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This commit is contained in:
Aaron Giles 2009-07-09 08:26:36 +00:00
parent 92aa66f163
commit f287f4646f
2 changed files with 75 additions and 0 deletions
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1
.gitattributes vendored
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@ -2058,6 +2058,7 @@ src/mame/drivers/srmp6.c svneol=native#text/plain
src/mame/drivers/srumbler.c svneol=native#text/plain src/mame/drivers/srumbler.c svneol=native#text/plain
src/mame/drivers/ssf2md.c svneol=native#text/plain src/mame/drivers/ssf2md.c svneol=native#text/plain
src/mame/drivers/ssfindo.c svneol=native#text/plain src/mame/drivers/ssfindo.c svneol=native#text/plain
src/mame/drivers/ssgbl.c svneol=native#text/plain
src/mame/drivers/sshangha.c svneol=native#text/plain src/mame/drivers/sshangha.c svneol=native#text/plain
src/mame/drivers/ssingles.c svneol=native#text/plain src/mame/drivers/ssingles.c svneol=native#text/plain
src/mame/drivers/sslam.c svneol=native#text/plain src/mame/drivers/sslam.c svneol=native#text/plain

74
src/mame/drivers/ssgbl.c Normal file
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@ -0,0 +1,74 @@
#include "driver.h"
#include "megadriv.h"
/* Sunset Riders bootleg - based on Genesis / Megadrive version
- coinage system is protected? (by what?)
- title raster effect is broken (bug in megadrive code, happens with normal set too)
*/
ROM_START( ssgbl )
ROM_REGION( 0x400000, "maincpu", 0 ) /* 68000 Code */
ROM_LOAD16_BYTE( "u1", 0x000001, 0x020000, CRC(c59f33bd) SHA1(bd5bce7698a70ea005b79ab34bcdb056872ef980) )
ROM_LOAD16_BYTE( "u2", 0x000000, 0x020000, CRC(9125c054) SHA1(c73bdeb6b11c59d2b5f5968959b02697957ca894) )
ROM_LOAD16_BYTE( "u3", 0x040001, 0x020000, CRC(0fee0fbe) SHA1(001e0fda12707512aad537e533acf28e726e6107) )
ROM_LOAD16_BYTE( "u4", 0x040000, 0x020000, CRC(fc2aed41) SHA1(27eb3957f5ed26ee5276523b1df46fa7eb298e1f))
ROM_END
READ16_HANDLER( sunsetbl_r )
{
return mame_rand(space->machine);
}
READ16_HANDLER( sunsetbl2_r )
{
return 0x0000;//mame_rand(space->machine);
}
static DRIVER_INIT( sunsetbl )
{
int i;
UINT8* rom = memory_region(machine, "maincpu");
/* todo, reduce bitswaps to single swap */
for (i=0x00001;i<0x40000;i+=2)
{
rom[i] = rom[i] ^ 0xff;
rom[i] = BITSWAP8(rom[i], 7,6,5,4,3,2,1,0 );
rom[i] = BITSWAP8(rom[i], 1,6,5,4,3,2,7,0 );
rom[i] = BITSWAP8(rom[i], 7,6,5,3,4,2,1,0 );
rom[i] = BITSWAP8(rom[i], 7,6,5,2,3,4,1,0 );
rom[i] = BITSWAP8(rom[i], 5,6,7,4,3,2,1,0 );
rom[i] = BITSWAP8(rom[i], 7,5,6,4,3,2,1,0 );
}
for (i=0x40001;i<0x80000;i+=2)
{
rom[i] = BITSWAP8(rom[i], 7,6,5,4,3,2,1,0 );
rom[i] = BITSWAP8(rom[i], 7,6,1,4, 3,2,5,0);
rom[i] = BITSWAP8(rom[i], 7,6,5,4,0,2,1,3 );
rom[i] = BITSWAP8(rom[i], 2,6,5,4,3,7,1,0 );
rom[i] = BITSWAP8(rom[i], 7,6,5,0,3,2,1,4 );
rom[i] = BITSWAP8(rom[i], 7,6,5,1,3,2,4,0 );
}
memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x770070, 0x77007f, 0, 0, sunsetbl_r);
memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0xa10006, 0xa10007, 0, 0, sunsetbl2_r); // coins??
/* patch the startup and boot vector?! */
rom[0x01] = 0x00;
rom[0x00] = 0xff;
rom[0x03] = 0xff;
rom[0x02] = 0x00;
rom[0x06] = 0xd2;
rom[0x07] = 0x00;
DRIVER_INIT_CALL(megadriv);
}
GAME( 1993, ssgbl , 0, megadriv, megadriv, sunsetbl, ROT0, "bootleg", "Sunset Riders (bootleg of Megadrive version)", GAME_NOT_WORKING) // playable, but coin system is broken