diff --git a/asm/include/main_02051098.inc b/asm/include/main_02051098.inc
index f07dd47a..5b44259f 100644
--- a/asm/include/main_02051098.inc
+++ b/asm/include/main_02051098.inc
@@ -2,17 +2,11 @@
 .public CopyBitsFrom
 .public CopyBitsTo
 .public DUNGEON_RESTRICTIONS
-.public DungeonFloorToGroupFloor
-.public GetItemIdFromList
-.public GetNbFloorsPlusOne
-.public MISSION_FLOORS_FORBIDDEN
-.public RandIntSafe
 .public _020A0C68
 .public _020A0C69
 .public _020A0C6A
 .public _020A0C6C
 .public _020A0C6E
-.public _020A1864
 .public _020AFF7C
 .public _020AFF80
 .public _020AFF88
diff --git a/asm/include/main_02051504.inc b/asm/include/main_02051504.inc
new file mode 100644
index 00000000..3bea2e2a
--- /dev/null
+++ b/asm/include/main_02051504.inc
@@ -0,0 +1,10 @@
+#pragma once
+.public CopyBitsFrom
+.public CopyBitsTo
+.public DUNGEON_RESTRICTIONS
+.public DungeonFloorToGroupFloor
+.public GetItemIdFromList
+.public GetNbFloorsPlusOne
+.public MISSION_FLOORS_FORBIDDEN
+.public RandIntSafe
+.public _020A1864
diff --git a/asm/main_02051098.s b/asm/main_02051098.s
index 3627308d..1ad20fe6 100644
--- a/asm/main_02051098.s
+++ b/asm/main_02051098.s
@@ -370,240 +370,3 @@ _020514A8:
 	and r0, r0, #0xff
 	bx lr
 	arm_func_end JoinedAtRangeCheck
-
-	arm_func_start IsDojoDungeon
-IsDojoDungeon: ; 0x020514B0
-	cmp r0, #0xb4
-	blo _020514C4
-	cmp r0, #0xd3
-	movls r0, #1
-	bxls lr
-_020514C4:
-	mov r0, #0
-	bx lr
-	arm_func_end IsDojoDungeon
-
-	arm_func_start IsFutureDungeon
-IsFutureDungeon: ; 0x020514CC
-	cmp r0, #0x1b
-	blo _020514E0
-	cmp r0, #0x21
-	movls r0, #1
-	bxls lr
-_020514E0:
-	mov r0, #0
-	bx lr
-	arm_func_end IsFutureDungeon
-
-	arm_func_start IsSpecialEpisodeDungeon
-IsSpecialEpisodeDungeon: ; 0x020514E8
-	cmp r0, #0x7b
-	blo _020514FC
-	cmp r0, #0xa4
-	movls r0, #1
-	bxls lr
-_020514FC:
-	mov r0, #0
-	bx lr
-	arm_func_end IsSpecialEpisodeDungeon
-
-	arm_func_start RetrieveFromItemList1
-RetrieveFromItemList1: ; 0x02051504
-	stmdb sp!, {r3, r4, r5, r6, r7, lr}
-	mov r7, r0
-	ldr r0, _02051564 ; =0x0000270F
-	mov r6, r1
-	bl RandIntSafe
-	mov r4, r0
-	ldr r0, _02051564 ; =0x0000270F
-	bl RandIntSafe
-	mov r5, r0
-	ldrb r0, [r7]
-	cmp r0, #0xb4
-	cmphs r0, #0xd3
-	movhs r0, #0x55
-	ldmhsia sp!, {r3, r4, r5, r6, r7, pc}
-	bl GetNbFloorsPlusOne
-	ldrb r1, [r7, #1]
-	cmp r1, r0
-	movhs r0, #0x55
