diff --git a/asm/menu_helpers.s b/asm/menu_helpers.s
deleted file mode 100644
index dd8e1401b..000000000
--- a/asm/menu_helpers.s
+++ /dev/null
@@ -1,230 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-
-
-
-	thumb_func_start sub_8122344
-sub_8122344: @ 8122344
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	mov r8, r0
-	lsls r1, 24
-	lsrs r6, r1, 24
-	movs r5, 0
-	cmp r5, r6
-	bcs _0812239C
-	ldr r7, =gSprites
-_08122358:
-	lsls r1, r5, 4
-	ldr r0, =gUnknown_0859F524
-	movs r2, 0
-	movs r3, 0
-	bl CreateSprite
-	mov r1, r8
-	adds r4, r1, r5
-	strb r0, [r4]
-	cmp r5, 0
-	beq _0812237E
-	ldrb r1, [r4]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r7
-	movs r1, 0x1
-	bl StartSpriteAnim
-_0812237E:
-	ldrb r1, [r4]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r7
-	adds r0, 0x3E
-	ldrb r1, [r0]
-	movs r2, 0x4
-	orrs r1, r2
-	strb r1, [r0]
-	adds r0, r5, 0x1
-	lsls r0, 24
-	lsrs r5, r0, 24
-	cmp r5, r6
-	bcc _08122358
-_0812239C:
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_8122344
-
-	thumb_func_start sub_81223B0
-sub_81223B0: @ 81223B0
-	push {r4-r7,lr}
-	adds r6, r0, 0
-	lsls r1, 24
-	lsrs r5, r1, 24
-	movs r4, 0
-	cmp r4, r5
-	bcs _081223F6
-	ldr r7, =gSprites
-_081223C0:
-	subs r0, r5, 0x1
-	cmp r4, r0
-	bne _081223DC
-	adds r0, r6, r4
-	ldrb r1, [r0]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r7
-	bl DestroySpriteAndFreeResources
-	b _081223EC
-	.pool
-_081223DC:
-	adds r0, r6, r4
-	ldrb r1, [r0]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r7
-	bl DestroySprite
-_081223EC:
-	adds r0, r4, 0x1
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, r5
-	bcc _081223C0
-_081223F6:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_81223B0
-
-	thumb_func_start sub_81223FC
-sub_81223FC: @ 81223FC
-	push {r4-r7,lr}
-	adds r6, r0, 0
-	lsls r1, 24
-	lsrs r4, r1, 24
-	lsls r2, 24
-	lsrs r0, r2, 24
-	movs r3, 0
-	cmp r3, r4
-	bcs _0812243E
-	ldr r1, =gSprites
-	mov r12, r1
-	movs r1, 0x1
-	ands r0, r1
-	lsls r5, r0, 2
-	movs r7, 0x5
-	negs r7, r7
-_0812241C:
-	adds r0, r6, r3
-	ldrb r0, [r0]
-	lsls r1, r0, 4
-	adds r1, r0
-	lsls r1, 2
-	add r1, r12
-	adds r1, 0x3E
-	ldrb r2, [r1]
-	adds r0, r7, 0
-	ands r0, r2
-	orrs r0, r5
-	strb r0, [r1]
-	adds r0, r3, 0x1
-	lsls r0, 24
-	lsrs r3, r0, 24
-	cmp r3, r4
-	bcc _0812241C
-_0812243E:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81223FC
-
-	thumb_func_start sub_8122448
-@ void sub_8122448(int a1, u8 a2, u16 x, u16 y)
-sub_8122448: @ 8122448
-	push {r4-r7,lr}
-	mov r7, r9
-	mov r6, r8
-	push {r6,r7}
-	adds r6, r0, 0
-	lsls r1, 24
-	lsrs r4, r1, 24
-	lsls r2, 16
-	lsrs r7, r2, 16
-	lsls r3, 16
-	lsrs r3, 16
-	mov r9, r3
-	movs r0, 0x80
-	ands r0, r4
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	movs r0, 0x7F
-	ands r4, r0
-	movs r3, 0
-	cmp r3, r4
-	bcs _081224C8
-	ldr r5, =gSprites
-	lsls r0, r7, 16
-	asrs r0, 16
-	subs r0, 0x8
-	mov r12, r0
-_0812247E:
-	subs r0, r4, 0x1
-	cmp r3, r0
-	bne _081224A0
-	mov r0, r8
-	cmp r0, 0
-	beq _081224A0
-	adds r2, r6, r3
-	ldrb r1, [r2]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r5
-	mov r1, r12
-	strh r1, [r0, 0x24]
-	b _081224AE
-	.pool
-_081224A0:
-	adds r2, r6, r3
-	ldrb r1, [r2]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r5
-	strh r7, [r0, 0x24]
-_081224AE:
-	ldrb r1, [r2]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r5
-	mov r1, r9
-	adds r1, 0x1
-	strh r1, [r0, 0x22]
-	adds r0, r3, 0x1
-	lsls r0, 24
-	lsrs r3, r0, 24
-	cmp r3, r4
-	bcc _0812247E
-_081224C8:
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8122448
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/data/menu_helpers.s b/data/menu_helpers.s
deleted file mode 100644
index 25ca66485..000000000
--- a/data/menu_helpers.s
+++ /dev/null
@@ -1,37 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.section .rodata
-	.align 2, 0
-
-gUnknown_0859F4E8:: @ 859F4E8
-    .2byte 0x00
-	.2byte 0x4000 
-	.2byte 0x00
-	.2byte 0x00
-
-gUnknown_0859F4F0:: @ 859F4F0
-    obj_image_anim_frame 0x00, 0x00
-	obj_image_anim_end
-
-gUnknown_0859F4F8:: @ 859F4F8
-    obj_image_anim_frame 0x04, 0x00
-	obj_image_anim_end
-
-gUnknown_0859F500:: @ 859F500
-    obj_image_anim_frame 0x00, 0x40
-	obj_image_anim_end
-
-gUnknown_0859F508:: @ 859F508
-    .4byte gUnknown_0859F4F0
-    .4byte gUnknown_0859F4F8
-    .4byte gUnknown_0859F500
-	
-gUnknown_0859F514:: @ 859F514
-	.4byte gBagSwapLineGfx, 0x6D0100
-
-gUnknown_0859F51C:: @ 859F51C
-	.4byte gBagSwapLinePal, 0x6D
-
-gUnknown_0859F524:: @ 859F524
-	spr_template 0x6D, 0x6D, gUnknown_0859F4E8, gUnknown_0859F508, NULL, gDummySpriteAffineAnimTable, SpriteCallbackDummy
diff --git a/include/menu_helpers.h b/include/menu_helpers.h
index 4de6603a3..387a89fdd 100644
--- a/include/menu_helpers.h
+++ b/include/menu_helpers.h
@@ -14,29 +14,27 @@ struct YesNoFuncTable
 // Exported RAM declarations
 
