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fidel6502: add note (nw)

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hap 2017-05-19 18:54:47 +02:00
parent 6f535e25d4
commit 1627f382be
1 changed files with 1 additions and 1 deletions
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src/mame/drivers/fidel6502.cpp
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@ -1560,7 +1560,7 @@ MACHINE_CONFIG_END
static MACHINE_CONFIG_START( sc9 )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M6502, 1400000) // from ceramic resonator "681 JSA", measured
MCFG_CPU_ADD("maincpu", M6502, 1400000) // from ceramic resonator "681 JSA", measured. Also released as 1.5MHz, 1.6MHz, 1.9MHz
MCFG_CPU_PROGRAM_MAP(sc9_map)
MCFG_TIMER_DRIVER_ADD_PERIODIC("irq_on", fidel6502_state, irq_on, attotime::from_hz(610)) // from 555 timer (22nF, 102K, 2.7K)
MCFG_TIMER_START_DELAY(attotime::from_hz(610) - attotime::from_usec(41)) // active for 41us