define ACTION_USE_FIELD 0
+#define ACTION_TOSS 1
+#define ACTION_GIVE 2
+#define ACTION_CANCEL 3
+#define ACTION_USE_BATTLE 4
+#define ACTION_DUMMY 5
+
+static const struct MenuAction sMenuActions[] =
+{
+    [ACTION_USE_FIELD] =    { gMenuText_Use, BagAction_UseOnField },
+    [ACTION_TOSS] =         { gMenuText_Toss, BagAction_Toss },
+    [ACTION_GIVE] =         { gMenuText_Give, BagAction_Give },
+    [ACTION_CANCEL] =       { gText_Cancel2, BagAction_Cancel },
+    [ACTION_USE_BATTLE] =   { gMenuText_Use, BagAction_UseInBattle },
+    [ACTION_DUMMY] =        { gText_EmptyString2, NULL },
+};
+
+static const u8 sFieldMenuActionIds[] = {ACTION_USE_FIELD, ACTION_GIVE, ACTION_TOSS, ACTION_CANCEL};
+static const u8 gUnknown_0861F30C[] = {ACTION_TOSS, ACTION_CANCEL};
+static const u8 sBattleMenuActionIds[] = {ACTION_USE_BATTLE, ACTION_CANCEL};
+static const u8 gUnknown_0861F310[] = {ACTION_CANCEL};
+
+static const struct YesNoFuncTable sYesNoTossFuncions =
+{
+    TossItem, DontTossItem
+};
+
+static const u8 sColorTable[][3] =
+{
+    {0, 2, 3},
+    {0, 3, 1},
+    {1, 2, 3},
+};
+
+static const struct WindowTemplate gUnknown_0861F328[] =
+{
+    {0x00, 0x0e, 0x02, 0x0f, 0x10, 0x0f, 0x001e},
+    {0x00, 0x00, 0x0d, 0x0e, 0x06, 0x0f, 0x010e},
+    {0x01, 0x02, 0x0f, 0x1b, 0x04, 0x0f, 0x0162},
+    {0x01, 0x18, 0x11, 0x05, 0x02, 0x0f, 0x01ce},
+    DUMMY_WIN_TEMPLATE,
+};
+
+static const struct WindowTemplate gUnknown_0861F350[] =
+{
+    {0x01, 0x16, 0x11, 0x07, 0x02, 0x0f, 0x01d8},
+    {0x01, 0x16, 0x0f, 0x07, 0x04, 0x0f, 0x01d8},
+    {0x01, 0x0f, 0x0f, 0x0e, 0x04, 0x0f, 0x01d8},
+    {0x01, 0x0f, 0x0d, 0x0e, 0x06, 0x0f, 0x01d8},
+    {0x01, 0x18, 0x0f, 0x05, 0x04, 0x0f, 0x01d8},
+};
+
+extern const struct CompressedSpriteSheet gUnknown_0861F3CC;
+extern const struct SpriteTemplate gUnknown_0861F3D4;
 
 // code
 void sub_81C4EEC(void)
 {
-    gUnknown_0203CF30.unk6 = 0;
-    gUnknown_0203CF30.unk8 = 0;
+    gPyramidBagCursorData.cursorPosition = 0;
+    gPyramidBagCursorData.scrollPosition = 0;
 }
 
-void sub_81C4EFC(void)
+void CB2_PyramidBagMenuFromStartMenu(void)
 {
     sub_81C4F98(0, CB2_ReturnToFieldWithOpenMenu);
 }
 
-void sub_81C4F10(void)
+static void sub_81C4F10(void)
 {
     sub_81C4F98(1, SetCB2ToReshowScreenAfterMenu2);
 }
@@ -155,7 +236,7 @@ void sub_81C4F24(void)
     CreateTask(sub_81C4F44, 10);
 }
 
-void sub_81C4F44(u8 taskId)
+static void sub_81C4F44(u8 taskId)
 {
     if (!gPaletteFade.active)
     {
@@ -168,30 +249,30 @@ void sub_81C4F44(u8 taskId)
 
 void sub_81C4F84(void)
 {
-    sub_81C4F98(4, gUnknown_0203CF30.callback);
+    sub_81C4F98(4, gPyramidBagCursorData.callback);
 }
 
 void sub_81C4F98(u8 a0, void (*callback)(void))
 {
-    gUnknown_0203CF2C = AllocZeroed(sizeof(*gUnknown_0203CF2C));
+    gPyramidBagResources = AllocZeroed(sizeof(*gPyramidBagResources));
 
     if (a0 != 4)
-        gUnknown_0203CF30.unk4 = a0;
+        gPyramidBagCursorData.unk4 = a0;
 
     if (callback != NULL)
-        gUnknown_0203CF30.callback = callback;
+        gPyramidBagCursorData.callback = callback;
 
-    gUnknown_0203CF2C->callback2 = NULL;
-    gUnknown_0203CF2C->unk814 = 0xFF;
-    gUnknown_0203CF2C->unk816 = 0xFF;
+    gPyramidBagResources->callback2 = NULL;
+    gPyramidBagResources->unk814 = 0xFF;
+    gPyramidBagResources->scrollArrowSpriteId = 0xFF;
 
-    memset(gUnknown_0203CF2C->itemsSpriteIds, 0xFF, sizeof(gUnknown_0203CF2C->itemsSpriteIds));
-    memset(gUnknown_0203CF2C->windowIds, 0xFF, sizeof(gUnknown_0203CF2C->windowIds));
+    memset(gPyramidBagResources->itemsSpriteIds, 0xFF, sizeof(gPyramidBagResources->itemsSpriteIds));
+    memset(gPyramidBagResources->windowIds, 0xFF, sizeof(gPyramidBagResources->windowIds));
 
     SetMainCallback2(sub_81C504C);
 }
 
-void sub_81C501C(void)
+static void sub_81C501C(void)
 {
     RunTasks();
     AnimateSprites();
@@ -200,19 +281,19 @@ void sub_81C501C(void)
     UpdatePaletteFade();
 }
 
-void sub_81C5038(void)
+static void sub_81C5038(void)
 {
     LoadOam();
     ProcessSpriteCopyRequests();
     TransferPlttBuffer();
 }
 
-void sub_81C504C(void)
+static void sub_81C504C(void)
 {
     while (sub_81221EC() != TRUE && sub_81C5078() != TRUE && sub_81221AC() != TRUE);
 }
 
-bool8 sub_81C5078(void)
+static bool8 sub_81C5078(void)
 {
     switch (gMain.state)
     {
@@ -247,7 +328,7 @@ bool8 sub_81C5078(void)
             break;
         case 6:
             sub_81C51DC();
-            gUnknown_0203CF2C->unk984 = 0;
+            gPyramidBagResources->state = 0;
             gMain.state++;
             break;
         case 7:
@@ -279,7 +360,7 @@ bool8 sub_81C5078(void)
             gMain.state++;
             break;
         case 13:
-            sub_81C5674();
+            AddScrollArrow();
             gMain.state++;
             break;
         case 14:
@@ -303,12 +384,12 @@ bool8 sub_81C5078(void)
     return FALSE;
 }
 
-void sub_81C51DC(void)
+static void sub_81C51DC(void)
 {
     ResetVramOamAndBgCntRegs();
     ResetBgsAndClearDma3BusyFlags(0);
     InitBgsFromTemplates(0, gUnknown_0861F2B4, ARRAY_COUNT(gUnknown_0861F2B4));
-    SetBgTilemapBuffer(2, gUnknown_0203CF2C->tilemapBuffer);
+    SetBgTilemapBuffer(2, gPyramidBagResources->tilemapBuffer);
     ResetAllBgsCoordinates();
     schedule_bg_copy_tilemap_to_vram(2);
     SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_0 |
@@ -320,67 +401,64 @@ void sub_81C51DC(void)
     SetGpuReg(REG_OFFSET_BLDCNT, 0);
 }
 
