diff --git a/sim/mn10300/ChangeLog b/sim/mn10300/ChangeLog
index 69a7b4dcc46..db9a6d2c1f2 100644
--- a/sim/mn10300/ChangeLog
+++ b/sim/mn10300/ChangeLog
@@ -1,5 +1,7 @@
 Mon Dec 16 10:03:52 1996  Jeffrey A Law  (law@cygnus.com)
 
+	* simops.c: Handle "break" instruction.
+
 	* simops.c: Fix restoring the PC for "ret" and "retf" instructions.
 
 Wed Dec 11 09:53:10 1996  Jeffrey A Law  (law@cygnus.com)
diff --git a/sim/mn10300/simops.c b/sim/mn10300/simops.c
index ff0a9159460..b406c41c6e3 100644
--- a/sim/mn10300/simops.c
+++ b/sim/mn10300/simops.c
@@ -3071,3 +3071,13 @@ void OP_F670 (insn, extension)
 {
   abort ();
 }
+
+/* breakpoint */
+void
+OP_FF (insn, extension)
+     unsigned long insn, extension;
+{
+  State.exception = SIGTRAP;
+  PC -= 1;
+}
+