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-rw-r--r--src/devices/cpu/mips/r4000.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/devices/cpu/mips/r4000.cpp b/src/devices/cpu/mips/r4000.cpp
index 2d51e7d0e8a..9d126121b1c 100644
--- a/src/devices/cpu/mips/r4000.cpp
+++ b/src/devices/cpu/mips/r4000.cpp
@@ -212,6 +212,8 @@ void r4000_base_device::device_reset()
m_ll_active = false;
m_bus_error = false;
+ m_cp0[CP0_Cause] = 0;
+
m_cp0[CP0_WatchLo] = 0;
m_cp0[CP0_WatchHi] = 0;