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-rw-r--r--src/devices/cpu/pdp1/pdp1.cpp1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/devices/cpu/pdp1/pdp1.cpp b/src/devices/cpu/pdp1/pdp1.cpp
index a4c55cc6377..f16985610f0 100644
--- a/src/devices/cpu/pdp1/pdp1.cpp
+++ b/src/devices/cpu/pdp1/pdp1.cpp
@@ -829,7 +829,6 @@ void pdp1_device::execute_run()
case 2:
/* read second word as data */
- MB = 0;
/* data will be transferred to IO register in response to RPB */
m_extern_iot[2](2, 1, MB, IO, AC);
m_rim_step = 3;