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-rw-r--r--src/mame/drivers/rtpc.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/drivers/rtpc.cpp b/src/mame/drivers/rtpc.cpp
index 79e0fcd29a7..e3f0bb5d1b5 100644
--- a/src/mame/drivers/rtpc.cpp
+++ b/src/mame/drivers/rtpc.cpp
@@ -427,7 +427,7 @@ void rtpc_state::crrb_w(u8 data)
// 6 reserved
// 7 reserved
- if (BIT(data, 0))
+ if (m_scc && BIT(data, 0))
m_scc->reset();
// TODO: rs232 if
m_mcu->set_input_line(INPUT_LINE_RESET, !BIT(data, 2));