 // Exported ROM declarations
-void sub_812220C(struct ItemSlot *, u8, u8 *, u8 *, u8);
-void sub_812225C(u16 *, u16 *, u8, u8);
-void sub_8122298(u16 *, u16 *, u8, u8, u8);
-void sub_8121F68(u8 taskId, const struct YesNoFuncTable *data);
-bool8 sub_81221AC(void);
-bool8 sub_81221EC(void);
 void ResetVramOamAndBgCntRegs(void);
-void SetVBlankHBlankCallbacksToNull(void);
 void ResetAllBgsCoordinates(void);
+void SetVBlankHBlankCallbacksToNull(void);
+void DisplayMessageAndContinueTask(u8 taskId, u8 windowId, u16 arg2, u8 arg3, u8 fontId, u8 textSpeed, const u8 *string, void *taskFunc);
 bool16 RunTextPrintersRetIsActive(u8 textPrinterId);
-void sub_8122344(u8 *arg0, u8 arg1);
-void sub_81223B0(u8 *arg0, u8 arg1);
-void LoadListMenuArrowsGfx(void);
-void sub_81223FC(u8 *a0, u8 count, u8 a2);
-void sub_8122448(u8 *a0, u8 count, u16 x, u16 y);
-void DisplayMessageAndContinueTask(u8 taskId, u8 arg1, u16 arg2, u8 arg3, u8 arg4, u8 textSpeed, const u8 *string, void *taskFunc);
+void sub_8121F68(u8 taskId, const struct YesNoFuncTable *data);
 void CreateYesNoMenuWithCallbacks(u8 taskId, const struct WindowTemplate *template, u8 arg2, u8 arg3, u8 arg4, u16 tileStart, u8 palette, const struct YesNoFuncTable *yesNo);
+bool8 AdjustQuantityAccordingToDPadInput(s16 *arg0, u16 arg1);
 u8 GetLRKeysState(void);
 u8 sub_812210C(void);
-bool8 sub_81221EC(void);
+bool8 sub_8122148(u16 itemId);
+bool8 itemid_80BF6D8_mail_related(u16 itemId);
 bool8 sub_81221AC(void);
-bool8 sub_8122148(u16);
-bool8 AdjustQuantityAccordingToDPadInput(s16*, u16);
-bool8 itemid_80BF6D8_mail_related(u16);
+bool8 sub_81221EC(void);
+void sub_812220C(struct ItemSlot *slots, u8 count, u8 *arg2, u8 *usedSlotsCount, u8 maxUsedSlotsCount);
+void sub_812225C(u16 *arg0, u16 *arg1, u8 arg2, u8 arg3);
+void sub_8122298(u16 *arg0, u16 *arg1, u8 arg2, u8 arg3, u8 arg4);
+void LoadListMenuArrowsGfx(void);
+void sub_8122344(u8 *spriteIds, u8 count);
+void sub_81223B0(u8 *spriteIds, u8 count);
+void sub_81223FC(u8 *spriteIds, u8 count, bool8 invisible);
+void sub_8122448(u8 *spriteIds, u8 count, s16 x, u16 y);
 
