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Attempt to fix MAMETESTERS bug #5939

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05939: prehisle, gensitou, prehislek, prehisleu: Wrong speed.
This is a guesswork but in any case it's better than use a standard refresh rate of 60.00 Hz. Values are taken from snk68.c driver which contains games with very similar (if not identical) hardware to prehisle. Notice that the new refresh rate is identical to NeoGeo and this should not be a surprise since we're talking about SNK manufacturer
This commit is contained in:
Mamesick 2015-09-13 08:08:50 +02:00
parent e92ac9e0fa
commit 6972e75f62
1 changed files with 4 additions and 4 deletions
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8
src/mame/drivers/prehisle.c
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@ -205,10 +205,10 @@ static MACHINE_CONFIG_START( prehisle, prehisle_state )
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
MCFG_SCREEN_SIZE(32*8, 32*8)
MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
// the screen parameters are guessed but should be accurate. They
// give a theoretical refresh rate of 59.1856Hz while the measured
// rate on a snk68.c with very similar hardware board is 59.16Hz.
MCFG_SCREEN_RAW_PARAMS(XTAL_24MHz/4, 384, 0, 256, 264, 16, 240)
MCFG_SCREEN_UPDATE_DRIVER(prehisle_state, screen_update_prehisle)
MCFG_SCREEN_PALETTE("palette")