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Diffstat (limited to 'src/mame/drivers/namcos22.cpp')
-rw-r--r--src/mame/drivers/namcos22.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/namcos22.cpp b/src/mame/drivers/namcos22.cpp
index 55fb1d01faa..b30987baa75 100644
--- a/src/mame/drivers/namcos22.cpp
+++ b/src/mame/drivers/namcos22.cpp
@@ -3758,7 +3758,7 @@ MACHINE_CONFIG_START(namcos22_state::namcos22)
MCFG_DEVICE_PROGRAM_MAP( mcu_s22_program)
MCFG_DEVICE_IO_MAP( mcu_s22_io)
- MCFG_DEVICE_ADD("iomcu", NAMCO_C74, XTAL(6'144'000)) // 6.144MHz XTAL on I/O board, not sure if it has a divider
+ MCFG_DEVICE_ADD("iomcu", NAMCO_C74, 49.152_MHz_XTAL/3)
MCFG_DEVICE_PROGRAM_MAP( iomcu_s22_program)
MCFG_DEVICE_IO_MAP( iomcu_s22_io)