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-rw-r--r--src/devices/cpu/pdp8/hd6120.cpp4
1 files changed, 1 insertions, 3 deletions
diff --git a/src/devices/cpu/pdp8/hd6120.cpp b/src/devices/cpu/pdp8/hd6120.cpp
index 110dfffaea5..574cdde757a 100644
--- a/src/devices/cpu/pdp8/hd6120.cpp
+++ b/src/devices/cpu/pdp8/hd6120.cpp
@@ -606,9 +606,7 @@ void hd6120_device::execute_run()
case minor_state::TAD_4:
m_temp += m_ac;
if (m_temp >= 010000)
- m_flags |= 4;
- else
- m_flags &= 3;
+ m_flags ^= 4; // LINK is complemented upon carry out
next_instruction();
break;