From 4345ba8e6cf145a646666b8d2be1a255873ed29a Mon Sep 17 00:00:00 2001
From: Phlosioneer <mattmdrr2@gmail.com>
Date: Tue, 5 Mar 2019 22:32:28 -0500
Subject: [PATCH] More decompiled and cleanup

---
 asm/menu_unknown.s     | 206 --------------------------------
 data/menu_unknown.s    |   8 --
 include/menu_unknown.h |   4 +-
 include/pokenav.h      |   1 -
 src/menu_unknown.c     | 264 ++++++++++++++++++++++++++++++++++-------
 sym_ewram.txt          |   6 +-
 6 files changed, 226 insertions(+), 263 deletions(-)

diff --git a/asm/menu_unknown.s b/asm/menu_unknown.s
index 6b782f5c4..f534d688e 100644
--- a/asm/menu_unknown.s
+++ b/asm/menu_unknown.s
@@ -6,212 +6,6 @@
 
 	.text
 
-	thumb_func_start sub_81D1F84
-sub_81D1F84: @ 81D1F84
-	push {r4-r7,lr}
-	mov r7, r10
-	mov r6, r9
-	mov r5, r8
-	push {r5-r7}
-	sub sp, 0x8
-	mov r8, r0
-	str r1, [sp]
-	mov r9, r2
-	movs r7, 0
-_081D1F98:
-	lsls r4, r7, 2
-	ldr r1, [sp]
-	adds r0, r4, r1
-	ldrh r1, [r0]
-	lsls r5, r1, 8
-	mov r2, r9
-	adds r0, r4, r2
-	ldrh r0, [r0]
-	subs r0, r1
-	lsls r0, 8
-	movs r1, 0xA
-	bl __divsi3
-	adds r6, r0, 0
-	movs r3, 0
-	adds r7, 0x1
-	mov r10, r7
-	mov r12, r4
-_081D1FBC:
-	lsls r0, r3, 2
-	adds r0, r3
-	lsls r0, 2
-	add r0, r12
-	add r0, r8
-	asrs r2, r5, 8
-	asrs r1, r5, 7
-	movs r7, 0x1
-	ands r1, r7
-	adds r2, r1
-	adds r0, 0x64
-	strh r2, [r0]
-	adds r5, r6
-	adds r0, r3, 0x1
-	lsls r0, 16
-	lsrs r3, r0, 16
-	cmp r3, 0x8
-	bls _081D1FBC
-	lsls r0, r3, 2
-	adds r0, r3
-	lsls r0, 2
-	adds r0, r4, r0
-	add r0, r8
-	mov r1, r9
-	adds r2, r4, r1
-	ldrh r1, [r2]
-	adds r0, 0x64
-	strh r1, [r0]
-	ldr r7, [sp]
-	adds r0, r4, r7
-	ldrh r1, [r0, 0x2]
-	lsls r5, r1, 8
-	ldrh r0, [r2, 0x2]
-	subs r0, r1
-	lsls r0, 8
-	movs r1, 0xA
-	bl __divsi3
-	adds r6, r0, 0
-	movs r3, 0
-	str r4, [sp, 0x4]
-	movs r0, 0x1
-	mov r12, r0
-_081D2012:
-	lsls r0, r3, 2
-	adds r0, r3
-	lsls r0, 2
-	ldr r1, [sp, 0x4]
-	adds r0, r1, r0
-	add r0, r8
-	asrs r2, r5, 8
-	asrs r1, r5, 7
-	mov r7, r12
-	ands r1, r7
-	adds r2, r1
-	adds r0, 0x66
-	strh r2, [r0]
-	adds r5, r6
-	adds r0, r3, 0x1
-	lsls r0, 16
-	lsrs r3, r0, 16
-	cmp r3, 0x8
-	bls _081D2012
-	lsls r0, r3, 2
-	adds r0, r3
-	lsls r0, 2
-	adds r0, r4, r0
-	add r0, r8
-	mov r2, r9
-	adds r1, r4, r2
-	ldrh r1, [r1, 0x2]
-	adds r0, 0x66
-	strh r1, [r0]
-	mov r7, r10
-	lsls r0, r7, 16
-	lsrs r7, r0, 16
-	cmp r7, 0x4
-	bls _081D1F98
-	ldr r1, =0x00000352
-	add r1, r8
-	movs r0, 0
-	strh r0, [r1]
-	add sp, 0x8
-	pop {r3-r5}
-	mov r8, r3
-	mov r9, r4
-	mov r10, r5
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81D1F84
-
-	thumb_func_start sub_81D2074
-sub_81D2074: @ 81D2074
-	push {r4,lr}
-	adds r1, r0, 0
-	ldr r0, =0x00000352
-	adds r4, r1, r0
-	ldrh r0, [r4]
-	cmp r0, 0x9
-	bls _081D208C
-	movs r0, 0
-	b _081D20A6
-	.pool
-_081D208C:
-	adds r0, r1, 0
-	bl sub_81D2230
-	ldrh r1, [r4]
-	adds r1, 0x1
-	strh r1, [r4]
-	lsls r1, 16
-	lsrs r1, 16
-	movs r0, 0xA
-	eors r1, r0
-	negs r0, r1
-	orrs r0, r1
-	lsrs r0, 31
-_081D20A6:
-	pop {r4}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_81D2074
-
-	thumb_func_start sub_81D20AC
-sub_81D20AC: @ 81D20AC
-	ldr r1, =0x00000355
-	adds r0, r1
-	movs r1, 0
-	strb r1, [r0]
-	bx lr
-	.pool
-	thumb_func_end sub_81D20AC
-
-	thumb_func_start sub_81D20BC
-sub_81D20BC: @ 81D20BC
-	push {r4,r5,lr}
-	sub sp, 0xC
-	ldr r1, =0x00000355
-	adds r4, r0, r1
-	ldrb r0, [r4]
-	cmp r0, 0
-	beq _081D20D4
-	cmp r0, 0x1
-	beq _081D20E2
-	b _081D20FA
-	.pool
-_081D20D4:
-	bl ScanlineEffect_Clear
-	ldrb r0, [r4]
-	adds r0, 0x1
-	strb r0, [r4]
-	movs r0, 0x1
-	b _081D20FC
-_081D20E2:
-	mov r0, sp
-	ldr r1, =gUnknown_08625404
-	ldm r1!, {r2,r3,r5}
-	stm r0!, {r2,r3,r5}
-	ldr r0, [sp]
-	ldr r1, [sp, 0x4]
-	ldr r2, [sp, 0x8]
-	bl ScanlineEffect_SetParams
-	ldrb r0, [r4]
-	adds r0, 0x1
-	strb r0, [r4]
-_081D20FA:
-	movs r0, 0
-_081D20FC:
-	add sp, 0xC
-	pop {r4,r5}
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end sub_81D20BC
-
 	thumb_func_start sub_81D2108
 sub_81D2108: @ 81D2108
 	push {r4-r7,lr}
diff --git a/data/menu_unknown.s b/data/menu_unknown.s
index 1ea0786a4..329e00059 100644
--- a/data/menu_unknown.s
+++ b/data/menu_unknown.s
@@ -3,14 +3,6 @@
 
