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

            ROM_LOAD("btj_p01.bin", 0x0000, 0x10000, 0xeda75f36);

            ROM_REGION(0x10000, REGION_CPU2);/* 64k for cpuB code */

            ROM_LOAD("bt_p2.rom", 0x00000, 0x10000, 0x0e193265);

            ROM_REGION(0x10000, REGION_CPU3);/* 64k for sound code */

            ROM_LOAD("btj_p03.bin", 0x00000, 0x10000, 0xfea8a096);   /* YM3526 */

            ROM_REGION(0x1400, REGION_PROMS);
            ROM_LOAD("btj_01r.prm", 0x0000, 0x0400, 0xf4b54d06);/* red */

            ROM_LOAD("btj_02g.prm", 0x0400, 0x0400, 0xbaac139e);/* green */

            ROM_LOAD("btj_03b.prm", 0x0800, 0x0400, 0x2edf2e0b);/* blue */

            ROM_LOAD("btj_h.prm", 0x0c00, 0x0400, 0xc20b197b);/* ? */

            ROM_LOAD("btj_v.prm", 0x1000, 0x0400, 0x5d0c617f);/* ? */

            ROM_REGION(0x8000, REGION_GFX1 | REGIONFLAG_DISPOSE);/* characters */

            ROM_LOAD("bt_p10.rom", 0x0000, 0x8000, 0xd3650211);

            ROM_REGION(0x40000, REGION_GFX2 | REGIONFLAG_DISPOSE);/* tiles */

            ROM_LOAD("bt_p22.rom", 0x00000, 0x10000, 0x8daf7df4);
            ROM_LOAD("bt_p21.rom", 0x10000, 0x10000, 0xb7689599);
            ROM_LOAD("bt_p20.rom", 0x20000, 0x10000, 0xab6217b7);
            ROM_LOAD("bt_p19.rom", 0x30000, 0x10000, 0x8ed759a0);

            ROM_REGION(0x40000, REGION_GFX3 | REGIONFLAG_DISPOSE);/* 16x16 sprites */

            ROM_LOAD("bt_p6.rom", 0x00000, 0x8000, 0x8ffdf969);
            ROM_LOAD("bt_p7.rom", 0x10000, 0x8000, 0x268d10df);
            ROM_LOAD("bt_p8.rom", 0x20000, 0x8000, 0x3e39e9dd);
            ROM_LOAD("bt_p9.rom", 0x30000, 0x8000, 0xbf56da61);

            ROM_REGION(0x80000, REGION_GFX4 | REGIONFLAG_DISPOSE);/* 32x32 sprites */

            ROM_LOAD("bt_p11.rom", 0x00000, 0x10000, 0xaae7410e);
            ROM_LOAD("bt_p12.rom", 0x10000, 0x10000, 0x18914f70);
            ROM_LOAD("bt_p13.rom", 0x20000, 0x10000, 0xcd79ce81);
            ROM_LOAD("bt_p14.rom", 0x30000, 0x10000, 0xedc57117);
            ROM_LOAD("bt_p15.rom", 0x40000, 0x10000, 0x448bf9f4);
            ROM_LOAD("bt_p16.rom", 0x50000, 0x10000, 0x119999eb);
            ROM_LOAD("bt_p17.rom", 0x60000, 0x10000, 0xb5462139);
            ROM_LOAD("bt_p18.rom", 0x70000, 0x10000, 0xcb416227);

            ROM_REGION(0x20000, REGION_SOUND1);
            ROM_LOAD("btj_p04.bin", 0x00000, 0x10000, 0xb2e01129);
            ROM_LOAD("btj_p05.bin", 0x10000, 0x10000, 0x924c24f7);
            ROM_END();
        }