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-rw-r--r--src/mame/drivers/selz80.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mame/drivers/selz80.cpp b/src/mame/drivers/selz80.cpp
index d5d199131e0..a7b7ae247e4 100644
--- a/src/mame/drivers/selz80.cpp
+++ b/src/mame/drivers/selz80.cpp
@@ -196,7 +196,8 @@ WRITE8_MEMBER( selz80_state::scanlines_w )
WRITE8_MEMBER( selz80_state::digit_w )
{
- m_digits[m_digit] = bitswap<8>(data, 3, 2, 1, 0, 7, 6, 5, 4);
+ if (m_digit < 8)
+ m_digits[m_digit] = bitswap<8>(data, 3, 2, 1, 0, 7, 6, 5, 4);
}
READ8_MEMBER( selz80_state::kbd_r )