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-rw-r--r--src/mame/audio/8080bw.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/audio/8080bw.cpp b/src/mame/audio/8080bw.cpp
index 224334cf66f..5c2f9e99d42 100644
--- a/src/mame/audio/8080bw.cpp
+++ b/src/mame/audio/8080bw.cpp
@@ -1024,7 +1024,7 @@ WRITE8_MEMBER(_8080bw_state::invrvnge_port05_w)
TIMER_DEVICE_CALLBACK_MEMBER(_8080bw_state::nmi_timer)
{
m_timer_state ^= 1;
- m_audiocpu->set_input_line(INPUT_LINE_NMI, BIT(m_timer_state, 0) ? ASSERT_LINE : CLEAR_LINE );
+ m_audiocpu->set_input_line(INPUT_LINE_NMI, m_timer_state ? ASSERT_LINE : CLEAR_LINE );
}