--- sid-20060325/sid/component/cgen-cpu/arm7t/arm7f.cxx	2004-08-04 23:42:00.000000000 +0800
+++ sid-20060325-patch/sid/component/cgen-cpu/arm7t/arm7f.cxx	2006-03-29 12:56:55.021225400 +0800
@@ -1443,7 +1443,11 @@
     case SHIFT_TYPE_LSL : return rm << shift;
     case SHIFT_TYPE_LSR : return (USI) rm >> shift;
     case SHIFT_TYPE_ASR : return rm >> shift;
-    case SHIFT_TYPE_ROR : return RORSI (rm, shift);
+    case SHIFT_TYPE_ROR : //return RORSI (rm, shift); // old
+        if (shift == 0) // it is RRX
+	    return ((USI)rm >> 1) | ((USI)this->hardware.h_cbit << 31);
+	else
+	    return RORSI (rm, shift);
     }
   abort();
 }