-extern const u8 gUnknown_08D9AE04[];
-extern const u8 gUnknown_08D9AF44[];
-
-bool8 sub_81C5238(void)
+static bool8 sub_81C5238(void)
 {
-    switch (gUnknown_0203CF2C->unk984)
+    switch (gPyramidBagResources->state)
     {
     case 0:
         reset_temp_tile_data_buffers();
         decompress_and_copy_tile_data_to_vram(2, gBagScreen_Gfx, 0, 0, 0);
-        gUnknown_0203CF2C->unk984++;
+        gPyramidBagResources->state++;
         break;
     case 1:
         if (free_temp_tile_data_buffers_if_possible() != TRUE)
         {
-            LZDecompressWram(gUnknown_08D9AE04, gUnknown_0203CF2C->tilemapBuffer);
-            gUnknown_0203CF2C->unk984++;
+            LZDecompressWram(gUnknown_08D9AE04, gPyramidBagResources->tilemapBuffer);
+            gPyramidBagResources->state++;
         }
         break;
     case 2:
         LoadCompressedPalette(gUnknown_08D9AF44, 0, 0x20);
-        gUnknown_0203CF2C->unk984++;
+        gPyramidBagResources->state++;
         break;
     case 3:
         LoadCompressedObjectPic(&gUnknown_0861F3CC);
-        gUnknown_0203CF2C->unk984++;
+        gPyramidBagResources->state++;
         break;
     case 4:
         sub_81C6E98();
-        gUnknown_0203CF2C->unk984++;
+        gPyramidBagResources->state++;
         break;
     default:
         LoadListMenuArrowsGfx();
-        gUnknown_0203CF2C->unk984 = 0;
+        gPyramidBagResources->state = 0;
         return TRUE;
     }
 
     return FALSE;
 }
 
-void SetBagItemsListTemplate(void)
+static void SetBagItemsListTemplate(void)
 {
     u16 i;
     u16 *pyramidItems = gSaveBlock2Ptr->frontier.pyramidBag.itemId[gSaveBlock2Ptr->frontier.lvlMode];
 
-    for (i = 0; i < gUnknown_0203CF2C->listMenuCount - 1; i++)
+    for (i = 0; i < gPyramidBagResources->listMenuCount - 1; i++)
     {
-        PyramidBag_CopyItemName(gUnknown_0203CF2C->itemStrings[i], pyramidItems[i]);
-        gUnknown_0203CF2C->bagListItems[i].name = gUnknown_0203CF2C->itemStrings[i];
-        gUnknown_0203CF2C->bagListItems[i].id = i;
+        PyramidBag_CopyItemName(gPyramidBagResources->itemStrings[i], pyramidItems[i]);
+        gPyramidBagResources->bagListItems[i].name = gPyramidBagResources->itemStrings[i];
+        gPyramidBagResources->bagListItems[i].id = i;
     }
-    StringCopy(gUnknown_0203CF2C->itemStrings[i], gText_CloseBag);
-    gUnknown_0203CF2C->bagListItems[i].name = gUnknown_0203CF2C->itemStrings[i];
-    gUnknown_0203CF2C->bagListItems[i].id = LIST_B_PRESSED;
+    StringCopy(gPyramidBagResources->itemStrings[i], gText_CloseBag);
+    gPyramidBagResources->bagListItems[i].name = gPyramidBagResources->itemStrings[i];
+    gPyramidBagResources->bagListItems[i].id = LIST_B_PRESSED;
     gMultiuseListMenuTemplate = gUnknown_0861F2C0;
-    gMultiuseListMenuTemplate.totalItems = gUnknown_0203CF2C->listMenuCount;
-    gMultiuseListMenuTemplate.items = gUnknown_0203CF2C->bagListItems;
-    gMultiuseListMenuTemplate.maxShowed = gUnknown_0203CF2C->listMenuMaxShown;
+    gMultiuseListMenuTemplate.totalItems = gPyramidBagResources->listMenuCount;
+    gMultiuseListMenuTemplate.items = gPyramidBagResources->bagListItems;
+    gMultiuseListMenuTemplate.maxShowed = gPyramidBagResources->listMenuMaxShown;
 }
 
-void PyramidBag_CopyItemName(u8 *dst, u16 itemId)
+static void PyramidBag_CopyItemName(u8 *dst, u16 itemId)
 {
     if (ItemId_GetPocket(itemId) == POCKET_BERRIES)
     {
@@ -394,34 +472,34 @@ void PyramidBag_CopyItemName(u8 *dst, u16 itemId)
     }
 }
 
-void PyramidBagMoveCursorFunc(s32 itemIndex, bool8 onInit, struct ListMenu *list)
+static void PyramidBagMoveCursorFunc(s32 itemIndex, bool8 onInit, struct ListMenu *list)
 {
     if (onInit != TRUE)
     {
         PlaySE(SE_SELECT);
         sub_81C6F20();
     }
-    if (gUnknown_0203CF2C->unk814 == 0xFF)
+    if (gPyramidBagResources->unk814 == 0xFF)
     {
-        sub_81C6FF8(gUnknown_0203CF2C->unk815 ^ 1);
+        sub_81C6FF8(gPyramidBagResources->unk815 ^ 1);
         if (itemIndex != LIST_B_PRESSED)
-            ShowItemImage(gSaveBlock2Ptr->frontier.pyramidBag.itemId[gSaveBlock2Ptr->frontier.lvlMode][itemIndex], gUnknown_0203CF2C->unk815);
+            ShowItemImage(gSaveBlock2Ptr->frontier.pyramidBag.itemId[gSaveBlock2Ptr->frontier.lvlMode][itemIndex], gPyramidBagResources->unk815);
         else
-            ShowItemImage(0xFFFF, gUnknown_0203CF2C->unk815);
-        gUnknown_0203CF2C->unk815 ^= 1;
+            ShowItemImage(0xFFFF, gPyramidBagResources->unk815);
+        gPyramidBagResources->unk815 ^= 1;
         PrintItemDescription(itemIndex);
     }
 }
 
-void PrintItemQuantity(u8 windowId, s32 itemIndex, u8 y)
+static void PrintItemQuantity(u8 windowId, s32 itemIndex, u8 y)
 {
     s32 xAlign;
     if (itemIndex == LIST_B_PRESSED)
         return;
 
-    if (gUnknown_0203CF2C->unk814 != 0xFF)
+    if (gPyramidBagResources->unk814 != 0xFF)
     {
-        if (gUnknown_0203CF2C->unk814 == (u8)(itemIndex))
+        if (gPyramidBagResources->unk814 == (u8)(itemIndex))
             sub_81C5AB8(y, 1);
         else
             sub_81C5AB8(y, 0xFF);
@@ -435,7 +513,7 @@ void PrintItemQuantity(u8 windowId, s32 itemIndex, u8 y)
     PrintOnWindow_Font7(windowId, gStringVar4, xAlign, y, 0, 0, TEXT_SPEED_FF, 0);
 }
 
-void PrintItemDescription(s32 listMenuId)
+static void PrintItemDescription(s32 listMenuId)
 {
     const u8 *desc;
     if (listMenuId != LIST_B_PRESSED)
@@ -444,7 +522,7 @@ void PrintItemDescription(s32 listMenuId)
     }
     else
     {
-        StringCopy(gStringVar1, gReturnToXStringsTable2[gUnknown_0203CF30.unk4]);
+        StringCopy(gStringVar1, gReturnToXStringsTable2[gPyramidBagCursorData.unk4]);
         StringExpandPlaceholders(gStringVar4, gText_ReturnToVar1);
         desc = gStringVar4;
     }
@@ -452,29 +530,29 @@ void PrintItemDescription(s32 listMenuId)
     PrintOnWindow_Font1(1, desc, 3, 0, 0, 1, 0, 0);
 }
 
