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("7l", 0x2000, 0x0800, 0x1b933207);

            ROM_REGION(0x1000, REGION_GFX1 | REGIONFLAG_DISPOSE);
            ROM_LOAD("1h", 0x0000, 0x0800, 0x39fb43a4);
            ROM_LOAD("1k", 0x0800, 0x0800, 0x7e3f56a2);

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