+extern u32 m68k_read8(u32 a);
+extern u32 m68k_read16(u32 a);
+extern void m68k_write8(u32 a, u8 d);
+extern void m68k_write16(u32 a, u16 d);
+
+// z80
+#define Z80_MEM_SHIFT 13
+extern uptr z80_read_map [0x10000 >> Z80_MEM_SHIFT];
+extern uptr z80_write_map[0x10000 >> Z80_MEM_SHIFT];
+typedef unsigned char (z80_read_f)(unsigned short a);
+typedef void (z80_write_f)(unsigned int a, unsigned char data);
+
+void z80_map_set(uptr *map, int start_addr, int end_addr,
+ const void *func_or_mh, int is_func);
+void cpu68k_map_set(uptr *map, int start_addr, int end_addr,
+ const void *func_or_mh, int is_func);
+void cpu68k_map_all_ram(int start_addr, int end_addr, void *ptr, int is_sub);
+void m68k_map_unmap(int start_addr, int end_addr);
+
+#define MAP_FLAG ((uptr)1 << (sizeof(uptr) * 8 - 1))
+#define map_flag_set(x) ((x) & MAP_FLAG)
+