-	ldmhsia sp!, {r3, r4, r5, r6, r7, pc}
-	mov r0, r6
-	mov r1, r4
-	mov r2, r5
-	bl GetItemIdFromList
-	ldmia sp!, {r3, r4, r5, r6, r7, pc}
-	.align 2, 0
-_02051564: .word 0x0000270F
-	arm_func_end RetrieveFromItemList1
-
-	arm_func_start IsForbiddenFloor
-IsForbiddenFloor: ; 0x02051568
-	stmdb sp!, {r3, lr}
-	mov r1, r0
-	add r0, sp, #0
-	bl DungeonFloorToGroupFloor
-	ldrb ip, [sp]
-	ldrb lr, [sp, #1]
-	ldr r1, _020515C0 ; =MISSION_FLOORS_FORBIDDEN
-	mov r3, #0
-_02051588:
-	ldrb r0, [r1, r3, lsl #1]
-	mov r2, r3, lsl #1
-	cmp r0, #0x64
-	beq _020515B8
-	cmp ip, r0
-	addeq r0, r1, r2
-	ldreqb r0, [r0, #1]
-	cmpeq lr, r0
-	moveq r0, #1
-	ldmeqia sp!, {r3, pc}
-	add r3, r3, #1
-	b _02051588
-_020515B8:
-	mov r0, #0
-	ldmia sp!, {r3, pc}
-	.align 2, 0
-_020515C0: .word MISSION_FLOORS_FORBIDDEN
-	arm_func_end IsForbiddenFloor
-
-	arm_func_start sub_020515C4
-sub_020515C4: ; 0x020515C4
-	stmdb sp!, {r3, r4, r5, lr}
-	mov r5, r0
-	mov r4, r1
-	mov r2, #8
-	bl CopyBitsTo
-	mov r0, r5
-	add r1, r4, #1
-	mov r2, #8
-	bl CopyBitsTo
-	ldmia sp!, {r3, r4, r5, pc}
-	arm_func_end sub_020515C4
-
-	arm_func_start Copy16BitsFrom
-Copy16BitsFrom: ; 0x020515EC
-	stmdb sp!, {r3, r4, r5, lr}
-	mov r4, r1
-	mov r3, #0
-	strb r3, [r4]
-	mov r5, r0
-	mov r2, #8
-	strb r3, [r4, #1]
-	bl CopyBitsFrom
-	mov r0, r5
-	add r1, r4, #1
-	mov r2, #8
-	bl CopyBitsFrom
-	ldmia sp!, {r3, r4, r5, pc}
-	arm_func_end Copy16BitsFrom
-
-	arm_func_start sub_02051620
-sub_02051620: ; 0x02051620
-	stmdb sp!, {r3, r4, r5, lr}
-	mov r5, r0
-	mov r4, r1
-	mov r2, #7
-	bl CopyBitsTo
-	mov r0, r5
-	add r1, r4, #1
-	mov r2, #7
-	bl CopyBitsTo
-	ldmia sp!, {r3, r4, r5, pc}
-	arm_func_end sub_02051620
-
-	arm_func_start sub_02051648
-sub_02051648: ; 0x02051648
-	stmdb sp!, {r3, r4, r5, lr}
-	mov r4, r1
-	mov r3, #0
-	strb r3, [r4]
-	mov r5, r0
-	mov r2, #7
-	strb r3, [r4, #1]
-	bl CopyBitsFrom
-	mov r0, r5
-	add r1, r4, #1
-	mov r2, #7
-	bl CopyBitsFrom
-	ldmia sp!, {r3, r4, r5, pc}
-	arm_func_end sub_02051648
-
-	arm_func_start RetrieveFromItemList2
-RetrieveFromItemList2: ; 0x0205167C
-	stmdb sp!, {r3, r4, r5, r6, r7, lr}
-	mov r7, r0
-	ldr r0, _020516D8 ; =0x0000270F
-	mov r6, r1
-	bl RandIntSafe
-	mov r5, r0
-	ldr r0, _020516D8 ; =0x0000270F
-	bl RandIntSafe
-	mov r4, r0
-	ldrb r0, [r7]
-	cmp r0, #0xb4
-	movhs r0, #0x55
