public void handler() {
            ROM_REGION(0x10000, REGION_CPU1);/* 64k for code */
            ROM_LOAD("orbitron.3", 0x0600, 0x0200, 0x419f9c9b);
            ROM_CONTINUE(0x0400, 0x0200);
            ROM_CONTINUE(0x0200, 0x0200);
            ROM_CONTINUE(0x0000, 0x0200);
            ROM_LOAD("orbitron.4", 0x0e00, 0x0200, 0x44ad56ac);
            ROM_CONTINUE(0x0c00, 0x0200);
            ROM_CONTINUE(0x0a00, 0x0200);
            ROM_CONTINUE(0x0800, 0x0200);
            ROM_LOAD("orbitron.1", 0x1600, 0x0200, 0xda3f5168);
            ROM_CONTINUE(0x1400, 0x0200);
            ROM_CONTINUE(0x1200, 0x0200);
            ROM_CONTINUE(0x1000, 0x0200);
            ROM_LOAD("orbitron.2", 0x1e00, 0x0200, 0xa3b813fc);
            ROM_CONTINUE(0x1c00, 0x0200);
            ROM_CONTINUE(0x1a00, 0x0200);
            ROM_CONTINUE(0x1800, 0x0200);
            ROM_LOAD("orbitron.5", 0x2000, 0x0800, 0x20cd8bb8);

            ROM_REGION(0x1000, REGION_GFX1 | REGIONFLAG_DISPOSE);
            ROM_LOAD("orbitron.6", 0x0000, 0x0800, 0x2c91b83f);
            ROM_LOAD("orbitron.7", 0x0800, 0x0800, 0x46f4cca4);

            ROM_REGION(0x0020, REGION_PROMS);
            ROM_LOAD("l06_prom.bin", 0x0000, 0x0020, 0x6a0c7d87);
            ROM_END();
        }