public void handler() {
            ROM_REGION(0x020000, REGION_CPU1);/* 68000 code */
            ROM_LOAD_EVEN("ap-t2.bin", 0x000000, 0x10000, 0x97421047);
            ROM_LOAD_ODD("ap-t1.bin", 0x000000, 0x10000, 0x5c65fe56);

            ROM_REGION(0x18000, REGION_GFX1 | REGIONFLAG_DISPOSE);/* tiles */
            ROM_LOAD("ap-t4.bin", 0x00000, 0x8000, 0x332e58f4);
            ROM_LOAD("ap-t3.bin", 0x08000, 0x8000, 0xdddc122c);
            ROM_LOAD("ap-t5.bin", 0x10000, 0x8000, 0xef5ecd6b);

            ROM_REGION(0x1, REGION_GFX2);/* sprites */

            ROM_END();
        }