-	ldmhsia sp!, {r3, r4, r5, r6, r7, pc}
-	bl GetNbFloorsPlusOne
-	ldrb r1, [r7, #1]
-	cmp r1, r0
-	movhs r0, #0x55
-	ldmhsia sp!, {r3, r4, r5, r6, r7, pc}
-	mov r0, r6
-	mov r1, r5
-	mov r2, r4
-	bl GetItemIdFromList
-	ldmia sp!, {r3, r4, r5, r6, r7, pc}
-	.align 2, 0
-_020516D8: .word 0x0000270F
-	arm_func_end RetrieveFromItemList2
-
-	arm_func_start IsInvalidForMission
-IsInvalidForMission: ; 0x020516DC
-	cmp r0, #0xb4
-	movhs r0, #1
-	bxhs lr
-	mov r2, #0
-	ldr r1, _02051718 ; =_020A1864
-	b _02051704
-_020516F4:
-	cmp r3, r0
-	moveq r0, #1
-	bxeq lr
-	add r2, r2, #1
-_02051704:
-	ldrb r3, [r1, r2]
-	cmp r3, #0xb4
-	bne _020516F4
-	mov r0, #0
-	bx lr
-	.align 2, 0
-_02051718: .word _020A1864
-	arm_func_end IsInvalidForMission
-
-	arm_func_start IsExpEnabledInDungeon
-IsExpEnabledInDungeon: ; 0x0205171C
-	mov r1, #0xc
-	mul r1, r0, r1
-	ldr r0, _02051740 ; =DUNGEON_RESTRICTIONS
-	ldr r0, [r0, r1]
-	tst r0, #4
-	movne r0, #1
-	moveq r0, #0
-	and r0, r0, #0xff
-	bx lr
-	.align 2, 0
-_02051740: .word DUNGEON_RESTRICTIONS
-	arm_func_end IsExpEnabledInDungeon
-
-	arm_func_start IsSkyExclusiveDungeon
-IsSkyExclusiveDungeon: ; 0x02051744
-	cmp r0, #0x67
-	blo _02051758
-	cmp r0, #0xb0
-	movls r0, #1
-	bxls lr
-_02051758:
-	mov r0, #0
-	bx lr
-	arm_func_end IsSkyExclusiveDungeon
diff --git a/asm/main_02051504.s b/asm/main_02051504.s
new file mode 100644
index 00000000..b333d795
--- /dev/null
+++ b/asm/main_02051504.s
@@ -0,0 +1,205 @@
+	.include "asm/macros.inc"
+	.include "main_02051504.inc"
+
+	.text
+
+	arm_func_start RetrieveFromItemList1
+RetrieveFromItemList1: ; 0x02051504
+	stmdb sp!, {r3, r4, r5, r6, r7, lr}
+	mov r7, r0
+	ldr r0, _02051564 ; =0x0000270F
+	mov r6, r1
+	bl RandIntSafe
+	mov r4, r0
+	ldr r0, _02051564 ; =0x0000270F
+	bl RandIntSafe
+	mov r5, r0
+	ldrb r0, [r7]
+	cmp r0, #0xb4
+	cmphs r0, #0xd3
+	movhs r0, #0x55
+	ldmhsia sp!, {r3, r4, r5, r6, r7, pc}
+	bl GetNbFloorsPlusOne
+	ldrb r1, [r7, #1]
+	cmp r1, r0
+	movhs r0, #0x55
+	ldmhsia sp!, {r3, r4, r5, r6, r7, pc}
+	mov r0, r6
+	mov r1, r4
+	mov r2, r5
+	bl GetItemIdFromList
+	ldmia sp!, {r3, r4, r5, r6, r7, pc}
+	.align 2, 0
+_02051564: .word 0x0000270F
+	arm_func_end RetrieveFromItemList1
+
+	arm_func_start IsForbiddenFloor
+IsForbiddenFloor: ; 0x02051568
+	stmdb sp!, {r3, lr}
+	mov r1, r0
+	add r0, sp, #0
+	bl DungeonFloorToGroupFloor
