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Diffstat (limited to 'src/mame/drivers/fidel6502.cpp')
-rw-r--r--src/mame/drivers/fidel6502.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/fidel6502.cpp b/src/mame/drivers/fidel6502.cpp
index 652a19e0bd6..79bcf06f8d3 100644
--- a/src/mame/drivers/fidel6502.cpp
+++ b/src/mame/drivers/fidel6502.cpp
@@ -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