diff options
author | Angelo Salese <angelosa@users.noreply.github.com> | 2009-11-29 21:54:34 +0000 |
---|---|---|
committer | Angelo Salese <angelosa@users.noreply.github.com> | 2009-11-29 21:54:34 +0000 |
commit | 8be42ffeeb254815cfdeca8613d6ea902a1dc002 (patch) | |
tree | 3f241e67a43ed031934a38d853520654edf9f454 /src/mame | |
parent | d638e3b6b3f0ae163a2e3032c567fd8aea479733 (diff) |
Joker's Wild: bypassed the rng test [Angelo Salese]
Diffstat (limited to 'src/mame')
-rw-r--r-- | src/mame/drivers/jokrwild.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/mame/drivers/jokrwild.c b/src/mame/drivers/jokrwild.c index 6af81b3c673..e0cd6799d71 100644 --- a/src/mame/drivers/jokrwild.c +++ b/src/mame/drivers/jokrwild.c @@ -162,10 +162,16 @@ static PALETTE_INIT( jokrwild ) * Read/Write Handlers * *****************************/ -//static READ8_HANDLER( random_gen_r ) -//{ -// return mame_rand(machine) & 0xff; -//} +static READ8_HANDLER( rng_r ) +{ + if(cpu_get_pc(space->cpu) == 0xab32) + return (offset == 0) ? 0x9e : 0x27; + + if(cpu_get_pc(space->cpu) == 0xab3a) + return (offset == 2) ? 0x49 : 0x92; + + return mame_rand(space->machine) & 0xff; +} /************************* @@ -182,7 +188,7 @@ static ADDRESS_MAP_START( jokrwild_map, ADDRESS_SPACE_PROGRAM, 8 ) AM_RANGE(0x6000, 0x6000) AM_DEVWRITE("crtc", mc6845_address_w) AM_RANGE(0x6001, 0x6001) AM_DEVREADWRITE("crtc", mc6845_register_r, mc6845_register_w) // AM_RANGE(0x6100, 0x6100) AM_READWRITENOP /* R/W ???? */ -// AM_RANGE(0x6200, 0x6203) another PIA? + AM_RANGE(0x6200, 0x6203) AM_READ(rng_r)//another PIA? // AM_RANGE(0x6300, 0x6300) unknown AM_RANGE(0x8000, 0xffff) AM_ROM ADDRESS_MAP_END @@ -366,7 +372,7 @@ static const mc6845_interface mc6845_intf = static MACHINE_DRIVER_START( jokrwild ) /* basic machine hardware */ - MDRV_CPU_ADD("maincpu", M6809, MASTER_CLOCK/8) /* guess */ + MDRV_CPU_ADD("maincpu", M6809, MASTER_CLOCK/2) /* guess */ MDRV_CPU_PROGRAM_MAP(jokrwild_map) MDRV_CPU_VBLANK_INT("screen", nmi_line_pulse) |