+	ldrb ip, [sp]
+	ldrb lr, [sp, #1]
+	ldr r1, _020515C0 ; =MISSION_FLOORS_FORBIDDEN
+	mov r3, #0
+_02051588:
+	ldrb r0, [r1, r3, lsl #1]
+	mov r2, r3, lsl #1
+	cmp r0, #0x64
+	beq _020515B8
+	cmp ip, r0
+	addeq r0, r1, r2
+	ldreqb r0, [r0, #1]
+	cmpeq lr, r0
+	moveq r0, #1
+	ldmeqia sp!, {r3, pc}
+	add r3, r3, #1
+	b _02051588
+_020515B8:
+	mov r0, #0
+	ldmia sp!, {r3, pc}
+	.align 2, 0
+_020515C0: .word MISSION_FLOORS_FORBIDDEN
+	arm_func_end IsForbiddenFloor
+
+	arm_func_start sub_020515C4
+sub_020515C4: ; 0x020515C4
+	stmdb sp!, {r3, r4, r5, lr}
+	mov r5, r0
+	mov r4, r1
+	mov r2, #8
+	bl CopyBitsTo
+	mov r0, r5
+	add r1, r4, #1
+	mov r2, #8
+	bl CopyBitsTo
+	ldmia sp!, {r3, r4, r5, pc}
+	arm_func_end sub_020515C4
+
+	arm_func_start Copy16BitsFrom
+Copy16BitsFrom: ; 0x020515EC
+	stmdb sp!, {r3, r4, r5, lr}
+	mov r4, r1
+	mov r3, #0
+	strb r3, [r4]
+	mov r5, r0
+	mov r2, #8
+	strb r3, [r4, #1]
+	bl CopyBitsFrom
+	mov r0, r5
+	add r1, r4, #1
+	mov r2, #8
+	bl CopyBitsFrom
+	ldmia sp!, {r3, r4, r5, pc}
+	arm_func_end Copy16BitsFrom
+
+	arm_func_start sub_02051620
+sub_02051620: ; 0x02051620
+	stmdb sp!, {r3, r4, r5, lr}
+	mov r5, r0
+	mov r4, r1
+	mov r2, #7
+	bl CopyBitsTo
+	mov r0, r5
+	add r1, r4, #1
+	mov r2, #7
+	bl CopyBitsTo
+	ldmia sp!, {r3, r4, r5, pc}
+	arm_func_end sub_02051620
+
+	arm_func_start sub_02051648
+sub_02051648: ; 0x02051648
+	stmdb sp!, {r3, r4, r5, lr}
+	mov r4, r1
+	mov r3, #0
+	strb r3, [r4]
+	mov r5, r0
+	mov r2, #7
+	strb r3, [r4, #1]
+	bl CopyBitsFrom
+	mov r0, r5
+	add r1, r4, #1
+	mov r2, #7
+	bl CopyBitsFrom
+	ldmia sp!, {r3, r4, r5, pc}
+	arm_func_end sub_02051648
+
+	arm_func_start RetrieveFromItemList2
+RetrieveFromItemList2: ; 0x0205167C
+	stmdb sp!, {r3, r4, r5, r6, r7, lr}
+	mov r7, r0
+	ldr r0, _020516D8 ; =0x0000270F
+	mov r6, r1
+	bl RandIntSafe
+	mov r5, r0
+	ldr r0, _020516D8 ; =0x0000270F
+	bl RandIntSafe
+	mov r4, r0
+	ldrb r0, [r7]
+	cmp r0, #0xb4
+	movhs r0, #0x55
+	ldmhsia sp!, {r3, r4, r5, r6, r7, pc}
+	bl GetNbFloorsPlusOne
+	ldrb r1, [r7, #1]
+	cmp r1, r0
+	movhs r0, #0x55
+	ldmhsia sp!, {r3, r4, r5, r6, r7, pc}
+	mov r0, r6
+	mov r1, r5
+	mov r2, r4
+	bl GetItemIdFromList
+	ldmia sp!, {r3, r4, r5, r6, r7, pc}
+	.align 2, 0
+_020516D8: .word 0x0000270F
+	arm_func_end RetrieveFromItemList2
+
+	arm_func_start IsInvalidForMission