-void sub_81C5674(void)
+static void AddScrollArrow(void)
 {
-    if (gUnknown_0203CF2C->unk816 == 0xFF)
-        gUnknown_0203CF2C->unk816 = AddScrollIndicatorArrowPairParameterized(2, 172, 12, 148, gUnknown_0203CF2C->listMenuCount - gUnknown_0203CF2C->listMenuMaxShown, 0xB5E, 0xB5E, &gUnknown_0203CF30.unk8);
+    if (gPyramidBagResources->scrollArrowSpriteId == 0xFF)
+        gPyramidBagResources->scrollArrowSpriteId = AddScrollIndicatorArrowPairParameterized(2, 172, 12, 148, gPyramidBagResources->listMenuCount - gPyramidBagResources->listMenuMaxShown, 0xB5E, 0xB5E, &gPyramidBagCursorData.scrollPosition);
 }
 
-void sub_81C56CC(void)
+static void RemoveScrollArrow(void)
 {
-    if (gUnknown_0203CF2C->unk816 != 0xFF)
+    if (gPyramidBagResources->scrollArrowSpriteId != 0xFF)
     {
-        RemoveScrollIndicatorArrowPair(gUnknown_0203CF2C->unk816);
-        gUnknown_0203CF2C->unk816 = 0xFF;
+        RemoveScrollIndicatorArrowPair(gPyramidBagResources->scrollArrowSpriteId);
+        gPyramidBagResources->scrollArrowSpriteId = 0xFF;
     }
 }
 
-void sub_81C56F8(void)
+static void sub_81C56F8(void)
 {
     u8 taskId = CreateTask(Task_HandlePyramidBagInput, 0);
     s16 *data = gTasks[taskId].data;
-    data[0] = ListMenuInit(&gMultiuseListMenuTemplate, gUnknown_0203CF30.unk8, gUnknown_0203CF30.unk6);
+    data[0] = ListMenuInit(&gMultiuseListMenuTemplate, gPyramidBagCursorData.scrollPosition, gPyramidBagCursorData.cursorPosition);
 }
 
-void SwapItems(u8 id1, u8 id2)
+static void SwapItems(u8 id1, u8 id2)
 {
     u16 temp;
     u16 *itemIds = gSaveBlock2Ptr->frontier.pyramidBag.itemId[gSaveBlock2Ptr->frontier.lvlMode];
@@ -484,7 +562,7 @@ void SwapItems(u8 id1, u8 id2)
     SWAP(quantities[id1], quantities[id2], temp);
 }
 
-void MovePyramidBagItemSlotInList(u8 from, u8 to)
+static void MovePyramidBagItemSlotInList(u8 from, u8 to)
 {
     u16 *itemIds = gSaveBlock2Ptr->frontier.pyramidBag.itemId[gSaveBlock2Ptr->frontier.lvlMode];
     u8 *quantities = gSaveBlock2Ptr->frontier.pyramidBag.quantity[gSaveBlock2Ptr->frontier.lvlMode];
@@ -517,7 +595,7 @@ void MovePyramidBagItemSlotInList(u8 from, u8 to)
     }
 }
 
-void CompactItems(void)
+static void CompactItems(void)
 {
     u8 i, j;
     u16 *itemIds = gSaveBlock2Ptr->frontier.pyramidBag.itemId[gSaveBlock2Ptr->frontier.lvlMode];
@@ -547,58 +625,58 @@ void sub_81C5924(void)
     u16 *itemIds = gSaveBlock2Ptr->frontier.pyramidBag.itemId[gSaveBlock2Ptr->frontier.lvlMode];
 
     CompactItems();
-    gUnknown_0203CF2C->listMenuCount = 0;
+    gPyramidBagResources->listMenuCount = 0;
     for (i = 0; i < PYRAMID_BAG_ITEMS_COUNT; i++)
     {
         if (itemIds[i] != 0)
-            gUnknown_0203CF2C->listMenuCount++;
+            gPyramidBagResources->listMenuCount++;
     }
-    gUnknown_0203CF2C->listMenuCount++;
-    if (gUnknown_0203CF2C->listMenuCount > 8)
-        gUnknown_0203CF2C->listMenuMaxShown = 8;
+    gPyramidBagResources->listMenuCount++;
+    if (gPyramidBagResources->listMenuCount > 8)
+        gPyramidBagResources->listMenuMaxShown = 8;
     else
-        gUnknown_0203CF2C->listMenuMaxShown = gUnknown_0203CF2C->listMenuCount;
+        gPyramidBagResources->listMenuMaxShown = gPyramidBagResources->listMenuCount;
 }
 
 void sub_81C59BC(void)
 {
-    if (gUnknown_0203CF30.unk8 != 0 && gUnknown_0203CF30.unk8 + gUnknown_0203CF2C->listMenuMaxShown > gUnknown_0203CF2C->listMenuCount)
-        gUnknown_0203CF30.unk8 = gUnknown_0203CF2C->listMenuCount - gUnknown_0203CF2C->listMenuMaxShown;
-    if (gUnknown_0203CF30.unk8 + gUnknown_0203CF30.unk6 >= gUnknown_0203CF2C->listMenuCount)
+    if (gPyramidBagCursorData.scrollPosition != 0 && gPyramidBagCursorData.scrollPosition + gPyramidBagResources->listMenuMaxShown > gPyramidBagResources->listMenuCount)
+        gPyramidBagCursorData.scrollPosition = gPyramidBagResources->listMenuCount - gPyramidBagResources->listMenuMaxShown;
+    if (gPyramidBagCursorData.scrollPosition + gPyramidBagCursorData.cursorPosition >= gPyramidBagResources->listMenuCount)
     {
-        if (gUnknown_0203CF2C->listMenuCount == 0)
-            gUnknown_0203CF30.unk6 = 0;
+        if (gPyramidBagResources->listMenuCount == 0)
+            gPyramidBagCursorData.cursorPosition = 0;
         else
-            gUnknown_0203CF30.unk6 = gUnknown_0203CF2C->listMenuCount - 1;
+            gPyramidBagCursorData.cursorPosition = gPyramidBagResources->listMenuCount - 1;
     }
 }
 
-void sub_81C5A20(void)
+static void sub_81C5A20(void)
 {
     u8 i;
 
-    if (gUnknown_0203CF30.unk6 > 4)
+    if (gPyramidBagCursorData.cursorPosition > 4)
     {
-        for (i = 0; i <= gUnknown_0203CF30.unk6 - 4; i++)
+        for (i = 0; i <= gPyramidBagCursorData.cursorPosition - 4; i++)
         {
-            if (gUnknown_0203CF30.unk8 + gUnknown_0203CF2C->listMenuMaxShown == gUnknown_0203CF2C->listMenuCount)
+            if (gPyramidBagCursorData.scrollPosition + gPyramidBagResources->listMenuMaxShown == gPyramidBagResources->listMenuCount)
             {
                 // daycare.c sends its regards.
                 break;
             }
-            gUnknown_0203CF30.unk6--;
-            gUnknown_0203CF30.unk8++;
+            gPyramidBagCursorData.cursorPosition--;
+            gPyramidBagCursorData.scrollPosition++;
         }
     }
 }
 
