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-rw-r--r--src/devices/machine/vrc5074.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/machine/vrc5074.cpp b/src/devices/machine/vrc5074.cpp
index 3bc82a67286..dd275031b76 100644
--- a/src/devices/machine/vrc5074.cpp
+++ b/src/devices/machine/vrc5074.cpp
@@ -144,7 +144,7 @@ void vrc5074_device::target1_map(address_map &map)
}
MACHINE_CONFIG_START(vrc5074_device::device_add_mconfig)
- MCFG_DEVICE_ADD("uart", NS16550, this->clock() / 12)
+ MCFG_DEVICE_ADD("uart", NS16550, DERIVED_CLOCK(1, 12))
MCFG_INS8250_OUT_INT_CB(WRITELINE(*this, vrc5074_device, uart_irq_callback))
MCFG_INS8250_OUT_TX_CB(WRITELINE("ttys00", rs232_port_device, write_txd))
MCFG_INS8250_OUT_DTR_CB(WRITELINE("ttys00", rs232_port_device, write_dtr))