 #endif //GUARD_MENU_HELPERS_H
diff --git a/ld_script.txt b/ld_script.txt
index 2aa273ac7..d053e670e 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -164,7 +164,6 @@ SECTIONS {
         src/mauville_old_man.o(.text);
         src/mail.o(.text);
         src/menu_helpers.o(.text);
-        asm/menu_helpers.o(.text);
         src/dewford_trend.o(.text);
         src/heal_location.o(.text);
         src/region_map.o(.text);
@@ -457,7 +456,7 @@ SECTIONS {
         src/mon_markings.o(.rodata);
         src/mauville_old_man.o(.rodata);
         src/mail.o(.rodata);
-        data/menu_helpers.o(.rodata);
+        src/menu_helpers.o(.rodata);
         src/heal_location.o(.rodata);
         src/region_map.o(.rodata);
         data/cute_sketch.o(.rodata);
diff --git a/src/menu_helpers.c b/src/menu_helpers.c
index 8e8197a12..178fbb5fa 100644
--- a/src/menu_helpers.c
+++ b/src/menu_helpers.c
@@ -17,19 +17,85 @@
 #include "constants/items.h"
 #include "constants/maps.h"
 
-extern u8 gUnknown_0203A140;
-extern TaskFunc gUnknown_0300117C;
-extern struct YesNoFuncTable gUnknown_0203A138;
-
-extern const struct CompressedSpriteSheet gUnknown_0859F514;
-extern const struct CompressedSpritePalette gUnknown_0859F51C;
-
-extern bool32 InUnionRoom(void);
 extern bool32 sub_800B504(void);
 
+extern const u8 gBagSwapLineGfx[];
+extern const u8 gBagSwapLinePal[];
+
 // this file's functions
-void Task_ContinueTaskAfterMessagePrints(u8 taskId);
-void Task_CallYesOrNoCallback(u8 taskId);
+static void Task_ContinueTaskAfterMessagePrints(u8 taskId);
+static void Task_CallYesOrNoCallback(u8 taskId);
+
+// EWRAM vars
+EWRAM_DATA static struct YesNoFuncTable gUnknown_0203A138 = {0};
+EWRAM_DATA static u8 gUnknown_0203A140 = 0;
+
+// IWRAM bss vars
+IWRAM_DATA static TaskFunc gUnknown_0300117C;
+
+// const rom data
+static const struct OamData sOamData_859F4E8 =
+{
+    .y = 0,
+    .affineMode = 0,
+    .objMode = 0,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 0,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 1,
+    .tileNum = 0,
+    .priority = 0,
+    .paletteNum = 0,
+    .affineParam = 0
+};
+
+static const union AnimCmd sSpriteAnim_859F4F0[] =
+{
+    ANIMCMD_FRAME(0, 0),
+    ANIMCMD_END
+};
+
+static const union AnimCmd sSpriteAnim_859F4F8[] =
+{
+    ANIMCMD_FRAME(4, 0),
+    ANIMCMD_END
+};
+
+static const union AnimCmd sSpriteAnim_859F500[] =
+{
+    ANIMCMD_FRAME(0, 0, 1, 0),
+    ANIMCMD_END
+};
+
+static const union AnimCmd *const sSpriteAnimTable_859F508[] =
+{
+    sSpriteAnim_859F4F0,
+    sSpriteAnim_859F4F8,
+    sSpriteAnim_859F500
+};
+
+static const struct CompressedSpriteSheet gUnknown_0859F514 =
+{
+    gBagSwapLineGfx, 0x100, 109
+};
+
+static const struct CompressedSpritePalette gUnknown_0859F51C =
+{
+    gBagSwapLinePal, 109
+};
+
+static const struct SpriteTemplate gUnknown_0859F524 =
+{
+    .tileTag = 109,
+    .paletteTag = 109,
+    .oam = &sOamData_859F4E8,
+    .anims = sSpriteAnimTable_859F508,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = SpriteCallbackDummy,
+};
 