-void sub_81C5A98(u8 listMenuTaskId, u8 arg1)
+static void sub_81C5A98(u8 listMenuTaskId, u8 arg1)
 {
     u8 y = ListMenuGetYCoordForPrintingArrowCursor(listMenuTaskId);
     sub_81C5AB8(y, arg1);
 }
 
-void sub_81C5AB8(u8 y, u8 arg1)
+static void sub_81C5AB8(u8 y, u8 arg1)
 {
     if (arg1 == 0xFF)
         FillWindowPixelRect(0, 0, 0, y, GetMenuCursorDimensionByFont(1, 0), GetMenuCursorDimensionByFont(1, 1));
@@ -612,46 +690,46 @@ void sub_81C5B14(u8 taskId)
     gTasks[taskId].func = sub_81C5B4C;
 }
 
-void sub_81C5B4C(u8 taskId)
+static void sub_81C5B4C(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
     if (!gPaletteFade.active)
     {
-        DestroyListMenuTask(data[0], &gUnknown_0203CF30.unk8, &gUnknown_0203CF30.unk6);
-        if (gUnknown_0203CF2C->callback2 != NULL)
-            SetMainCallback2(gUnknown_0203CF2C->callback2);
+        DestroyListMenuTask(data[0], &gPyramidBagCursorData.scrollPosition, &gPyramidBagCursorData.cursorPosition);
+        if (gPyramidBagResources->callback2 != NULL)
+            SetMainCallback2(gPyramidBagResources->callback2);
         else
-            SetMainCallback2(gUnknown_0203CF30.callback);
-        sub_81C56CC();
+            SetMainCallback2(gPyramidBagCursorData.callback);
+        RemoveScrollArrow();
         ResetSpriteData();
         FreeAllSpritePalettes();
         FreeAllWindowBuffers();
-        Free(gUnknown_0203CF2C);
+        Free(gPyramidBagResources);
         DestroyTask(taskId);
     }
 }
 
-void Task_HandlePyramidBagInput(u8 taskId)
+static void Task_HandlePyramidBagInput(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
     if (sub_81221EC() != TRUE && !gPaletteFade.active)
     {
         if (gMain.newKeys & SELECT_BUTTON)
         {
-            if (gUnknown_0203CF30.unk4 != 2)
+            if (gPyramidBagCursorData.unk4 != 2)
             {
-                ListMenuGetScrollAndRow(data[0], &gUnknown_0203CF30.unk8, &gUnknown_0203CF30.unk6);
-                if (gUnknown_0203CF30.unk8 + gUnknown_0203CF30.unk6 != gUnknown_0203CF2C->listMenuCount - 1)
+                ListMenuGetScrollAndRow(data[0], &gPyramidBagCursorData.scrollPosition, &gPyramidBagCursorData.cursorPosition);
+                if (gPyramidBagCursorData.scrollPosition + gPyramidBagCursorData.cursorPosition != gPyramidBagResources->listMenuCount - 1)
                 {
                     PlaySE(SE_SELECT);
-                    sub_81C67CC(taskId);
+                    Task_BeginItemSwap(taskId);
                 }
             }
         }
         else
         {
             s32 listId = ListMenuHandleInputGetItemId(data[0]);
-            ListMenuGetScrollAndRow(data[0], &gUnknown_0203CF30.unk8, &gUnknown_0203CF30.unk6);
+            ListMenuGetScrollAndRow(data[0], &gPyramidBagCursorData.scrollPosition, &gPyramidBagCursorData.cursorPosition);
             switch (listId)
             {
             case LIST_NOTHING_CHOSEN:
@@ -666,7 +744,7 @@ void Task_HandlePyramidBagInput(u8 taskId)
                 gSpecialVar_ItemId = gSaveBlock2Ptr->frontier.pyramidBag.itemId[gSaveBlock2Ptr->frontier.lvlMode][listId];
                 data[1] = listId;
                 data[2] = gSaveBlock2Ptr->frontier.pyramidBag.quantity[gSaveBlock2Ptr->frontier.lvlMode][listId];
-                if (gUnknown_0203CF30.unk4 == 2)
+                if (gPyramidBagCursorData.unk4 == 2)
                     sub_81C674C(taskId);
                 else
                     sub_81C5D20(taskId);
@@ -676,33 +754,33 @@ void Task_HandlePyramidBagInput(u8 taskId)
     }
 }
 
-void sub_81C5D20(u8 taskId)
+static void sub_81C5D20(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
 
-    sub_81C56CC();
+    RemoveScrollArrow();
     sub_81C5A98(data[0], 1);
-    switch (gUnknown_0203CF30.unk4)
+    switch (gPyramidBagCursorData.unk4)
     {
     default:
-        gUnknown_0203CF2C->menuActionIds = gUnknown_0861F308;
-        gUnknown_0203CF2C->menuActionsCount = ARRAY_COUNT(gUnknown_0861F308);
+        gPyramidBagResources->menuActionIds = sFieldMenuActionIds;
+        gPyramidBagResources->menuActionsCount = ARRAY_COUNT(sFieldMenuActionIds);
         break;
     case 1:
         if (ItemId_GetBattleUsage(gSpecialVar_ItemId))
         {
-            gUnknown_0203CF2C->menuActionIds = gUnknown_0861F30E;
-            gUnknown_0203CF2C->menuActionsCount = ARRAY_COUNT(gUnknown_0861F30E);
+            gPyramidBagResources->menuActionIds = sBattleMenuActionIds;
+            gPyramidBagResources->menuActionsCount = ARRAY_COUNT(sBattleMenuActionIds);
         }
         else
         {
-            gUnknown_0203CF2C->menuActionIds = gUnknown_0861F310;
-            gUnknown_0203CF2C->menuActionsCount = ARRAY_COUNT(gUnknown_0861F310);
+            gPyramidBagResources->menuActionIds = gUnknown_0861F310;
+            gPyramidBagResources->menuActionsCount = ARRAY_COUNT(gUnknown_0861F310);
         }
         break;
     case 3:
-        gUnknown_0203CF2C->menuActionIds = gUnknown_0861F30C;
-        gUnknown_0203CF2C->menuActionsCount = ARRAY_COUNT(gUnknown_0861F30C);
+        gPyramidBagResources->menuActionIds = gUnknown_0861F30C;
+        gPyramidBagResources->menuActionsCount = ARRAY_COUNT(gUnknown_0861F30C);
         break;
     }
 
@@ -710,32 +788,32 @@ void sub_81C5D20(u8 taskId)
     StringExpandPlaceholders(gStringVar4, gText_Var1IsSelected);
     FillWindowPixelBuffer(1, 0);
     PrintOnWindow_Font1(1, gStringVar4, 3, 0, 0, 1, 0, 0);
-    if (gUnknown_0203CF2C->menuActionsCount == 1)
+    if (gPyramidBagResources->menuActionsCount == 1)
         sub_81C5EAC(sub_81C6D24(0));
-    else if (gUnknown_0203CF2C->menuActionsCount == 2)
+    else if (gPyramidBagResources->menuActionsCount == 2)
         sub_81C5EAC(sub_81C6D24(1));
     else
         sub_81C5F08(sub_81C6D24(2), 2, 2);
 
-    if (gUnknown_0203CF2C->menuActionsCount == 4)
-        gTasks[taskId].func = sub_81C5FE4;
+    if (gPyramidBagResources->menuActionsCount == 4)
+        gTasks[taskId].func = HandleMenuActionInput;
     else
-        gTasks[taskId].func = sub_81C5F68;
+        gTasks[taskId].func = HandleFewMenuActionsInput;
 }
 
