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-rw-r--r--src/mame/drivers/lemmings.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mame/drivers/lemmings.cpp b/src/mame/drivers/lemmings.cpp
index e3e04e32afb..5155a9d853c 100644
--- a/src/mame/drivers/lemmings.cpp
+++ b/src/mame/drivers/lemmings.cpp
@@ -270,6 +270,9 @@ static MACHINE_CONFIG_START( lemmings )
MCFG_DECO_SPRITE_GFXDECODE("gfxdecode")
MCFG_DECO146_ADD("ioprot")
+ MCFG_DECO146_IN_PORTA_CB(IOPORT("INPUTS"))
+ MCFG_DECO146_IN_PORTB_CB(IOPORT("SYSTEM"))
+ MCFG_DECO146_IN_PORTC_CB(IOPORT("DSW"))
MCFG_DECO146_SET_USE_MAGIC_ADDRESS_XOR
MCFG_DECO146_SET_SOUNDLATCH_CALLBACK(lemmings_state, lemmings_sound_cb)