 // code
 void ResetVramOamAndBgCntRegs(void)
@@ -82,7 +148,7 @@ bool16 RunTextPrintersRetIsActive(u8 textPrinterId)
     return IsTextPrinterActive(textPrinterId);
 }
 
-void Task_ContinueTaskAfterMessagePrints(u8 taskId)
+static void Task_ContinueTaskAfterMessagePrints(u8 taskId)
 {
     if (!RunTextPrintersRetIsActive(gUnknown_0203A140))
         gUnknown_0300117C(taskId);
@@ -101,7 +167,7 @@ void CreateYesNoMenuWithCallbacks(u8 taskId, const struct WindowTemplate *templa
     gTasks[taskId].func = Task_CallYesOrNoCallback;
 }
 
-void Task_CallYesOrNoCallback(u8 taskId)
+static void Task_CallYesOrNoCallback(u8 taskId)
 {
     switch (ProcessMenuInputNoWrap_())
     {
@@ -296,105 +362,94 @@ void sub_812225C(u16 *arg0, u16 *arg1, u8 arg2, u8 arg3)
     }
 }
 
-#ifdef NONMATCHING
 void sub_8122298(u16 *arg0, u16 *arg1, u8 arg2, u8 arg3, u8 arg4)
 {
-    if (arg2 & 1)
-    {
+    u8 i;
 
+    if (arg4 % 2 != 0)
+    {
+        if ((*arg1) >= arg4 / 2)
+        {
+            for (i = 0; i < (*arg1) - (arg4 / 2); i++)
+            {
+                if ((*arg0) + arg2 == arg3)
+                    break;
+                (*arg1)--;
+                (*arg0)++;
+            }
+        }
     }
     else
     {
-
+        if ((*arg1) >= (arg4 / 2) + 1)
+        {
+            for (i = 0; i <= (*arg1) - (arg4 / 2); i++)
+            {
+                if ((*arg0) + arg2 == arg3)
+                    break;
+                (*arg1)--;
+                (*arg0)++;
+            }
+        }
     }
 }
-#else
-NAKED
-void sub_8122298(u16 *arg0, u16 *arg1, u8 arg2, u8 arg3, u8 arg4)
-{
-    asm_unified("\n\
-                	push {r4-r7,lr}\n\
-	adds r5, r0, 0\n\
-	adds r4, r1, 0\n\
-	ldr r0, [sp, 0x14]\n\
-	lsls r2, 24\n\
-	lsrs r7, r2, 24\n\
-	lsls r3, 24\n\
-	lsrs r6, r3, 24\n\
-	lsls r2, r0, 24\n\
-	lsrs r0, r2, 24\n\
-	movs r1, 0x1\n\
-	ands r0, r1\n\
-	cmp r0, 0\n\
-	beq _081222F0\n\
-	lsrs r2, 25\n\
-	ldrh r0, [r4]\n\
-	cmp r0, r2\n\
-	bcc _08122322\n\
-	movs r1, 0\n\
-	subs r0, r2\n\
-	cmp r1, r0\n\
-	bge _08122322\n\
-	ldrh r0, [r5]\n\
-	adds r0, r7\n\
-	cmp r0, r6\n\
-	beq _08122322\n\
-_081222CC:\n\
-	ldrh r0, [r4]\n\
-	subs r0, 0x1\n\
-	strh r0, [r4]\n\
-	ldrh r0, [r5]\n\
-	adds r0, 0x1\n\
-	strh r0, [r5]\n\
-	adds r0, r1, 0x1\n\
-	lsls r0, 24\n\
-	lsrs r1, r0, 24\n\
-	ldrh r0, [r4]\n\
-	subs r0, r2\n\
-	cmp r1, r0\n\
-	bge _08122322\n\
-	ldrh r0, [r5]\n\
-	adds r0, r7\n\
-	cmp r0, r6\n\
-	bne _081222CC\n\
-	b _08122322\n\
-_081222F0:\n\
-	ldrh r3, [r4]\n\
-	lsrs r2, 25\n\
-	adds r0, r2, 0x1\n\
-	cmp r3, r0\n\
-	blt _08122322\n\
-	movs r1, 0\n\
-	subs r0, r3, r2\n\
-	b _08122316\n\
-_08122300:\n\
-	ldrh r0, [r4]\n\
-	subs r0, 0x1\n\
-	strh r0, [r4]\n\
-	ldrh r0, [r5]\n\
-	adds r0, 0x1\n\
-	strh r0, [r5]\n\
-	adds r0, r1, 0x1\n\
-	lsls r0, 24\n\
-	lsrs r1, r0, 24\n\
-	ldrh r0, [r4]\n\
-	subs r0, r2\n\
-_08122316:\n\
-	cmp r1, r0\n\
-	bgt _08122322\n\
-	ldrh r0, [r5]\n\
-	adds r0, r7\n\
-	cmp r0, r6\n\
-	bne _08122300\n\
-_08122322:\n\
-	pop {r4-r7}\n\
-	pop {r0}\n\
-	bx r0");
-}
-#endif // NONMATCHING
 