-void sub_81C5EAC(u8 windowId)
+static void sub_81C5EAC(u8 windowId)
 {
-    AddItemMenuActionTextPrinters(windowId, 7, 8, 1, 0, 0x10, gUnknown_0203CF2C->menuActionsCount, gUnknown_0861F2D8, gUnknown_0203CF2C->menuActionIds);
-    InitMenuInUpperLeftCornerPlaySoundWhenAPressed(windowId, gUnknown_0203CF2C->menuActionsCount, 0);
+    AddItemMenuActionTextPrinters(windowId, 7, 8, 1, 0, 0x10, gPyramidBagResources->menuActionsCount, sMenuActions, gPyramidBagResources->menuActionIds);
+    InitMenuInUpperLeftCornerPlaySoundWhenAPressed(windowId, gPyramidBagResources->menuActionsCount, 0);
 }
 
-void sub_81C5F08(u8 windowId, u8 horizontalCount, u8 verticalCount)
+static void sub_81C5F08(u8 windowId, u8 horizontalCount, u8 verticalCount)
 {
-    sub_8198DBC(windowId, 7, 8, 1, 0x38, horizontalCount, verticalCount, gUnknown_0861F2D8, gUnknown_0203CF2C->menuActionIds);
+    sub_8198DBC(windowId, 7, 8, 1, 0x38, horizontalCount, verticalCount, sMenuActions, gPyramidBagResources->menuActionIds);
     sub_8199944(windowId, 0x38, horizontalCount, verticalCount, 0);
 }
 
-void sub_81C5F68(u8 taskId)
+static void HandleFewMenuActionsInput(u8 taskId)
 {
     if (sub_81221EC() != TRUE)
     {
@@ -746,25 +824,25 @@ void sub_81C5F68(u8 taskId)
             break;
         case -1:
             PlaySE(SE_SELECT);
-            gUnknown_0861F2D8[3].func.void_u8(taskId);
+            sMenuActions[ACTION_CANCEL].func.void_u8(taskId);
             break;
         default:
             PlaySE(SE_SELECT);
-            if (gUnknown_0861F2D8[gUnknown_0203CF2C->menuActionIds[id]].func.void_u8 != NULL)
-                gUnknown_0861F2D8[gUnknown_0203CF2C->menuActionIds[id]].func.void_u8(taskId);
+            if (sMenuActions[gPyramidBagResources->menuActionIds[id]].func.void_u8 != NULL)
+                sMenuActions[gPyramidBagResources->menuActionIds[id]].func.void_u8(taskId);
             break;
         }
     }
 }
 
-void sub_81C5FE4(u8 taskId)
+static void HandleMenuActionInput(u8 taskId)
 {
     if (sub_81221EC() != TRUE)
     {
         s8 id = GetMenuCursorPos();
         if (gMain.newKeys & DPAD_UP)
         {
-            if (id > 0 && sub_81C616C(id - 2))
+            if (id > 0 && IsAValidMenuAction(id - 2))
             {
                 PlaySE(SE_SELECT);
                 sub_8199134(0, -1);
@@ -772,7 +850,7 @@ void sub_81C5FE4(u8 taskId)
         }
         else if (gMain.newKeys & DPAD_DOWN)
         {
-            if (id < gUnknown_0203CF2C->menuActionsCount - 2 && sub_81C616C(id + 2))
+            if (id < gPyramidBagResources->menuActionsCount - 2 && IsAValidMenuAction(id + 2))
             {
                 PlaySE(SE_SELECT);
                 sub_8199134(0, 1);
@@ -780,7 +858,7 @@ void sub_81C5FE4(u8 taskId)
         }
         else if (gMain.newKeys & DPAD_LEFT || GetLRKeysState() == 1)
         {
-            if (id & 1 && sub_81C616C(id - 1))
+            if (id & 1 && IsAValidMenuAction(id - 1))
             {
                 PlaySE(SE_SELECT);
                 sub_8199134(-1, 0);
@@ -788,7 +866,7 @@ void sub_81C5FE4(u8 taskId)
         }
         else if (gMain.newKeys & DPAD_RIGHT || GetLRKeysState() == 2)
         {
-            if (!(id & 1) && sub_81C616C(id + 1))
+            if (!(id & 1) && IsAValidMenuAction(id + 1))
             {
                 PlaySE(SE_SELECT);
                 sub_8199134(1, 0);
@@ -797,40 +875,40 @@ void sub_81C5FE4(u8 taskId)
         else if (gMain.newKeys & A_BUTTON)
         {
             PlaySE(SE_SELECT);
-            if (gUnknown_0861F2D8[gUnknown_0203CF2C->menuActionIds[id]].func.void_u8 != NULL)
-                gUnknown_0861F2D8[gUnknown_0203CF2C->menuActionIds[id]].func.void_u8(taskId);
+            if (sMenuActions[gPyramidBagResources->menuActionIds[id]].func.void_u8 != NULL)
+                sMenuActions[gPyramidBagResources->menuActionIds[id]].func.void_u8(taskId);
         }
         else if (gMain.newKeys & B_BUTTON)
         {
             PlaySE(SE_SELECT);
-            gUnknown_0861F2D8[3].func.void_u8(taskId);
+            sMenuActions[ACTION_CANCEL].func.void_u8(taskId);
         }
     }
 }
 
-bool8 sub_81C616C(s8 arg0)
+static bool8 IsAValidMenuAction(s8 actionTableId)
 {
-    if (arg0 < 0)
+    if (actionTableId < 0)
         return FALSE;
-    else if (arg0 > gUnknown_0203CF2C->menuActionsCount)
+    else if (actionTableId > gPyramidBagResources->menuActionsCount)
         return FALSE;
-    else if (gUnknown_0203CF2C->menuActionIds[arg0] == 5)
+    else if (gPyramidBagResources->menuActionIds[actionTableId] == ACTION_DUMMY)
         return FALSE;
     else
         return TRUE;
 }
 
-void sub_81C61A8(void)
+static void sub_81C61A8(void)
 {
-    if (gUnknown_0203CF2C->menuActionsCount == 1)
+    if (gPyramidBagResources->menuActionsCount == 1)
         sub_81C6D6C(0);
-    else if (gUnknown_0203CF2C->menuActionsCount == 2)
+    else if (gPyramidBagResources->menuActionsCount == 2)
         sub_81C6D6C(1);
     else
         sub_81C6D6C(2);
 }
 
-void sub_81C61E0(u8 taskId)
+static void BagAction_UseOnField(u8 taskId)
 {
     u8 pocketId = ItemId_GetPocket(gSpecialVar_ItemId);
 
@@ -851,7 +929,7 @@ void sub_81C61E0(u8 taskId)
     }
 }
 
-void sub_81C6258(u8 taskId)
+static void BagAction_Cancel(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
 
@@ -860,16 +938,16 @@ void sub_81C6258(u8 taskId)
     schedule_bg_copy_tilemap_to_vram(0);
     schedule_bg_copy_tilemap_to_vram(1);
     sub_81C5A98(data[0], 0);
-    sub_81C629C(taskId);
+    SetTaskToMainPyramidBagInputHandler(taskId);
 }
 
-void sub_81C629C(u8 taskId)
+static void SetTaskToMainPyramidBagInputHandler(u8 taskId)
 {
-    sub_81C5674();
+    AddScrollArrow();
     gTasks[taskId].func = Task_HandlePyramidBagInput;
 }
 
-void sub_81C62C4(u8 taskId)
+static void BagAction_Toss(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
 
@@ -890,7 +968,7 @@ void sub_81C62C4(u8 taskId)
     }
 }
 
-void sub_81C6350(u8 taskId)
+static void sub_81C6350(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
 