 	.section .rodata
 
-@ ScanlineEffectParams
-gUnknown_08625404:: @ 8625404
-	.4byte 0x04000040 @ REG_ADDR_WIN0H
-    .4byte 0xA6600001 @ SCANLINE_EFFECT_DMACNT_32BIT
-    .byte 1 @ initState
-    .byte 0 @ unused9
-    .byte 0, 0 @ Padding
-
 gUnknown_08625410:: @ 8625410
 	.byte 4, 5, 6, 7, 8, 9, 9, 0xA, 0xA, 0xB, 0xB, 0xC, 0xC, 0xD, 0xD, 0xD, 0xD, 0xE, 0xE, 0xE, 0xE, 0xF, 0xF, 0xF, 0xF, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x1A, 0x1A, 0x1A, 0x1A, 0x1A, 0x1A, 0x1A, 0x1A, 0x1A, 0x1A, 0x1A, 0x1A, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1D, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x23
 
diff --git a/include/menu_unknown.h b/include/menu_unknown.h
index 9d398e2b0..744e985ca 100644
--- a/include/menu_unknown.h
+++ b/include/menu_unknown.h
@@ -18,7 +18,8 @@ struct UnknownStruct_81D1ED4
     u8 unk13C[0x216];
     u16 unk352;
     u8 unk354;
-    u8 unk355[0x23];
+    u8 unk355;
+    u8 unk356[0x22];
 };
 