 void LoadListMenuArrowsGfx(void)
 {
     LoadCompressedObjectPic(&gUnknown_0859F514);
     LoadCompressedObjectPalette(&gUnknown_0859F51C);
 }
+
+void sub_8122344(u8 *spriteIds, u8 count)
+{
+    u8 i;
+
+    for (i = 0; i < count; i++)
+    {
+        spriteIds[i] = CreateSprite(&gUnknown_0859F524, i * 16, 0, 0);
+        if (i != 0)
+            StartSpriteAnim(&gSprites[spriteIds[i]], 1);
+
+        gSprites[spriteIds[i]].invisible = 1;
+    }
+}
+
+void sub_81223B0(u8 *spriteIds, u8 count)
+{
+    u8 i;
+
+    for (i = 0; i < count; i++)
+    {
+        if (i == count - 1)
+            DestroySpriteAndFreeResources(&gSprites[spriteIds[i]]);
+        else
+            DestroySprite(&gSprites[spriteIds[i]]);
+    }
+}
+
+void sub_81223FC(u8 *spriteIds, u8 count, bool8 invisible)
+{
+    u8 i;
+
+    for (i = 0; i < count; i++)
+    {
+        gSprites[spriteIds[i]].invisible = invisible;
+    }
+}
+
+void sub_8122448(u8 *spriteIds, u8 count, s16 x, u16 y)
+{
+    u8 i;
+    bool8 unknownBit = count & 0x80;
+    count &= ~(0x80);
+
+    for (i = 0; i < count; i++)
+    {
+        if (i == count - 1 && unknownBit)
+            gSprites[spriteIds[i]].pos2.x = x - 8;
+        else
+            gSprites[spriteIds[i]].pos2.x = x;
+
+        gSprites[spriteIds[i]].pos1.y = 1 + y;
+    }
+}
diff --git a/sym_bss.txt b/sym_bss.txt
index 186ff8ced..089f25761 100644
--- a/sym_bss.txt
+++ b/sym_bss.txt
@@ -29,11 +29,7 @@
 	.include "src/record_mixing.o"
 	.include "src/tv.o"
 	.include "src/mauville_old_man.o"
-
-	.align 2
-gUnknown_0300117C: @ 300117C
-	.space 0x4
-
+	.include "src/menu_helpers.o"
 	.include "src/region_map.o"
 
 gUnknown_03001188: @ 3001188
diff --git a/sym_ewram.txt b/sym_ewram.txt
index dd41ff5ac..4d7ae4f19 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -533,13 +533,7 @@ gUnknown_0203A120: @ 203A120
 	.include "src/mon_markings.o"
 	.include "src/mauville_old_man.o"
     .include "src/mail.o"
-
-gUnknown_0203A138: @ 203A138
-	.space 0x8
-
-gUnknown_0203A140: @ 203A140
-	.space 0x4
-
+    .include "src/menu_helpers.o"
 	.include "src/region_map.o"
     .include "src/decoration.o"
     .align 2