@@ -899,19 +977,19 @@ void sub_81C6350(u8 taskId)
     StringExpandPlaceholders(gStringVar4, gText_ConfirmTossItems);
     FillWindowPixelBuffer(1, 0);
     PrintOnWindow_Font1(1, gStringVar4, 3, 0, 0, 1, 0, 0);
-    sub_81C6DAC(taskId, &gUnknown_0861F314);
+    sub_81C6DAC(taskId, &sYesNoTossFuncions);
 }
 
-void sub_81C63D0(u8 taskId)
+static void DontTossItem(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
 
     PrintItemDescription(data[1]);
     sub_81C5A98(data[0], 0);
-    sub_81C629C(taskId);
+    SetTaskToMainPyramidBagInputHandler(taskId);
 }
 
-void sub_81C6404(void)
+static void sub_81C6404(void)
 {
     s32 x;
 
@@ -922,7 +1000,7 @@ void sub_81C6404(void)
     PrintTextOnWindow(3, 1, gStringVar4, x, 2, 0, NULL);
 }
 
-void sub_81C645C(s16 value)
+static void sub_81C645C(s16 value)
 {
     s32 x;
 
@@ -932,7 +1010,7 @@ void sub_81C645C(s16 value)
     PrintTextOnWindow(3, 1, gStringVar4, x, 2, 0, NULL);
 }
 
-void sub_81C64B4(u8 taskId)
+static void sub_81C64B4(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
 
@@ -954,11 +1032,11 @@ void sub_81C64B4(u8 taskId)
         sub_8198070(3, 0);
         ClearWindowTilemap(3);
         schedule_bg_copy_tilemap_to_vram(1);
-        sub_81C63D0(taskId);
+        DontTossItem(taskId);
     }
 }
 
-void sub_81C654C(u8 taskId)
+static void TossItem(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
 
@@ -970,11 +1048,11 @@ void sub_81C654C(u8 taskId)
     gTasks[taskId].func = sub_81C65CC;
 }
 
-void sub_81C65CC(u8 taskId)
+static void sub_81C65CC(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
-    u16 *scrollOffset = &gUnknown_0203CF30.unk8;
-    u16 *selectedRow = &gUnknown_0203CF30.unk6;
+    u16 *scrollOffset = &gPyramidBagCursorData.scrollPosition;
+    u16 *selectedRow = &gPyramidBagCursorData.cursorPosition;
 
     if (gMain.newKeys & (A_BUTTON | B_BUTTON))
     {
@@ -986,11 +1064,11 @@ void sub_81C65CC(u8 taskId)
         SetBagItemsListTemplate();
         data[0] = ListMenuInit(&gMultiuseListMenuTemplate, *scrollOffset, *selectedRow);
         schedule_bg_copy_tilemap_to_vram(0);
-        sub_81C629C(taskId);
+        SetTaskToMainPyramidBagInputHandler(taskId);
     }
 }
 
-void sub_81C6648(u8 taskId)
+static void BagAction_Give(u8 taskId)
 {
     sub_81C61A8();
     if (ItemIsMail(gSpecialVar_ItemId) == TRUE)
@@ -999,7 +1077,7 @@ void sub_81C6648(u8 taskId)
     }
     else if (!ItemId_GetImportance(gSpecialVar_ItemId))
     {
-        gUnknown_0203CF2C->callback2 = sub_81B7F60;
+        gPyramidBagResources->callback2 = sub_81B7F60;
         sub_81C5B14(taskId);
     }
     else
@@ -1008,14 +1086,14 @@ void sub_81C6648(u8 taskId)
     }
 }
 
-void sub_81C66AC(u8 taskId)
+static void sub_81C66AC(u8 taskId)
 {
     CopyItemName(gSpecialVar_ItemId, gStringVar1);
     StringExpandPlaceholders(gStringVar4, gText_Var1CantBeHeld);
     DisplayItemMessageInBattlePyramid(taskId, gStringVar4, sub_81C66EC);
 }
 
-void sub_81C66EC(u8 taskId)
+static void sub_81C66EC(u8 taskId)
 {
     if (gMain.newKeys & A_BUTTON)
     {
@@ -1031,10 +1109,10 @@ void sub_81C6714(u8 taskId)
     sub_81C6E1C();
     PrintItemDescription(data[1]);
     sub_81C5A98(data[0], 0);
-    sub_81C629C(taskId);
+    SetTaskToMainPyramidBagInputHandler(taskId);
 }
 
-void sub_81C674C(u8 taskId)
+static void sub_81C674C(u8 taskId)
 {
     if (!itemid_80BF6D8_mail_related(gSpecialVar_ItemId))
         DisplayItemMessageInBattlePyramid(taskId, gText_CantWriteMail, sub_81C66EC);
@@ -1044,7 +1122,7 @@ void sub_81C674C(u8 taskId)
         sub_81C66AC(taskId);
 }
 
-void sub_81C679C(u8 taskId)
+static void BagAction_UseInBattle(u8 taskId)
 {
     if (ItemId_GetBattleFunc(gSpecialVar_ItemId) != NULL)
     {
@@ -1053,12 +1131,12 @@ void sub_81C679C(u8 taskId)
     }
 }
 
-void sub_81C67CC(u8 taskId)
+static void Task_BeginItemSwap(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
 
-    data[1] = gUnknown_0203CF30.unk8 + gUnknown_0203CF30.unk6;
-    gUnknown_0203CF2C->unk814 = data[1];
+    data[1] = gPyramidBagCursorData.scrollPosition + gPyramidBagCursorData.cursorPosition;
+    gPyramidBagResources->unk814 = data[1];
     ListMenuSetUnkIndicatorsStructField(data[0], 0x10, 1);
     CopyItemName(gSaveBlock2Ptr->frontier.pyramidBag.itemId[gSaveBlock2Ptr->frontier.lvlMode][data[1]], gStringVar1);
     StringExpandPlaceholders(gStringVar4, gText_MoveVar1Where);
@@ -1066,10 +1144,10 @@ void sub_81C67CC(u8 taskId)
     PrintOnWindow_Font1(1, gStringVar4, 3, 0, 0, 1, 0, 0);
     sub_81C5A98(data[0], 1);
     sub_81C704C(data[1]);
-    gTasks[taskId].func = sub_81C68B0;
+    gTasks[taskId].func = Task_ItemSwapHandleInput;
 }
 
-void sub_81C68B0(u8 taskId)
+static void Task_ItemSwapHandleInput(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
     if (sub_81221EC() != TRUE)
@@ -1077,15 +1155,15 @@ void sub_81C68B0(u8 taskId)
         if (gMain.newKeys & SELECT_BUTTON)
         {
             PlaySE(SE_SELECT);
-            ListMenuGetScrollAndRow(data[0], &gUnknown_0203CF30.unk8, &gUnknown_0203CF30.unk6);
-            sub_81C6964(taskId);
+            ListMenuGetScrollAndRow(data[0], &gPyramidBagCursorData.scrollPosition, &gPyramidBagCursorData.cursorPosition);
+            PerformItemSwap(taskId);
         }
         else
         {
             s32 id = ListMenuHandleInputGetItemId(data[0]);
-            ListMenuGetScrollAndRow(data[0], &gUnknown_0203CF30.unk8, &gUnknown_0203CF30.unk6);
-            sub_81C7028(0);
-            sub_81C704C(gUnknown_0203CF30.unk6);
+            ListMenuGetScrollAndRow(data[0], &gPyramidBagCursorData.scrollPosition, &gPyramidBagCursorData.cursorPosition);
+            sub_81C7028(FALSE);
+            sub_81C704C(gPyramidBagCursorData.cursorPosition);
             switch (id)
             {
             case LIST_NOTHING_CHOSEN:
@@ -1093,24 +1171,24 @@ void sub_81C68B0(u8 taskId)
             case LIST_B_PRESSED:
                 PlaySE(SE_SELECT);
                 if (gMain.newKeys & A_BUTTON)
-                    sub_81C6964(taskId);
+                    PerformItemSwap(taskId);
                 else
                     sub_81C6A14(taskId);
                 break;
             default:
                 PlaySE(SE_SELECT);
-                sub_81C6964(taskId);
+                PerformItemSwap(taskId);
                 break;
             }
         }
     }
 }
 
