diff --git a/include/Famicom/famicom.h b/include/Famicom/famicom.h
index c0795e2a..433c4a68 100644
--- a/include/Famicom/famicom.h
+++ b/include/Famicom/famicom.h
@@ -7,8 +7,41 @@
 extern "C" {
 #endif
 
-typedef u8 (*FAMICOM_GETSAVECHAN_PROC)(int* player_no, int* slot_card_result);
+typedef void* (*MALLOC_ALIGN_FUNC)(size_t size, u32 align);
+typedef void (*MALLOC_FREE_FUNC)(void* ptr);
+typedef size_t (*MALLOC_GETMEMBLOCKSIZE_FUNC)(void* ptr);
+typedef size_t (*MALLOC_GETTOTALFREESIZE_FUNC)();
+ 
+typedef struct malloc_s {
+  MALLOC_ALIGN_FUNC malloc_align;
+  MALLOC_FREE_FUNC free;
+  MALLOC_GETMEMBLOCKSIZE_FUNC getmemblocksize;
+  MALLOC_GETTOTALFREESIZE_FUNC gettotalfreesize;
+} Famicom_MallocInfo;
 
+typedef struct save_data_header_s {
+  u8 _temp[0x19C0];
+} FamicomSaveDataHeader;
+
+typedef struct memcard_game_header_s {
+  u8 _00;
+  u8 _01;
+  u8 mori_name[16];
+  u16 nesrom_size;
+  u16 nestags_size;
+  u16 icon_format;
+  u16 icon_flags;
+  u16 banner_size;
+  u8 flags0;
+  u8 flags1;
+  u16 pad;
+} MemcardGameHeader_t;
+
+typedef struct famicom_common_s {
+
+} FamicomCommon;
+
+typedef u8 (*FAMICOM_GETSAVECHAN_PROC)(int* player_no, int* slot_card_result);
 extern void famicom_setCallback_getSaveChan(FAMICOM_GETSAVECHAN_PROC getSaveChan_proc);
 
 #ifdef __cplusplus
diff --git a/include/Famicom/ks_nes.h b/include/Famicom/ks_nes.h
new file mode 100644
index 00000000..2bc8f482
--- /dev/null
+++ b/include/Famicom/ks_nes.h
@@ -0,0 +1,9 @@
+#ifndef KS_NES_H
+#define KS_NES_H
+
+#include "types.h"
+#include "Famicom/ks_nes_common.h"
+#include "Famicom/ks_nes_core.h"
+#include "Famicom/ks_nes_draw.h"
+
+#endif
diff --git a/include/Famicom/ks_nes_common.h b/include/Famicom/ks_nes_common.h
new file mode 100644
index 00000000..daa108d8
--- /dev/null
+++ b/include/Famicom/ks_nes_common.h
@@ -0,0 +1,37 @@
+#ifndef KS_NES_COMMON_H
+#define KS_NES_COMMON_H
+
+#include "types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CHR_TO_I8_BUF_SIZE 0x100000
+#define KS_NES_NESFILE_HEADER_SIZE 0x10
+#define KS_NES_PRGROM_SIZE 0x8000 // not certain, generally 32kb (0x8000)
+#define KS_NES_CHRROM_SIZE 0x4000 // not certain, usually only 8kb (0x2000)
+
+#define KS_NES_CHRRAM_SIZE 0x2000 // 8kb
+#define KS_NES_BBRAM_SIZE 0x8000 // 32kb, battery backed-up ram
+#define KS_NES_NOISE_DATA_SIZE 0x7F000
+#define KS_NES_DRAW_RESULT_SIZE 0x1C800
+
+#define KS_NES_SAVE_DATA_HEADER_SIZE
+
+#define KS_NES_BYTES_PER_KB (1024)
+#define KS_NES_TO_KB(b) ((f32)b / (1.0f / (f32)KS_NES_BYTES_PER_KB))
+
+typedef struct ks_nes_common_work_obj_s {
+  u8 _temp[0x8F78];
+} ksNesCommonWorkObj;
+
+typedef struct ks_nes_state_obj_s {
+  u8 _temp[0x1A78];
+} ksNesStateObj;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/include/Famicom/ks_nes_core.h b/include/Famicom/ks_nes_core.h
new file mode 100644
index 00000000..3f6c0899
--- /dev/null
+++ b/include/Famicom/ks_nes_core.h
@@ -0,0 +1,17 @@
+#ifndef KS_NES_CORE_H
+#define KS_NES_CORE_H
+
+#include "types.h"
+#include "Famicom/ks_nes_common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/include/Famicom/ks_nes_draw.h b/include/Famicom/ks_nes_draw.h
new file mode 100644
index 00000000..79c27e85
--- /dev/null
+++ b/include/Famicom/ks_nes_draw.h
@@ -0,0 +1,17 @@
+#ifndef KS_NES_DRAW_H
+#define KS_NES_DRAW_H
+
+#include "types.h"
+#include "Famicom/ks_nes_common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif