+int mirror_rom_base = 0x01000;
+int mirror_ram_base = 0xf1000;
+int mirror_length = 0x7000;
+
+void
+mem_set_mirror (int rom_base, int ram_base, int length)
+{
+ mirror_rom_base = rom_base;
+ mirror_ram_base = ram_base;
+ mirror_length = length;
+}
+