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-rw-r--r--src/mame/audio/s11c_bg.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/audio/s11c_bg.cpp b/src/mame/audio/s11c_bg.cpp
index 742bc4e8985..fb80c7ad1f0 100644
--- a/src/mame/audio/s11c_bg.cpp
+++ b/src/mame/audio/s11c_bg.cpp
@@ -57,11 +57,11 @@ void s11c_bg_device::data_w(uint8_t data)
}
MACHINE_CONFIG_MEMBER( s11c_bg_device::device_add_mconfig )
- MCFG_CPU_ADD("bgcpu", M6809E, XTAL_8MHz) // MC68B09E (note: schematics show this as 8mhz/2, but games crash very quickly with that speed?)
+ MCFG_CPU_ADD("bgcpu", MC6809E, XTAL_8MHz / 4) // MC68B09E
MCFG_CPU_PROGRAM_MAP(s11c_bg_map)
MCFG_QUANTUM_TIME(attotime::from_hz(50))
- MCFG_YM2151_ADD("ym2151", 3580000)
+ MCFG_YM2151_ADD("ym2151", XTAL_3_579545MHz) // "3.58 MHz" on schematics and parts list
MCFG_YM2151_IRQ_HANDLER(WRITELINE(s11c_bg_device, ym2151_irq_w))
MCFG_SOUND_ROUTE(ALL_OUTPUTS, DEVICE_SELF_OWNER, 0.25)