From 296b7881ff162c2d6c3455067c604162229c3c34 Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Wed, 29 Jun 2016 01:28:59 +0200
Subject: [PATCH] Applied mainline PCem revision 522 commit: REP instructions
 now handle trap flag correctly, Windows NT 3.51 now works on 386 systems.

---
 src/386_dynarec.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/386_dynarec.c b/src/386_dynarec.c
index ee9d33f1b..488168286 100644
--- a/src/386_dynarec.c
+++ b/src/386_dynarec.c
@@ -297,7 +297,10 @@ int rep386(int fv)
           that high frequency timers still work okay. This amount is different
           for interpreter and recompiler*/
         int cycles_end = cycles - ((is386 && cpu_use_dynarec) ? 1000 : 100);
-        
+
+        if (trap)
+                cycles_end = cycles+1; /*Force the instruction to end after only one iteration when trap flag set*/        
+
         cpu_reps++;
         
         flags_rebuild();