-void sub_81C6964(u8 taskId)
+static void PerformItemSwap(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
-    u16 *scrollOffset = &gUnknown_0203CF30.unk8;
-    u16 *selectedRow = &gUnknown_0203CF30.unk6;
+    u16 *scrollOffset = &gPyramidBagCursorData.scrollPosition;
+    u16 *selectedRow = &gPyramidBagCursorData.cursorPosition;
     u16 var = *scrollOffset + *selectedRow;
 
     if (data[1] == var || data[1] == var - 1)
@@ -1120,31 +1198,31 @@ void sub_81C6964(u8 taskId)
     else
     {
         MovePyramidBagItemSlotInList(data[1], var);
-        gUnknown_0203CF2C->unk814 = 0xFF;
-        sub_81C7028(1);
+        gPyramidBagResources->unk814 = 0xFF;
+        sub_81C7028(TRUE);
         DestroyListMenuTask(data[0], scrollOffset, selectedRow);
         if (data[1] < var)
-            gUnknown_0203CF30.unk6--;
+            gPyramidBagCursorData.cursorPosition--;
         SetBagItemsListTemplate();
         data[0] = ListMenuInit(&gMultiuseListMenuTemplate, *scrollOffset, *selectedRow);
-        sub_81C629C(taskId);
+        SetTaskToMainPyramidBagInputHandler(taskId);
     }
 }
 
-void sub_81C6A14(u8 taskId)
+static void sub_81C6A14(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
-    u16 *scrollOffset = &gUnknown_0203CF30.unk8;
-    u16 *selectedRow = &gUnknown_0203CF30.unk6;
+    u16 *scrollOffset = &gPyramidBagCursorData.scrollPosition;
+    u16 *selectedRow = &gPyramidBagCursorData.cursorPosition;
 
-    gUnknown_0203CF2C->unk814 = 0xFF;
-    sub_81C7028(1);
+    gPyramidBagResources->unk814 = 0xFF;
+    sub_81C7028(TRUE);
     DestroyListMenuTask(data[0], scrollOffset, selectedRow);
     if (data[1] < *scrollOffset + *selectedRow)
-        gUnknown_0203CF30.unk6--;
+        gPyramidBagCursorData.cursorPosition--;
     SetBagItemsListTemplate();
     data[0] = ListMenuInit(&gMultiuseListMenuTemplate, *scrollOffset, *selectedRow);
-    sub_81C629C(taskId);
+    SetTaskToMainPyramidBagInputHandler(taskId);
 }
 
 void sub_81C6A94(void)
@@ -1181,7 +1259,7 @@ void sub_81C6A94(void)
     Free(newQuantities);
 }
 
-void sub_81C6BD8(void)
+static void sub_81C6BD8(void)
 {
     u8 i;
 
@@ -1200,30 +1278,30 @@ void sub_81C6BD8(void)
     schedule_bg_copy_tilemap_to_vram(1);
 }
 
-void PrintOnWindow_Font1(u8 windowId, const u8 *src, u8 x, u8 y, u8 letterSpacing, u8 lineSpacing, u8 speed, u8 colorTableId)
+static void PrintOnWindow_Font1(u8 windowId, const u8 *src, u8 x, u8 y, u8 letterSpacing, u8 lineSpacing, u8 speed, u8 colorTableId)
 {
-    AddTextPrinterParameterized2(windowId, 1, x, y, letterSpacing, lineSpacing, gUnknown_0861F31C[colorTableId], speed, src);
+    AddTextPrinterParameterized2(windowId, 1, x, y, letterSpacing, lineSpacing, sColorTable[colorTableId], speed, src);
 }
 
-void PrintOnWindow_Font7(u8 windowId, const u8 *src, u8 x, u8 y, u8 letterSpacing, u8 lineSpacing, u8 speed, u8 colorTableId)
+static void PrintOnWindow_Font7(u8 windowId, const u8 *src, u8 x, u8 y, u8 letterSpacing, u8 lineSpacing, u8 speed, u8 colorTableId)
 {
-    AddTextPrinterParameterized2(windowId, 7, x, y, letterSpacing, lineSpacing, gUnknown_0861F31C[colorTableId], speed, src);
+    AddTextPrinterParameterized2(windowId, 7, x, y, letterSpacing, lineSpacing, sColorTable[colorTableId], speed, src);
 }
 
-void sub_81C6CEC(u8 windowId)
+static void sub_81C6CEC(u8 windowId)
 {
     SetWindowBorderStyle(windowId, 0, 1, 0xE);
     schedule_bg_copy_tilemap_to_vram(1);
 }
 
-u8 sub_81C6D08(u8 windowArrayId)
+static u8 sub_81C6D08(u8 windowArrayId)
 {
-    return gUnknown_0203CF2C->windowIds[windowArrayId];
+    return gPyramidBagResources->windowIds[windowArrayId];
 }
 
-u8 sub_81C6D24(u8 windowArrayId)
+static u8 sub_81C6D24(u8 windowArrayId)
 {
-    u8 *windowId = &gUnknown_0203CF2C->windowIds[windowArrayId];
+    u8 *windowId = &gPyramidBagResources->windowIds[windowArrayId];
     if (*windowId == 0xFF)
     {
         *windowId = AddWindow(&gUnknown_0861F350[windowArrayId]);
@@ -1233,9 +1311,9 @@ u8 sub_81C6D24(u8 windowArrayId)
     return *windowId;
 }
 
