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skyfox.c: Corrected clocks and Vsync for the Sky Fox & Exerizer sets based on actual OSCs and measurements taken from a real PCB [Corrado Tomaselli]

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This commit is contained in:
Brian Troha 2010-07-24 20:20:28 +00:00
parent bb1178538c
commit d55d93bc19
1 changed files with 13 additions and 8 deletions
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21
src/mame/drivers/skyfox.c
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@ -244,11 +244,11 @@ static MACHINE_DRIVER_START( skyfox )
MDRV_DRIVER_DATA(skyfox_state)
/* basic machine hardware */
MDRV_CPU_ADD("maincpu", Z80, 4000000)
MDRV_CPU_ADD("maincpu", Z80, XTAL_8MHz/2) /* Verified at 4MHz */
MDRV_CPU_PROGRAM_MAP(skyfox_map)
MDRV_CPU_VBLANK_INT("screen", skyfox_interrupt) /* NMI caused by coin insertion */
MDRV_CPU_ADD("audiocpu", Z80, 1748000)
MDRV_CPU_ADD("audiocpu", Z80, XTAL_14_31818MHz/8) /* Verified at 1.789772MHz */
MDRV_CPU_PROGRAM_MAP(skyfox_sound_map)
MDRV_MACHINE_START(skyfox)
@ -256,7 +256,7 @@ static MACHINE_DRIVER_START( skyfox )
/* video hardware */
MDRV_SCREEN_ADD("screen", RASTER)
MDRV_SCREEN_REFRESH_RATE(60)
MDRV_SCREEN_REFRESH_RATE(62.65)
MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */) // we're using IPT_VBLANK
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MDRV_SCREEN_SIZE(512, 256)
@ -271,10 +271,10 @@ static MACHINE_DRIVER_START( skyfox )
/* sound hardware */
MDRV_SPEAKER_STANDARD_MONO("mono")
MDRV_SOUND_ADD("ym1", YM2203, 1748000)
MDRV_SOUND_ADD("ym1", YM2203, XTAL_14_31818MHz/8) /* Verified at 1.789772MHz */
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
MDRV_SOUND_ADD("ym2", YM2203, 1748000)
MDRV_SOUND_ADD("ym2", YM2203, XTAL_14_31818MHz/8) /* Verified at 1.789772MHz */
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
MACHINE_DRIVER_END
@ -344,9 +344,14 @@ Notes - This archive is of a bootleg copy,
- Although the colour PROMs have the same checksums,
they are not the same.
Main processor - Z80 4MHz
Sound processor - Z80 1.748MHz
- YM2203C x2
Main processor - Z80 @ 4MHz (8MHz OSC / 2)
Sound processor - Z80 @ 1.789772MHz (14.31818MHz OSC / 8)
- YM2203C x2 @ 1.789772MHzMHz (14.31818MHz OSC / 8)
Vsync: 62.65hz
CPU board: Jaleco made in japan ER-8736
Video Board: Jaleco made in japan ER-8737
***************************************************************************/