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path: root/src/devices/bus/c64/swiftlink.cpp
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Diffstat (limited to 'src/devices/bus/c64/swiftlink.cpp')
-rw-r--r--src/devices/bus/c64/swiftlink.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/bus/c64/swiftlink.cpp b/src/devices/bus/c64/swiftlink.cpp
index cd59887c6cb..14e0b224da5 100644
--- a/src/devices/bus/c64/swiftlink.cpp
+++ b/src/devices/bus/c64/swiftlink.cpp
@@ -43,7 +43,7 @@ static MACHINE_CONFIG_FRAGMENT( c64_swiftlink )
MCFG_MOS6551_IRQ_HANDLER(WRITELINE(c64_swiftlink_cartridge_device, acia_irq_w))
MCFG_MOS6551_TXD_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd))
- MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, NULL)
+ MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, nullptr)
MCFG_RS232_RXD_HANDLER(DEVWRITELINE(MOS6551_TAG, mos6551_device, write_rxd))
MCFG_RS232_DCD_HANDLER(DEVWRITELINE(MOS6551_TAG, mos6551_device, write_dcd))
MCFG_RS232_DSR_HANDLER(DEVWRITELINE(MOS6551_TAG, mos6551_device, write_dsr))