 bool8 sub_81D1C44(u8 a0);
@@ -33,6 +34,7 @@ void sub_81D1ED4(struct UnknownStruct_81D1ED4 *a0);
 void sub_81D2108(struct UnknownStruct_81D1ED4 *arg0);
 void sub_81D20AC(struct UnknownStruct_81D1ED4 *arg0);
 void sub_81D2230(struct UnknownStruct_81D1ED4 *arg0);
+bool8 sub_81D20BC(struct UnknownStruct_81D1ED4 *arg0);
 void sub_81D3464(void *arg0);
 void sub_81D3480(void *arg0, u8 arg1);
 void sub_81D2754(struct UnknownStruct_81D1ED4 *arg0, void *arg1);
diff --git a/include/pokenav.h b/include/pokenav.h
index 10f042225..e39373b35 100644
--- a/include/pokenav.h
+++ b/include/pokenav.h
@@ -2,7 +2,6 @@
 #define GUARD_POKENAV_H
 #include "list_menu.h"
 
-bool8 sub_81D20BC(void *arg0);
 bool8 sub_81D312C(void *arg0);
 bool8 sub_81D4A58(struct EventObject*);
 void MoveRelearnerPrintText(u8 *);
diff --git a/src/menu_unknown.c b/src/menu_unknown.c
index 303bb7c82..243eb33ff 100644
--- a/src/menu_unknown.c
+++ b/src/menu_unknown.c
@@ -9,72 +9,76 @@
 #include "string_util.h"
 #include "window.h"
 #include "constants/songs.h"
+#include "scanline_effect.h"
 
 #define WINDOW_UNK_0 0
 #define WINDOW_UNK_1 1
 #define WINDOW_UNK_2 2
 
-extern struct ListMenuItem *gUnknown_0203CF4C;
-extern u8 gUnknown_0203CF48[3];
+EWRAM_DATA static u8 sUnknown_0203CF48[3] = {0};
+EWRAM_DATA static struct ListMenuItem *sUnknown_0203CF4C = NULL;
 
 void sub_81D1E7C(s32 itemIndex, bool8 onInit, struct ListMenu *list);
 
-const struct WindowTemplate gUnknown_086253E8[] =
+static const struct WindowTemplate sUnknown_086253E8[] =
 {
     [WINDOW_UNK_0] = {
-        //0x08010100,
         .bg = 0,
         .tilemapLeft = 1,
         .tilemapTop = 1,
         .width = 8,
-	    //0x00080F02,
         .height = 2,
         .paletteNum = 0xF,
         .baseBlock = 0x8
     },
     [WINDOW_UNK_1] = {
-        //0x08 01 15 00,
         .bg = 0,
         .tilemapLeft = 21,
         .tilemapTop = 1,
         .width = 8,
-        //0x0018 0F 12,
         .height = 18,
         .paletteNum = 0xF,
         .baseBlock = 0x18
     },
     [WINDOW_UNK_2] = {
-	    //0x0B 01 01 00
         .bg = 0,
         .tilemapLeft = 1,
         .tilemapTop = 1,
         .width = 11,
-	    //0x0018 0F 08
         .height = 8,
         .paletteNum = 0xF,
         .baseBlock = 0x18
     }
 };
 
-const u8 gUnknown_08625400[] = {
+static const u8 sUnknown_08625400[] =
+{
     1, 2, 3
 };
 
 static const u8 sEmptyItemName[] = _("");
 
+static const struct ScanlineEffectParams sUnknown_08625404 =
+{
+    .dmaDest = (void*)REG_ADDR_WIN0H,
+    .dmaControl = SCANLINE_EFFECT_DMACNT_32BIT,
+    .initState = 1,
+    .unused9 = 0
+};
+
 bool8 sub_81D1C44(u8 count)
 {
     u32 i;
     struct ListMenuItem **v1;
-    v1 = &gUnknown_0203CF4C;
+    v1 = &sUnknown_0203CF4C;
     *v1 = Alloc(count * sizeof(struct ListMenuItem) + sizeof(struct ListMenuItem));
     