-void sub_81C6D6C(u8 windowArrayId)
+static void sub_81C6D6C(u8 windowArrayId)
 {
-    u8 *windowId = &gUnknown_0203CF2C->windowIds[windowArrayId];
+    u8 *windowId = &gPyramidBagResources->windowIds[windowArrayId];
     if (*windowId != 0xFF)
     {
         sub_8198070(*windowId, FALSE);
@@ -1245,3 +1323,112 @@ void sub_81C6D6C(u8 windowArrayId)
         *windowId = 0xFF;
     }
 }
+
+static void sub_81C6DAC(u8 taskId, const struct YesNoFuncTable *yesNoTable)
+{
+    CreateYesNoMenuWithCallbacks(taskId, &gUnknown_0861F350[4], 1, 0, 2, 1, 0xE, yesNoTable);
+}
+
+void DisplayItemMessageInBattlePyramid(u8 taskId, const u8 *str, void (*callback)(u8 taskId))
+{
+    FillWindowPixelBuffer(2, 0x11);
+    DisplayMessageAndContinueTask(taskId, 2, 0xA, 0xD, 1, GetPlayerTextSpeed(), str, callback);
+    schedule_bg_copy_tilemap_to_vram(1);
+}
+
+static void sub_81C6E1C(void)
+{
+    sub_8197DF8(2, FALSE);
+    ClearWindowTilemap(2);
+    schedule_bg_copy_tilemap_to_vram(1);
+}
+
+#define ITEM_IMAGE_TAG 0x1024
+
+static void sub_81C6E38(u8 itemSpriteArrayId)
+{
+    u8 *spriteId = &gPyramidBagResources->itemsSpriteIds[itemSpriteArrayId];
+    if (*spriteId != 0xFF)
+    {
+        FreeSpriteTilesByTag(ITEM_IMAGE_TAG + itemSpriteArrayId);
+        FreeSpritePaletteByTag(ITEM_IMAGE_TAG + itemSpriteArrayId);
+        FreeSpriteOamMatrix(&gSprites[*spriteId]);
+        DestroySprite(&gSprites[*spriteId]);
+        *spriteId = 0xFF;
+    }
+}
+
+static void sub_81C6E98(void)
+{
+    struct SpritePalette spritePalette;
+    u16 *palPtr = Alloc(0x40);
+
+    LZDecompressWram(gUnknown_08D9ADD0, palPtr);
+    spritePalette.data = palPtr + (gSaveBlock2Ptr->frontier.lvlMode * 16);
+    spritePalette.tag = ITEM_IMAGE_TAG;
+    LoadSpritePalette(&spritePalette);
+    Free(palPtr);
+}
+
+static void sub_81C6EF4(void)
+{
+    u8 *spriteId = &gPyramidBagResources->itemsSpriteIds[0];
+    *spriteId = CreateSprite(&gUnknown_0861F3D4, 0x44, 0x38, 0);
+}
+
+static void sub_81C6F20(void)
+{
+    struct Sprite *sprite = &gSprites[gPyramidBagResources->itemsSpriteIds[0]];
+    if (sprite->affineAnimEnded)
+    {
+        StartSpriteAffineAnim(sprite, 1);
+        sprite->callback = sub_81C6F68;
+    }
+}
+
+static void sub_81C6F68(struct Sprite *sprite)
+{
+    if (sprite->affineAnimEnded)
+    {
+        StartSpriteAffineAnim(sprite, 0);
+        sprite->callback = SpriteCallbackDummy;
+    }
+}
+
+static void ShowItemImage(u16 itemId, u8 itemSpriteArrayId)
+{
+    u8 itemSpriteId;
+    u8 *spriteId = &gPyramidBagResources->itemsSpriteIds[itemSpriteArrayId + 1];
+    if (*spriteId == 0xFF)
+    {
+        FreeSpriteTilesByTag(ITEM_IMAGE_TAG + 1 + itemSpriteArrayId);
+        FreeSpritePaletteByTag(ITEM_IMAGE_TAG + 1 + itemSpriteArrayId);
+        itemSpriteId = AddItemIconSprite(ITEM_IMAGE_TAG + 1 + itemSpriteArrayId, ITEM_IMAGE_TAG + 1 + itemSpriteArrayId, itemId);
+        if (itemSpriteId != MAX_SPRITES)
+        {
+            *spriteId = itemSpriteId;
+            gSprites[itemSpriteId].pos2.x = 24;
+            gSprites[itemSpriteId].pos2.y = 88;
+        }
+    }
+}
+
+static void sub_81C6FF8(u8 itemSpriteArrayId)
+{
+    sub_81C6E38(itemSpriteArrayId + 1);
+}
+
+static void sub_81C700C(void)
+{
+    sub_8122344(&gPyramidBagResources->itemsSpriteIds[3], 8);
+}
+
+static void sub_81C7028(bool8 invisible)
+{
+    sub_81223FC(&gPyramidBagResources->itemsSpriteIds[3], 8, invisible);
+}
+
+static void sub_81C704C(u8 y)
+{
+    sub_8122448(&gPyramidBagResources->itemsSpriteIds[3], 8 | 0x80, 120, (y + 1) * 16);
+}
diff --git a/src/item.c b/src/item.c
index 29c250989..3866d7316 100644
--- a/src/item.c
+++ b/src/item.c
@@ -10,6 +10,7 @@
 #include "item_menu.h"
 #include "strings.h"
 #include "load_save.h"
+#include "battle_pyramid_bag.h"
 
 extern bool8 InBattlePyramid(void);
 extern u16 gUnknown_0203CF30[];
@@ -965,7 +966,7 @@ bool8 RemovePyramidBagItem(u16 itemId, u16 count)
     u16 *items = gSaveBlock2Ptr->frontier.pyramidBag.itemId[gSaveBlock2Ptr->frontier.lvlMode];
     u8 *quantities = gSaveBlock2Ptr->frontier.pyramidBag.quantity[gSaveBlock2Ptr->frontier.lvlMode];
 
-    i = gUnknown_0203CF30[3] + gUnknown_0203CF30[4];
+    i = gPyramidBagCursorData.cursorPosition + gPyramidBagCursorData.scrollPosition;
     if (items[i] == itemId && quantities[i] >= count)
     {
         quantities[i] -= count;
diff --git a/src/item_use.c b/src/item_use.c
index 23c829391..bf7c2a386 100755
--- a/src/item_use.c
+++ b/src/item_use.c
@@ -33,8 +33,8 @@
 #include "pokeblock.h"
 #include "menu.h"
 #include "item_menu.h"
+#include "battle_pyramid_bag.h"
 
-extern void(**gUnknown_0203CF2C)(void);
 extern void(*gUnknown_0203A0F4)(u8 taskId);
 extern void(*gUnknown_085920D8[])(void);
 extern void (*gUnknown_03006328)(u8, u16, TaskFunc);
@@ -122,7 +122,7 @@ void SetUpItemUseCallback(u8 taskId)
     }
     else
     {
-        *gUnknown_0203CF2C = gUnknown_085920D8[type];
+        gPyramidBagResources->callback2 = gUnknown_085920D8[type];
         sub_81C5B14(taskId);
     }
 }
@@ -987,7 +987,7 @@ void sub_80FE54C(u8 taskId)
     }
     else
     {
-        *gUnknown_0203CF2C = sub_81B89F0;
+        gPyramidBagResources->callback2 = sub_81B89F0;
         sub_81C5B14(taskId);
     }
 }
diff --git a/src/start_menu.c b/src/start_menu.c
index 60271317a..4a58c146e 100644
--- a/src/start_menu.c
+++ b/src/start_menu.c
@@ -33,6 +33,7 @@
 #include "international_string_util.h"
 #include "constants/songs.h"
 #include "field_player_avatar.h"
+#include "battle_pyramid_bag.h"
 
 // Menu actions
 enum
@@ -73,12 +74,11 @@ EWRAM_DATA static u8 sSaveDialogTimer = 0;
 EWRAM_DATA static bool8 sSavingComplete = FALSE;
 EWRAM_DATA static u8 sSaveInfoWindowId = 0;
 
-// Extern variables
+// Extern variables.
 extern u8 gDifferentSaveFile;
-extern u16 gSaveFileStatus;
 extern u8 gUnknown_03005DB4;
 
-// Extern functions in uncompiled files
+// Extern functions in not decompiled files.
 extern void sub_80AF688(void);
 extern void var_800D_set_xB(void);
 extern void sub_808B864(void);
@@ -89,7 +89,6 @@ extern void CB2_PokeNav(void);
 extern void sub_80C4DDC(void (*)(void));
 extern void sub_80C51C4(void (*)(void));
 extern void sub_80C4E74(u8, void (*)(void));
-extern void sub_81C4EFC(void);
 extern void ScriptUnfreezeEventObjects(void);
 extern void sub_81A9EC8(void);
 extern void save_serialize_map(void);
@@ -781,7 +780,7 @@ static bool8 StartMenuBattlePyramidBagCallback(void)
         play_some_sound();
         RemoveExtraStartMenuWindows();
         overworld_free_bg_tilemaps();
-        SetMainCallback2(sub_81C4EFC);  // Display battle pyramid bag
+        SetMainCallback2(CB2_PyramidBagMenuFromStartMenu);
 
         return TRUE;
     }