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r26289 Tuesday 19th November, 2013 at 22:33:30 UTC by Tafoid
snk6502.c:  Adjusted Nibbler board clock rate to use actual known master clock and a logical divisor.  [Tafoid]

Comment: Still needs 100% verification from actual PCB but this fixes an issue with speed of game and sound effects not matching video output (specifically when snake is first drawn in 3 parts - the sound effect now match the drawing).
[src/mame/drivers]snk6502.c

trunk/src/mame/drivers/snk6502.c
r26288r26289
887887static MACHINE_CONFIG_START( vanguard, snk6502_state )
888888
889889   // basic machine hardware
890   //MCFG_CPU_ADD("maincpu", M6502, MASTER_CLOCK / 8)   // 1.4 MHz
891   MCFG_CPU_ADD("maincpu", M6502, 930000)      // adjusted
890   MCFG_CPU_ADD("maincpu", M6502, MASTER_CLOCK / 16) // adjusted using common divisor
891
892892   MCFG_CPU_PROGRAM_MAP(vanguard_map)
893893   MCFG_CPU_VBLANK_INT_DRIVER("screen", snk6502_state, snk6502_interrupt)
894894

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