diff --git a/asm/rom_81700F8.s b/asm/rom_81700F8.s
deleted file mode 100644
index 45c505cd9..000000000
--- a/asm/rom_81700F8.s
+++ /dev/null
@@ -1,64 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start sub_81700F8
-sub_81700F8: @ 81700F8
-	push {r4,r5,lr}
-	ldr r5, =0x04000208
-	ldrh r4, [r5]
-	movs r0, 0
-	strh r0, [r5]
-	movs r0, 0x1
-	bl RegisterRamReset
-	movs r0, 0
-	movs r1, 0x80
-	bl ClearGpuRegBits
-	strh r4, [r5]
-	ldr r1, =gMain
-	ldr r0, =0x00000439
-	adds r1, r0
-	ldrb r2, [r1]
-	movs r0, 0x3
-	negs r0, r0
-	ands r0, r2
-	strb r0, [r1]
-	bl sub_815355C
-	lsls r0, 16
-	lsrs r0, 16
-	bl SetSaveBlocksPointers
-	bl sub_808447C
-	bl ResetSaveCounters
-	movs r0, 0
-	bl sub_81534D0
-	ldr r0, =gSaveFileStatus
-	ldrh r0, [r0]
-	cmp r0, 0
-	beq _08170148
-	cmp r0, 0x2
-	bne _0817014C
-_08170148:
-	bl Sav2_ClearSetDefault
-_0817014C:
-	ldr r0, =gSaveBlock2Ptr
-	ldr r0, [r0]
-	ldrb r0, [r0, 0x15]
-	lsls r0, 31
-	lsrs r0, 31
-	bl SetPokemonCryStereo
-	ldr r0, =0x02000000
-	movs r1, 0xE0
-	lsls r1, 9
-	bl InitHeap
-	ldr r0, =sub_8086230
-	bl SetMainCallback2
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81700F8
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/include/gpu_regs.h b/include/gpu_regs.h
new file mode 100644
index 000000000..2d47d602c
--- /dev/null
+++ b/include/gpu_regs.h
@@ -0,0 +1,15 @@
+//
+// Created by scott on 9/15/2017.
+//
+
+#ifndef POKEEMERALD_GPU_REGS_H
+#define POKEEMERALD_GPU_REGS_H
+
+// Exported type declarations
+
+// Exported RAM declarations
+
+// Exported ROM declarations
+void ClearGpuRegBits(u8 regOffset, u16 mask);
+
+#endif //POKEEMERALD_GPU_REGS_H
diff --git a/include/load_save.h b/include/load_save.h
index 0fedd720b..20848e1a7 100644
--- a/include/load_save.h
+++ b/include/load_save.h
@@ -18,5 +18,6 @@ void SaveSerializedGame(void);
 void LoadSerializedGame(void);
 void LoadPlayerBag(void);
 void SavePlayerBag(void);
+void SetSaveBlocksPointers(u16);
 
 #endif // GUARD_LOAD_SAVE_H
diff --git a/include/malloc.h b/include/malloc.h
index bd870ede3..d26d19242 100644
--- a/include/malloc.h
+++ b/include/malloc.h
@@ -1,8 +1,11 @@
 #ifndef GUARD_MALLOC_H
 #define GUARD_MALLOC_H
 
+extern u8 gHeap[];
+
 void *Alloc(u32 size);
 void *AllocZeroed(u32 size);
 void Free(void *pointer);
+void InitHeap(void *pointer, u32 size);
 
 #endif // GUARD_MALLOC_H
diff --git a/include/new_game.h b/include/new_game.h
index f9ad7fcb8..060279c25 100644
--- a/include/new_game.h
+++ b/include/new_game.h
@@ -9,5 +9,7 @@ void ClearPokedexFlags(void);
 void WarpToTruck(void);
 void NewGameInitData(void);
 void ResetMiniGamesResults(void);
+void sub_808447C(void);
+void Sav2_ClearSetDefault(void);
 
 #endif // GUARD_NEW_GAME_H
diff --git a/include/rom4.h b/include/rom4.h
new file mode 100644
index 000000000..1538f5dbc
--- /dev/null
+++ b/include/rom4.h
@@ -0,0 +1,15 @@
+//
+// Created by scott on 9/15/2017.
+//
+
+#ifndef POKEEMERALD_ROM4_H
+#define POKEEMERALD_ROM4_H
+
+// Exported type declarations
+
+// Exported RAM declarations
+
+// Exported ROM declarations
+void sub_8086230(void);
+
+#endif //POKEEMERALD_ROM4_H
diff --git a/include/save.h b/include/save.h
index 1d7fdd6e3..e98233c67 100644
--- a/include/save.h
+++ b/include/save.h
@@ -1,6 +1,8 @@
 #ifndef GUARD_SAVE_H
 #define GUARD_SAVE_H
 
+extern u16 gSaveFileStatus;
+
 struct SaveSectionLocation
 {
     void *data;
@@ -88,5 +90,7 @@ u16 CalculateChecksum(void *, u16);
 //u8 unref_sub_8125FF0(u8 *data, u16 size);
 //u8 unref_sub_8126068(u8 sector, u8 *data, u32 size);
 //u8 unref_sub_8126080(u8 sector, u8 *data);
+u16 sub_815355C(void);
+u8 sub_81534D0(u8);
 
 #endif // GUARD_SAVE_H
diff --git a/ld_script.txt b/ld_script.txt
index 4a5bb643a..e8c8a43ce 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -206,7 +206,7 @@ SECTIONS {
         asm/battle_controller_wally.o(.text);
         asm/player_pc.o(.text);
         asm/intro.o(.text);
-        asm/rom_81700F8.o(.text);
+        src/rom_81700F8.o(.text);
         asm/field_region_map.o(.text);
         asm/battle_anim_8170478.o(.text);
         asm/hall_of_fame.o(.text);
diff --git a/src/rom_81700F8.c b/src/rom_81700F8.c
new file mode 100644
index 000000000..b786ff9f8
--- /dev/null
+++ b/src/rom_81700F8.c
@@ -0,0 +1,32 @@
+#include "global.h"
+#include "main.h"
+#include "gpu_regs.h"
+#include "m4a.h"
+#include "load_save.h"
+#include "save.h"
+#include "new_game.h"
+#include "rom4.h"
+#include "malloc.h"
+
+void sub_81700F8(void)
+{
+    u16 imeBackup;
+
+    imeBackup = REG_IME;
+    REG_IME = 0;
+    RegisterRamReset(0x00000001);
+    ClearGpuRegBits(REG_OFFSET_DISPCNT, 0x80);
+    REG_IME = imeBackup;
+    gMain.inBattle = FALSE;
+    SetSaveBlocksPointers(sub_815355C());
+    sub_808447C();
+    ResetSaveCounters();
+    sub_81534D0(0);
+    if (gSaveFileStatus == 0 || gSaveFileStatus == 2)
+    {
+        Sav2_ClearSetDefault();
+    }
+    SetPokemonCryStereo(gSaveBlock2Ptr->optionsSound);
+    InitHeap(gHeap, 0x1c000);
+    SetMainCallback2(sub_8086230);
+}