-    if (gUnknown_0203CF4C == NULL)
+    if (sUnknown_0203CF4C == NULL)
         return FALSE;
     
-    for (i = 0; i < ARRAY_COUNT(gUnknown_0203CF48); i = (u8)(i + 1))
+    for (i = 0; i < ARRAY_COUNT(sUnknown_0203CF48); i = (u8)(i + 1))
     {
-        gUnknown_0203CF48[i] |= 0xFF;
+        sUnknown_0203CF48[i] |= 0xFF;
     }
 
     return TRUE;
@@ -84,7 +88,7 @@ u8 sub_81D1C84(u8 a0)
 {
     struct WindowTemplate template;
 
-    u8 windowId = gUnknown_0203CF48[a0];
+    u8 windowId = sUnknown_0203CF48[a0];
     if (windowId == 0xFF)
     {
         if (a0 == WINDOW_UNK_2)
@@ -93,31 +97,31 @@ u8 sub_81D1C84(u8 a0)
             u32 v2;
             s32 v3;
 
-            template = gUnknown_086253E8[WINDOW_UNK_2];
+            template = sUnknown_086253E8[WINDOW_UNK_2];
             v3 = GetMaxWidthInMenuTable(&gMailboxMailOptions[0], 4);
             template.width = v3;
-            gUnknown_0203CF48[WINDOW_UNK_2] = AddWindow(&template);
+            sUnknown_0203CF48[WINDOW_UNK_2] = AddWindow(&template);
         }
         else
         {
-            gUnknown_0203CF48[a0] = AddWindow(&gUnknown_086253E8[a0]);
+            sUnknown_0203CF48[a0] = AddWindow(&sUnknown_086253E8[a0]);
         }
-        SetStandardWindowBorderStyle(gUnknown_0203CF48[a0], 0);
+        SetStandardWindowBorderStyle(sUnknown_0203CF48[a0], 0);
     }
-    return gUnknown_0203CF48[a0];
+    return sUnknown_0203CF48[a0];
 }
 
 void sub_81D1D04(u8 a0)
 {
-    sub_8198070(gUnknown_0203CF48[a0], 0);
-    ClearWindowTilemap(gUnknown_0203CF48[a0]);
-    RemoveWindow(gUnknown_0203CF48[a0]);
-    gUnknown_0203CF48[a0] = 0xFF;
+    sub_8198070(sUnknown_0203CF48[a0], 0);
+    ClearWindowTilemap(sUnknown_0203CF48[a0]);
+    RemoveWindow(sUnknown_0203CF48[a0]);
+    sUnknown_0203CF48[a0] = 0xFF;
 }
 
 u8 sub_81D1D34(u8 a0)
 {
-    return gUnknown_0203CF48[a0];
+    return sUnknown_0203CF48[a0];
 }
 
 void sub_81D1D44(u8 windowId, s32 itemId, u8 y)
@@ -133,7 +137,7 @@ void sub_81D1D44(u8 windowId, s32 itemId, u8 y)
     length = StringLength(buffer);
     if (length <= 5)
         ConvertInternationalString(buffer, LANGUAGE_JAPANESE);
-    AddTextPrinterParameterized4(windowId, 1, 8, y, 0, 0, gUnknown_08625400, -1, buffer);
+    AddTextPrinterParameterized4(windowId, 1, 8, y, 0, 0, sUnknown_08625400, -1, buffer);
 }
 
 u8 sub_81D1DC0(struct PlayerPCItemPageStruct *page)
@@ -141,16 +145,16 @@ u8 sub_81D1DC0(struct PlayerPCItemPageStruct *page)
     u16 i;
     for (i = 0; i < page->count; i++)
     {
-        gUnknown_0203CF4C[i].name = sEmptyItemName;
-        gUnknown_0203CF4C[i].id = i;
+        sUnknown_0203CF4C[i].name = sEmptyItemName;
+        sUnknown_0203CF4C[i].id = i;
     }
 
-    gUnknown_0203CF4C[i].name = gText_Cancel2;
-    gUnknown_0203CF4C[i].id = LIST_CANCEL;
+    sUnknown_0203CF4C[i].name = gText_Cancel2;
+    sUnknown_0203CF4C[i].id = LIST_CANCEL;
 
