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From: Corrado Tomaselli [mailto:corrado.to@tiscali.it]

Browse Source 
Sent: Wednesday, September 17, 2008 10:31 PM
To: submit@mamedev.org
Subject: Shadow Force clocks

Verified cpu clocks and corrected/verified OKI M6295 frequencies and pin

7 status. Updated Xtal.h file
This commit is contained in:
Aaron Giles 2008-09-18 16:09:58 +00:00
parent c61b8ff249
commit 5f597be8b1
2 changed files with 6 additions and 5 deletions
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1
src/emu/drivers/xtal.h
View File

@ -86,6 +86,7 @@ enum
XTAL_13_3MHz = 13300000, /* BMC bowling */
XTAL_13_33056MHz = 13330560, /* Taito L */
XTAL_13_4MHz = 13400000, /* TNK3, Ikari Warriors h/w */
XTAL_13_4952MHz = 13495200, /* Used on Shadow Force pcb and maybe other Technos pcbs? */
XTAL_14MHz = 14000000,
XTAL_14_31818MHz = 14318180, /* Extremely common, used on 100's of PCBs */
XTAL_14_705882MHz = 14705882, /* Aleck64 */

10
src/mame/drivers/shadfrce.c
View File

@ -518,11 +518,11 @@ static MACHINE_RESET( shadfrce )
}
static MACHINE_DRIVER_START( shadfrce )
MDRV_CPU_ADD("main", M68000, 28000000/2) /* ? Guess - CPU is rated for 16MHz */
MDRV_CPU_ADD("main", M68000, XTAL_28MHz/2) /* verified on pcb */
MDRV_CPU_PROGRAM_MAP(shadfrce_map,0)
MDRV_CPU_VBLANK_INT_HACK(shadfrce_interrupt,256)
MDRV_CPU_ADD("audio", Z80, 3579545)
MDRV_CPU_ADD("audio", Z80, XTAL_3_579545MHz) /* verified on pcb */
MDRV_CPU_PROGRAM_MAP(shadfrce_sound_map,0)
MDRV_MACHINE_RESET(shadfrce)
@ -544,13 +544,13 @@ static MACHINE_DRIVER_START( shadfrce )
/* sound hardware */
MDRV_SPEAKER_STANDARD_STEREO("left", "right")
MDRV_SOUND_ADD("ym", YM2151, 3579545)
MDRV_SOUND_ADD("ym", YM2151, XTAL_3_579545MHz) /* verified on pcb */
MDRV_SOUND_CONFIG(ym2151_config)
MDRV_SOUND_ROUTE(0, "left", 0.50)
MDRV_SOUND_ROUTE(1, "right", 0.50)
MDRV_SOUND_ADD("oki", OKIM6295, 1584000)
MDRV_SOUND_CONFIG(okim6295_interface_pin7high) // clock frequency & pin 7 not verified
MDRV_SOUND_ADD("oki", OKIM6295, XTAL_13_4952MHz/8) /* verified on pcb */
MDRV_SOUND_CONFIG(okim6295_interface_pin7high) /* verified on pcb, pin7 is at 2.4v */
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "left", 0.50)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "right", 0.50)
MACHINE_DRIVER_END