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-rw-r--r--src/mame/machine/pitnrun.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/machine/pitnrun.cpp b/src/mame/machine/pitnrun.cpp
index 1e8ab1091c1..9b7d691108d 100644
--- a/src/mame/machine/pitnrun.cpp
+++ b/src/mame/machine/pitnrun.cpp
@@ -30,7 +30,7 @@ void pitnrun_state::machine_reset()
{
m_zaccept = 1;
m_zready = 0;
- m_mcu->set_input_line(0, CLEAR_LINE);
+ if (m_mcu) m_mcu->set_input_line(0, CLEAR_LINE);
}
TIMER_CALLBACK_MEMBER(pitnrun_state::mcu_real_data_r)