-    gMultiuseListMenuTemplate.items = gUnknown_0203CF4C;
+    gMultiuseListMenuTemplate.items = sUnknown_0203CF4C;
     gMultiuseListMenuTemplate.totalItems = page->count + 1;
-    gMultiuseListMenuTemplate.windowId = gUnknown_0203CF48[1];
+    gMultiuseListMenuTemplate.windowId = sUnknown_0203CF48[1];
     gMultiuseListMenuTemplate.header_X = 0;
     gMultiuseListMenuTemplate.item_X = 8;
     gMultiuseListMenuTemplate.cursor_X = 0;
@@ -182,40 +186,216 @@ void sub_81D1E90(struct PlayerPCItemPageStruct *page)
 
 void sub_81D1EC0(void)
 {
-    Free(gUnknown_0203CF4C);
+    Free(sUnknown_0203CF4C);
 }
 
 void sub_81D1ED4(struct UnknownStruct_81D1ED4 *a0)
 {
     u8 j;
     u8 i;
-    u8 v1;
     for (j = 0; j < 5; j++)
     {
         for (i = 0; i < 10; i++)
         {
-            // u16
             a0->unk64[i][j].unk0 = 0;
             a0->unk64[i][j].unk2 = 0;
         }
         for (i = 0; i < 4; i++)
         {
-            // u8
             a0->unk0[i][j] = 0;
-
-            // u16
             a0->unk14[i][j].unk0 = 0x9B;
             a0->unk14[i][j].unk2 = 0x5B;
         }
 
-        // u16
         a0->unk12C[j].unk0 = 0;
         a0->unk12C[j].unk2 = 0;
     }
 
