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-rw-r--r--src/mame/drivers/px4.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/drivers/px4.cpp b/src/mame/drivers/px4.cpp
index 0a5d764f8ba..b443ebf74d2 100644
--- a/src/mame/drivers/px4.cpp
+++ b/src/mame/drivers/px4.cpp
@@ -1473,7 +1473,7 @@ PALETTE_INIT_MEMBER( px4p_state, px4p )
// MACHINE DRIVERS
//**************************************************************************
-static MACHINE_CONFIG_START( px4, px4_state )
+static MACHINE_CONFIG_START( px4 )
// basic machine hardware
MCFG_CPU_ADD("maincpu", Z80, XTAL_7_3728MHz / 2) // uPD70008
MCFG_CPU_PROGRAM_MAP(px4_mem)
@@ -1539,7 +1539,7 @@ static MACHINE_CONFIG_START( px4, px4_state )
MCFG_SOFTWARE_LIST_ADD("epson_cpm_list", "epson_cpm")
MACHINE_CONFIG_END
-static MACHINE_CONFIG_DERIVED_CLASS( px4p, px4, px4p_state )
+static MACHINE_CONFIG_DERIVED( px4p, px4 )
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_IO_MAP(px4p_io)