public void handler() {
            ROM_REGION(0x10000, REGION_CPU1);/* 64k for code */
            ROM_LOAD("galmidw.u", 0x0000, 0x0800, 0x745e2d61);
            ROM_LOAD("galmidw.v", 0x0800, 0x0800, 0x9c999a40);
            ROM_LOAD("galmidw.w", 0x1000, 0x0800, 0xb5894925);
            ROM_LOAD("galmidw.y", 0x1800, 0x0800, 0x6b3ca10b);
            ROM_LOAD("galmidw.z", 0x2000, 0x0800, 0xcb24f797);

            ROM_REGION(0x1000, REGION_GFX1 | REGIONFLAG_DISPOSE);
            ROM_LOAD("galmidw.1j", 0x0000, 0x0800, 0x84decf98);
            ROM_LOAD("galmidw.1k", 0x0800, 0x0800, 0xc31ada9e);

            ROM_REGION(0x0020, REGION_PROMS);
            ROM_LOAD("galaxian.clr", 0x0000, 0x0020, 0xc3ac9467);
            ROM_END();
        }