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my 700mhz piece of junk box can run these at full speed, somehow I don't think we need the idle-skips.

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This commit is contained in:
davidhay 2008-04-22 06:21:40 +00:00
parent e66d9670b8
commit 830c238cf0
1 changed files with 3 additions and 55 deletions
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58
src/mame/drivers/prehisle.c
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@ -357,59 +357,7 @@ ROM_END
/******************************************************************************/
static READ16_HANDLER( world_cycle_r )
{
int pc=activecpu_get_pc();
int ret=prehisle_ram16[0x12];
if ((ret&0x8000) && (pc==0x260c || pc==0x268a || pc==0x2b0a || pc==0x34a8 || pc==0x6ae4 || pc==0x83ac || pc==0x25ce || pc==0x29c4)) {
cpu_spinuntil_int();
return ret&0x7fff;
}
return ret;
}
static DRIVER_INIT( prehisle )
{
memory_install_read16_handler(machine, 0, ADDRESS_SPACE_PROGRAM, 0x70024, 0x70025, 0, 0, world_cycle_r);
}
static READ16_HANDLER( usa_cycle_r )
{
int pc=activecpu_get_pc();
int ret=prehisle_ram16[0x12];
if ((ret&0x8000) && (pc==0x281e || pc==0x28a6 || pc==0x295a || pc==0x2868 || pc==0x8f98 || pc==0x3b1e)) {
cpu_spinuntil_int();
return ret&0x7fff;
}
return ret;
}
static DRIVER_INIT( prehislu )
{
memory_install_read16_handler(machine, 0, ADDRESS_SPACE_PROGRAM, 0x70024, 0x70025, 0, 0, usa_cycle_r);
}
static READ16_HANDLER( jap_cycle_r )
{
int pc=activecpu_get_pc();
int ret=prehisle_ram16[0x12];
if ((ret&0x8000) && (pc==0x34b6 /* Todo! */ )) {
cpu_spinuntil_int();
return ret&0x7fff;
}
return ret;
}
static DRIVER_INIT( gensitou )
{
memory_install_read16_handler(machine, 0, ADDRESS_SPACE_PROGRAM, 0x70024, 0x70025, 0, 0, jap_cycle_r);
}
/******************************************************************************/
GAME( 1989, prehisle, 0, prehisle, prehisle, prehisle, ROT0, "SNK", "Prehistoric Isle in 1930 (World)", GAME_SUPPORTS_SAVE )
GAME( 1989, prehislu, prehisle, prehisle, prehisle, prehislu, ROT0, "SNK of America", "Prehistoric Isle in 1930 (US)", GAME_SUPPORTS_SAVE )
GAME( 1989, gensitou, prehisle, prehisle, prehisle, gensitou, ROT0, "SNK", "Genshi-Tou 1930's", GAME_SUPPORTS_SAVE )
GAME( 1989, prehisle, 0, prehisle, prehisle, 0, ROT0, "SNK", "Prehistoric Isle in 1930 (World)", GAME_SUPPORTS_SAVE )
GAME( 1989, prehislu, prehisle, prehisle, prehisle, 0, ROT0, "SNK of America", "Prehistoric Isle in 1930 (US)", GAME_SUPPORTS_SAVE )
GAME( 1989, gensitou, prehisle, prehisle, prehisle, 0, ROT0, "SNK", "Genshi-Tou 1930's", GAME_SUPPORTS_SAVE )