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-rw-r--r--src/mame/drivers/asteroid.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mame/drivers/asteroid.cpp b/src/mame/drivers/asteroid.cpp
index b456b64fb1e..af1671e45a0 100644
--- a/src/mame/drivers/asteroid.cpp
+++ b/src/mame/drivers/asteroid.cpp
@@ -658,6 +658,8 @@ MACHINE_CONFIG_START(asteroid_state::asteroid_base)
MCFG_WATCHDOG_ADD("watchdog")
+ MCFG_TTL153_ADD("dsw_sel")
+
/* video hardware */
MCFG_VECTOR_ADD("vector")
MCFG_SCREEN_ADD("screen", VECTOR)