diff --git a/include/Famicom/famicom.h b/include/Famicom/famicom.h
index 433c4a68..d72ed0ac 100644
--- a/include/Famicom/famicom.h
+++ b/include/Famicom/famicom.h
@@ -2,6 +2,7 @@
 #define FAMICOM_H
 
 #include "types.h"
+#include "Famicom/ks_nes.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -37,8 +38,34 @@ typedef struct memcard_game_header_s {
   u16 pad;
 } MemcardGameHeader_t;
 
+/* sizeof (FamicomCommon) == 0xB8 */
 typedef struct famicom_common_s {
-
+  /* 0x00 */ ksNesCommonWorkObj* wp;
+  /* 0x04 */ ksNesStateObj* sp;
+  /* 0x08 */ u8* nesromp;
+  /* 0x0C */ u8* chrramp;
+  /* 0x10 */ u8* bbramp;
+  /* 0x14 */ u8* noise_bufp;
+  /* 0x18 */ u8* chr_to_i8_bufp;
+  /* 0x1C */ u8* result_bufp;
+  /* 0x20 */ u8* highscore_flagsp;
+  /* 0x24 */ u8* nesinfo_tagsp;
+  /* 0x28 */ int _28;
+  /* 0x2C */ u8 player_no;
+  /* 0x2D */ u8 _2d;
+  /* 0x2E */ u8 _2e;
+  /* 0x2F */ u8 mura_save_name[33];
+  /* 0x50 */ u8 famicom_save_name[33];
+  /* 0x74 */ FamicomSaveDataHeader* save_data_header;
+  /* 0x78 */ int _78;
+  /* 0x7C */ size_t save_data_header_size;
+  /* 0x80 */ size_t _80;
+  /* 0x84 */ int _84;
+  /* 0x88 */ u8* _88;
+  /* 0x8C */ u16 _8C;
+  /* 0x8E */ MemcardGameHeader_t memcard_game_header;
+  /* 0xB0 */ u8* memcard_save_comment;
+  /* 0xB4 */ int _b4;
 } FamicomCommon;
 
 typedef u8 (*FAMICOM_GETSAVECHAN_PROC)(int* player_no, int* slot_card_result);