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Diffstat (limited to 'src/mame/drivers/alpha68k.cpp')
-rw-r--r--src/mame/drivers/alpha68k.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/alpha68k.cpp b/src/mame/drivers/alpha68k.cpp
index 633227ff1d0..5fce07c3f81 100644
--- a/src/mame/drivers/alpha68k.cpp
+++ b/src/mame/drivers/alpha68k.cpp
@@ -2160,7 +2160,8 @@ MACHINE_CONFIG_START(alpha68k_state::alpha68k_II)
MCFG_SOUND_ROUTE_EX(0, "dac", 1.0, DAC_VREF_POS_INPUT) MCFG_SOUND_ROUTE_EX(0, "dac", -1.0, DAC_VREF_NEG_INPUT)
MACHINE_CONFIG_END
-MACHINE_CONFIG_DERIVED(alpha68k_state::btlfieldb, alpha68k_II)
+MACHINE_CONFIG_START(alpha68k_state::btlfieldb)
+ alpha68k_II(config);
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_VBLANK_INT_DRIVER("screen", alpha68k_state, irq1_line_hold)
MCFG_CPU_PERIODIC_INT_DRIVER(alpha68k_state, irq2_line_hold, 60*4) // MCU irq