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Updated video timing in bestbest to match PCB [Guru]
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@ -1035,7 +1035,7 @@ static MACHINE_DRIVER_START( bestbest )
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/* video hardware */
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/* video hardware */
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MDRV_SCREEN_ADD("screen", RASTER)
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MDRV_SCREEN_ADD("screen", RASTER)
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MDRV_SCREEN_REFRESH_RATE(60)
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MDRV_SCREEN_REFRESH_RATE(59.1734) // measured on pcb (15.6218kHz HSync)
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MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
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MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
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MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
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MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
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MDRV_SCREEN_SIZE(256, 256)
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MDRV_SCREEN_SIZE(256, 256)
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@ -1269,12 +1269,15 @@ Notes:
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6116 - 2kx8 SRAM
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6116 - 2kx8 SRAM
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62256 - 32kx8 SRAM
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62256 - 32kx8 SRAM
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CN1 - Connector for extra controls
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CN1 - Connector for extra controls
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VSync - 60Hz
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HSync - 15.68kHz
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ROMs 7-18 located on a plug-in daughterboard
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ROMs 7-18 located on a plug-in daughterboard
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Both PROMs are identical
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Both PROMs are identical
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Measurements
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------------
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XTAL - 23.99463MHz
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VSync - 59.1734Hz
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HSync - 15.6218kHz
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***************************************************************************/
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***************************************************************************/
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ROM_START( bestbest )
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ROM_START( bestbest )
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