-    // u8
     a0->unk354 = 0;
-    
-    // u16
     a0->unk352 = 0;
+}
+
+NAKED
+void sub_81D1F84(struct UnknownStruct_81D1ED4 *arg0, struct UnknownSubStruct_81D1ED4 arg1[4][5], struct UnknownSubStruct_81D1ED4 arg2[4][5])
+{
+    /*
+    u16 j;
+    u16 i;
+    s16 v1;
+    s16 v2;
+    for (j = 0; j < 5; j++)
+    {
+        v1 = arg1[0][j].unk0;
+        v2 = (arg2[0][j].unk0 - v1) / 10;
+
+        for (i = 0; i < 9; i++)
+        {
+            arg0->unk64[i][j].unk0 = v1 + ((v1 << 1) & 1);
+        }
+
+        for (i = 0; i < 9; i++)
+        {
+
+        }
+    }
+    */
+    asm(".syntax unified\n\
+    push {r4-r7,lr}\n\
+	mov r7, r10\n\
+	mov r6, r9\n\
+	mov r5, r8\n\
+	push {r5-r7}\n\
+	sub sp, 0x8\n\
+	mov r8, r0\n\
+	str r1, [sp]\n\
+	mov r9, r2\n\
+	movs r7, 0\n\
+_081D1F98:\n\
+	lsls r4, r7, 2\n\
+	ldr r1, [sp]\n\
+	adds r0, r4, r1\n\
+	ldrh r1, [r0]\n\
+	lsls r5, r1, 8\n\
+	mov r2, r9\n\
+	adds r0, r4, r2\n\
+	ldrh r0, [r0]\n\
+	subs r0, r1\n\
+	lsls r0, 8\n\
+	movs r1, 0xA\n\
+	bl __divsi3\n\
+	adds r6, r0, 0\n\
+	movs r3, 0\n\
+	adds r7, 0x1\n\
+	mov r10, r7\n\
+	mov r12, r4\n\
+_081D1FBC:\n\
+	lsls r0, r3, 2\n\
+	adds r0, r3\n\
+	lsls r0, 2\n\
+	add r0, r12\n\
+	add r0, r8\n\
+	asrs r2, r5, 8\n\
+	asrs r1, r5, 7\n\
+	movs r7, 0x1\n\
+	ands r1, r7\n\
+	adds r2, r1\n\
+	adds r0, 0x64\n\
+	strh r2, [r0]\n\
+	adds r5, r6\n\
+	adds r0, r3, 0x1\n\
+	lsls r0, 16\n\
+	lsrs r3, r0, 16\n\
+	cmp r3, 0x8\n\
+	bls _081D1FBC\n\
+	lsls r0, r3, 2\n\
+	adds r0, r3\n\
+	lsls r0, 2\n\
+	adds r0, r4, r0\n\
+	add r0, r8\n\
+	mov r1, r9\n\
+	adds r2, r4, r1\n\
+	ldrh r1, [r2]\n\
+	adds r0, 0x64\n\
+	strh r1, [r0]\n\
+	ldr r7, [sp]\n\
+	adds r0, r4, r7\n\
+	ldrh r1, [r0, 0x2]\n\
+	lsls r5, r1, 8\n\
+	ldrh r0, [r2, 0x2]\n\
+	subs r0, r1\n\
+	lsls r0, 8\n\
+	movs r1, 0xA\n\
+	bl __divsi3\n\
+	adds r6, r0, 0\n\
+	movs r3, 0\n\
+	str r4, [sp, 0x4]\n\
+	movs r0, 0x1\n\
+	mov r12, r0\n\
+_081D2012:\n\
+	lsls r0, r3, 2\n\
+	adds r0, r3\n\
+	lsls r0, 2\n\
+	ldr r1, [sp, 0x4]\n\
+	adds r0, r1, r0\n\
+	add r0, r8\n\
+	asrs r2, r5, 8\n\
+	asrs r1, r5, 7\n\
+	mov r7, r12\n\
+	ands r1, r7\n\
+	adds r2, r1\n\
+	adds r0, 0x66\n\
+	strh r2, [r0]\n\
+	adds r5, r6\n\
+	adds r0, r3, 0x1\n\
+	lsls r0, 16\n\
+	lsrs r3, r0, 16\n\
+	cmp r3, 0x8\n\
+	bls _081D2012\n\
+	lsls r0, r3, 2\n\
+	adds r0, r3\n\
+	lsls r0, 2\n\
+	adds r0, r4, r0\n\
+	add r0, r8\n\
+	mov r2, r9\n\
+	adds r1, r4, r2\n\
+	ldrh r1, [r1, 0x2]\n\
+	adds r0, 0x66\n\
+	strh r1, [r0]\n\
+	mov r7, r10\n\
+	lsls r0, r7, 16\n\
+	lsrs r7, r0, 16\n\
+	cmp r7, 0x4\n\
+	bls _081D1F98\n\
+	ldr r1, =0x00000352\n\
+	add r1, r8\n\
+	movs r0, 0\n\
+	strh r0, [r1]\n\
+	add sp, 0x8\n\
+	pop {r3-r5}\n\
+	mov r8, r3\n\
+	mov r9, r4\n\
+	mov r10, r5\n\
+	pop {r4-r7}\n\
+	pop {r0}\n\
+	bx r0\n\
+	.pool\n\
+    .syntax divided");
+}
+
+bool32 sub_81D2074(struct UnknownStruct_81D1ED4 *a0)
+{
+    if (a0->unk352 < 10)
+    {
+        sub_81D2230(a0);
+        return ++a0->unk352 != 10;
+    }
+    else
+    {
+        return FALSE;
+    }
+    
+}
+
+void sub_81D20AC(struct UnknownStruct_81D1ED4 *a0)
+{
+    a0->unk355 = 0;
+}
+
+bool8 sub_81D20BC(struct UnknownStruct_81D1ED4 *arg0)
+{
+    struct ScanlineEffectParams params;
+    switch (arg0->unk355)
+    {
+    case 0:
+        ScanlineEffect_Clear();
+        arg0->unk355++;
+        return TRUE;
+    case 1:
+        params = sUnknown_08625404;
+        ScanlineEffect_SetParams(params);
+        arg0->unk355++;
+        return FALSE;
+    default:
+        return FALSE;
+    }
 }
\ No newline at end of file
diff --git a/sym_ewram.txt b/sym_ewram.txt
index 7702739dd..f6db45f6d 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -237,11 +237,7 @@ gUnknown_0203CF40: @ 203CF40
 gUnknown_0203CF44: @ 203CF44
 	.space 0x4
 
-gUnknown_0203CF48: @ 203CF48
-	.space 0x4
-
-gUnknown_0203CF4C: @ 203CF4C
-	.space 0x4
+    .include "src/menu_unknown.o"
 
 gUnknown_0203CF50: @ 203CF50
 	.space 0x4