public void handler() {
            ROM_REGION(0x10000, REGION_CPU1);/* 64k for code */
            ROM_LOAD("z1", 0x0000, 0x1000, 0x4c28349a);
            ROM_LOAD("zz_d2.bin", 0x1000, 0x1000, 0x326d8d45);
            ROM_LOAD("zz_d4.bin", 0x2000, 0x1000, 0xa94ed92a);
            ROM_LOAD("zz_d3.bin", 0x3000, 0x1000, 0xce5e7a00);

            ROM_REGION(0x2000, REGION_GFX1 | REGIONFLAG_DISPOSE);
            ROM_LOAD("zz_6_h1.bin", 0x0000, 0x0800, 0x780c162a);
            ROM_CONTINUE(0x1000, 0x0800);
            ROM_LOAD("zz_5.bin", 0x0800, 0x0800, 0xf3cdfec5);
            ROM_CONTINUE(0x1800, 0x0800);

            ROM_REGION(0x0020, REGION_PROMS);
            ROM_LOAD("zzbp_e9.bin", 0x0000, 0x0020, 0xaa486dd0);
            ROM_END();
        }