diff --git a/asm/code_8040094.s b/asm/code_8040094.s
index 48176725e..a5aa409fc 100644
--- a/asm/code_8040094.s
+++ b/asm/code_8040094.s
@@ -5,100 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_8040150
-sub_8040150:
-	push {r4-r7,lr}
-	mov r7, r9
-	mov r6, r8
-	push {r6,r7}
-	sub sp, 0x4
-	lsls r0, 24
-	lsrs r0, 24
-	mov r9, r0
-	movs r0, 0
-	ldr r2, _080401EC
-_08040164:
-	movs r4, 0
-	lsls r1, r0, 3
-	adds r3, r0, 0x1
-	mov r8, r3
-	subs r1, r0
-	lsls r0, r1, 7
-	ldr r3, _080401F0
-	adds r6, r0, r3
-	lsls r5, r1, 2
-_08040176:
-	ldr r0, [r2]
-	adds r0, r6
-	lsls r1, r4, 5
-	adds r0, r1
-	movs r1, 0x20
-	str r2, [sp]
-	bl CpuClear
-	ldr r2, [sp]
-	ldr r0, [r2]
-	adds r1, r4, r5
-	ldr r3, _080401F4
-	adds r0, r3
-	adds r0, r1
-	movs r7, 0
-	strb r7, [r0]
-	adds r4, 0x1
-	cmp r4, 0x1B
-	ble _08040176
-	mov r0, r8
-	cmp r0, 0xF
-	ble _08040164
-	mov r0, r9
-	cmp r0, 0
-	bne _080401B0
-	ldr r1, _080401F8
-	movs r0, 0x64
-	strh r0, [r1]
-	strh r0, [r1, 0x2]
-_080401B0:
-	ldr r3, _080401EC
-	ldr r0, [r3]
-	ldr r2, _080401FC
-	adds r1, r0, r2
-	str r7, [r1]
-	ldr r1, _08040200
-	adds r0, r1
-	movs r2, 0x1
-	strb r2, [r0]
-	ldr r0, [r3]
-	ldr r3, _08040204
-	adds r0, r3
-	strb r7, [r0]
-	ldr r0, _08040208
-	strb r2, [r0]
-	ldr r1, _0804020C
-	ldr r0, _08040210
-	str r0, [r1]
-	ldr r0, _08040214
-	strb r2, [r0]
-	bl sub_8040238
-	add sp, 0x4
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080401EC: .4byte gDungeon
-_080401F0: .4byte 0x0001822c
-_080401F4: .4byte 0x0001ba2c
-_080401F8: .4byte gUnknown_203B410
-_080401FC: .4byte 0x0001bdcc
-_08040200: .4byte 0x0001bdd0
-_08040204: .4byte 0x0001bdd2
-_08040208: .4byte gUnknown_202EE00
-_0804020C: .4byte gUnknown_202EE08
-_08040210: .4byte 0x06001700
-_08040214: .4byte gUnknown_202EE01
-	thumb_func_end sub_8040150
-
 	thumb_func_start sub_8040218
 sub_8040218:
 	push {lr}
diff --git a/include/structs/str_dungeon.h b/include/structs/str_dungeon.h
index c5e73164e..5c4122a78 100644
--- a/include/structs/str_dungeon.h
+++ b/include/structs/str_dungeon.h
@@ -332,6 +332,25 @@ typedef struct unkDungeon57C
 #define UNK12A18_ARR_COUNT 29
 #define UNK12A18_ARR_COUNT_2 9
 
+struct UnkDungeonGlobal_1822C_Sub
+{
+    u8 fill0[0x20];
+};
+
+#define UNK1822C_ARR_COUNT 16
+#define UNK1822C_ARR_COUNT_2 28
+
+struct UnkDungeonGlobal_1822C
+{
+    struct UnkDungeonGlobal_1822C_Sub unk1822C[UNK1822C_ARR_COUNT][UNK1822C_ARR_COUNT_2];
+    u8 unk1BA2C[UNK1822C_ARR_COUNT][UNK1822C_ARR_COUNT_2];
+    u8 fillUnk[0x1e0];
+    s32 unk1BDCC;
+    u8 unk1BDD0;
+    u8 fill1BDD1;
+    u8 unk1BDD2;
+};
+
 // size: 0x1CEDC
 typedef struct Dungeon
 {
@@ -447,8 +466,8 @@ typedef struct Dungeon
     /* 0x17B44 */ OpenedFile *sprites[MONSTER_MAX];
     /* 0x181E4 */ OpenedFile *paletFile;
     /* 0x181E8 */ UnkDungeonGlobal_unk181E8_sub unk181e8;
-    u8 fill18220[0x1BDD4 - 0x1822C];
-    struct UnkStructDungeon1BDD4 unk1BDD4;
+    /* 0x1822C */ struct UnkDungeonGlobal_1822C unk1822C;
+    /* 0x1BDD4 */ struct UnkStructDungeon1BDD4 unk1BDD4;
     /* 0x1BE14 */ struct MessageLogString messageLogStrings[MESSAGE_LOG_STRINGS_COUNT];
     /* 0x1C570 */ DungeonLocation unk1C570;
     /* 0x1C574 */ FloorProperties unk1C574;
diff --git a/src/code_8040094.c b/src/code_8040094.c
index 323f7a101..47e26f463 100644
--- a/src/code_8040094.c
+++ b/src/code_8040094.c
@@ -9,6 +9,8 @@
 #include "dungeon_music.h"
 #include "file_system.h"
 #include "play_time.h"
+#include "cpu.h"
+#include "dungeon.h"
 
 extern s32 gUnknown_80F6568[];
 extern u8 gUnknown_202EE01;
@@ -81,3 +83,34 @@ void sub_8040130(void)
 {
     gUnknown_202EE04 = OpenFileAndGetFileDataPtr(&gUnknown_80F6604, &gDungeonFileArchive);
 }
+
+extern DungeonPos gUnknown_203B410;
+extern u8 gUnknown_202EE00;
+extern void *gUnknown_202EE08;
+
+void sub_8040238(void);
+
+void sub_8040150(bool8 a0)
+{
+    s32 i, j;
+
+    for (i = 0; i < UNK1822C_ARR_COUNT; i++) {
+        for (j = 0; j < UNK1822C_ARR_COUNT_2; j++) {
+            CpuClear(&gDungeon->unk1822C.unk1822C[i][j], sizeof(struct UnkDungeonGlobal_1822C_Sub));
+            gDungeon->unk1822C.unk1BA2C[i][j] = 0;
+        }
+    }
+
+    if (!a0) {
+        gUnknown_203B410.x = 100;
+        gUnknown_203B410.y = 100;
+    }
+
+    gDungeon->unk1822C.unk1BDCC = 0;
+    gDungeon->unk1822C.unk1BDD0 = 1;
+    gDungeon->unk1822C.unk1BDD2 = 0;
+    gUnknown_202EE00 = 1;
+    gUnknown_202EE08 = (void *) VRAM + 0x1700;
+    gUnknown_202EE01 = 1;
+    sub_8040238();
+}