public void handler() {
            ROM_REGION(0x10000, REGION_CPU1);/* 64k for code */

            ROM_LOAD("yf-a-3p", 0x0000, 0x2000, 0x4586114f);
            ROM_LOAD("yf-a-3n", 0x2000, 0x2000, 0x947fa760);
            ROM_LOAD("yf-a-3m", 0x4000, 0x2000, 0xd4975633);

            ROM_REGION(0x10000, REGION_CPU2);/* 64k for sound cpu */

            ROM_LOAD("yf-s-3b", 0x8000, 0x2000, 0x0392a60c);
            ROM_LOAD("yf-s-1b", 0xa000, 0x2000, 0x6588f41a);
            ROM_LOAD("yf-s-3a", 0xc000, 0x2000, 0xbd054e44);
            ROM_LOAD("yf-s-1a", 0xe000, 0x2000, 0x2490d4c3);

            ROM_REGION(0x06000, REGION_GFX1 | REGIONFLAG_DISPOSE);
            ROM_LOAD("yf-a-3e", 0x00000, 0x2000, 0x77e9e9cc);/* chars */

            ROM_LOAD("yf-a-3d", 0x02000, 0x2000, 0x854d5ff4);
            ROM_LOAD("yf-a-3c", 0x04000, 0x2000, 0x0cd8ffad);

            ROM_REGION(0x0c000, REGION_GFX2 | REGIONFLAG_DISPOSE);
            ROM_LOAD("yf-b-5b", 0x00000, 0x2000, 0x1299ae30);/* sprites */

            ROM_LOAD("yf-b-5c", 0x02000, 0x2000, 0x8708b888);
            ROM_LOAD("yf-b-5f", 0x04000, 0x2000, 0xd9bb8ab8);
            ROM_LOAD("yf-b-5e", 0x06000, 0x2000, 0x47077e8d);
            ROM_LOAD("yf-b-5j", 0x08000, 0x2000, 0x713ef31f);
            ROM_LOAD("yf-b-5k", 0x0a000, 0x2000, 0xf49651cc);

            ROM_REGION(0x0520, REGION_PROMS);
            ROM_LOAD("yard.1c", 0x0000, 0x0100, 0x08fa5103);/* chars palette low 4 bits */

            ROM_LOAD("yard.1d", 0x0100, 0x0100, 0x7c04994c);/* chars palette high 4 bits */

            ROM_LOAD("yard.1f", 0x0200, 0x0020, 0xb8554da5);/* sprites palette */

            ROM_LOAD("yard.2h", 0x0220, 0x0100, 0xe1cdfb06);/* sprites lookup table */

            ROM_LOAD("yard.2n", 0x0320, 0x0100, 0xcd85b646);/* radar palette low 4 bits */

            ROM_LOAD("yard.2m", 0x0420, 0x0100, 0x45384397);/* radar palette high 4 bits */

            ROM_END();
        }