diff -r 98cbf2c762e9 -r 57eeeec8d19e src/arch/alpha/isa.hh
--- a/src/arch/alpha/isa.hh	Sat Oct 09 13:05:04 2010 -0700
+++ b/src/arch/alpha/isa.hh	Sat Oct 09 13:48:47 2010 -0700
@@ -81,6 +81,7 @@
             lock_flag = 0;
             lock_addr = 0;
             intr_flag = 0;
+            memset(ipr, 0, sizeof(ipr));
         }
 
         void serialize(EventManager *em, std::ostream &os);