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Diffstat (limited to 'src/mame/drivers/system1.cpp')
-rw-r--r--src/mame/drivers/system1.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/drivers/system1.cpp b/src/mame/drivers/system1.cpp
index a303c351342..e88277272c0 100644
--- a/src/mame/drivers/system1.cpp
+++ b/src/mame/drivers/system1.cpp
@@ -2012,10 +2012,10 @@ static INPUT_PORTS_START( dakkochn )
PORT_INCLUDE( choplift )
PORT_MODIFY("P1")
- PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_CUSTOM_MEMBER(DEVICE_SELF, system1_state,dakkochn_mux_data_r, nullptr)
+ PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_CUSTOM_MEMBER(system1_state, dakkochn_mux_data_r)
PORT_MODIFY("P2")
- PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_CUSTOM ) PORT_CUSTOM_MEMBER(DEVICE_SELF, system1_state,dakkochn_mux_status_r, nullptr)
+ PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_CUSTOM ) PORT_CUSTOM_MEMBER(system1_state, dakkochn_mux_status_r)
PORT_MODIFY("SYSTEM")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) /* start 1 & 2 not connected. */