+IsInvalidForMission: ; 0x020516DC
+	cmp r0, #0xb4
+	movhs r0, #1
+	bxhs lr
+	mov r2, #0
+	ldr r1, _02051718 ; =_020A1864
+	b _02051704
+_020516F4:
+	cmp r3, r0
+	moveq r0, #1
+	bxeq lr
+	add r2, r2, #1
+_02051704:
+	ldrb r3, [r1, r2]
+	cmp r3, #0xb4
+	bne _020516F4
+	mov r0, #0
+	bx lr
+	.align 2, 0
+_02051718: .word _020A1864
+	arm_func_end IsInvalidForMission
+
+	arm_func_start IsExpEnabledInDungeon
+IsExpEnabledInDungeon: ; 0x0205171C
+	mov r1, #0xc
+	mul r1, r0, r1
+	ldr r0, _02051740 ; =DUNGEON_RESTRICTIONS
+	ldr r0, [r0, r1]
+	tst r0, #4
+	movne r0, #1
+	moveq r0, #0
+	and r0, r0, #0xff
+	bx lr
+	.align 2, 0
+_02051740: .word DUNGEON_RESTRICTIONS
+	arm_func_end IsExpEnabledInDungeon
+
+	arm_func_start IsSkyExclusiveDungeon
+IsSkyExclusiveDungeon: ; 0x02051744
+	cmp r0, #0x67
+	blo _02051758
+	cmp r0, #0xb0
+	movls r0, #1
+	bxls lr
+_02051758:
+	mov r0, #0
+	bx lr
+	arm_func_end IsSkyExclusiveDungeon
diff --git a/include/main_020514CC.h b/include/main_020514CC.h
new file mode 100644
index 00000000..06651df7
--- /dev/null
+++ b/include/main_020514CC.h
@@ -0,0 +1,9 @@
+#ifndef PMDSKY_MAIN_020514CC_H
+#define PMDSKY_MAIN_020514CC_H
+#include "util.h"
+
+bool32 IsDojoDungeon(u8 dungeon_id);
+bool32 IsFutureDungeon(u8 dungeon_id);
+bool32 IsSpecialEpisodeDungeon(u8 dungeon_id);
+
+#endif //PMDSKY_MAIN_020514CC_H
diff --git a/main.lsf b/main.lsf
index a246a52d..61b63856 100644
--- a/main.lsf
+++ b/main.lsf
@@ -57,6 +57,8 @@ Static main
 	Object asm/main_0204B018.o
 	Object src/number_util.o
 	Object asm/main_02051098.o
+	Object src/main_020514CC.o
+	Object asm/main_02051504.o
 	Object src/main_02051760.o
 	Object asm/main_02051788.o
 	Object src/main_02052874.o
diff --git a/src/main_020514CC.c b/src/main_020514CC.c
new file mode 100644
index 00000000..7d891132
--- /dev/null
+++ b/src/main_020514CC.c
@@ -0,0 +1,17 @@
+#include "main_020514CC.h"
+#include "util.h"
+#include "enums.h"
+
+bool32 IsDojoDungeon(u8 dungeon_id)
+{
+    return dungeon_id >= DUNGEON_NORMAL_FLY_MAZE && dungeon_id <= DUNGEON_DOJO_0xD3;
+}
+
+bool32 IsFutureDungeon(u8 dungeon_id) {
+    return dungeon_id >= DUNGEON_CHASM_CAVE && dungeon_id <= DUNGEON_DEEP_DUSK_FOREST;
+}
+
+
+bool32 IsSpecialEpisodeDungeon(u8 dungeon_id) {
+    return dungeon_id >= DUNGEON_STAR_CAVE_SE1 && dungeon_id <= DUNGEON_SPRING_CAVE_PIT;
+}