diff --git a/vvp/codes.h b/vvp/codes.h
index b94d82d4b..24f49fc89 100644
--- a/vvp/codes.h
+++ b/vvp/codes.h
@@ -19,7 +19,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT)
-#ident "$Id: codes.h,v 1.43 2002/05/31 20:04:22 steve Exp $"
+#ident "$Id: codes.h,v 1.44 2002/06/02 18:55:58 steve Exp $"
 #endif
 
 
@@ -45,6 +45,7 @@ extern bool of_ASSIGN_MEM(vthread_t thr, vvp_code_t code);
 extern bool of_ASSIGN_X0(vthread_t thr, vvp_code_t code);
 extern bool of_BREAKPOINT(vthread_t thr, vvp_code_t code);
 extern bool of_CASSIGN(vthread_t thr, vvp_code_t code);
+extern bool of_CMPIU(vthread_t thr, vvp_code_t code);
 extern bool of_CMPS(vthread_t thr, vvp_code_t code);
 extern bool of_CMPU(vthread_t thr, vvp_code_t code);
 extern bool of_CMPX(vthread_t thr, vvp_code_t code);
@@ -155,6 +156,9 @@ extern vvp_code_t codespace_index(vvp_cpoint_t ptr);
 
 /*
  * $Log: codes.h,v $
+ * Revision 1.44  2002/06/02 18:55:58  steve
+ *  Add %cmpi/u instruction.
+ *
  * Revision 1.43  2002/05/31 20:04:22  steve
  *  Add the %muli instruction.
  *
diff --git a/vvp/compile.cc b/vvp/compile.cc
index e1f21dbc5..16873f978 100644
--- a/vvp/compile.cc
+++ b/vvp/compile.cc
@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT)
-#ident "$Id: compile.cc,v 1.129 2002/05/31 20:04:22 steve Exp $"
+#ident "$Id: compile.cc,v 1.130 2002/06/02 18:55:58 steve Exp $"
 #endif
 
 # include  "arith.h"
@@ -93,6 +93,7 @@ const static struct opcode_table_s opcode_table[] = {
       { "%cmp/u",  of_CMPU,   3,  {OA_BIT1,     OA_BIT2,     OA_NUMBER} },
       { "%cmp/x",  of_CMPX,   3,  {OA_BIT1,     OA_BIT2,     OA_NUMBER} },
       { "%cmp/z",  of_CMPZ,   3,  {OA_BIT1,     OA_BIT2,     OA_NUMBER} },
+      { "%cmpi/u", of_CMPIU,  3,  {OA_BIT1,     OA_BIT2,     OA_NUMBER} },
       { "%deassign",of_DEASSIGN,2,{OA_FUNC_PTR, OA_BIT1,     OA_NONE} },
       { "%delay",  of_DELAY,  1,  {OA_NUMBER,   OA_NONE,     OA_NONE} },
       { "%delayx", of_DELAYX, 1,  {OA_NUMBER,   OA_NONE,     OA_NONE} },
@@ -1413,6 +1414,9 @@ vvp_ipoint_t debug_lookup_functor(const char*name)
 
 /*
  * $Log: compile.cc,v $
+ * Revision 1.130  2002/06/02 18:55:58  steve
+ *  Add %cmpi/u instruction.
+ *
  * Revision 1.129  2002/05/31 20:04:22  steve
  *  Add the %muli instruction.
  *
diff --git a/vvp/vthread.cc b/vvp/vthread.cc
index d07e61c3d..793672d95 100644
--- a/vvp/vthread.cc
+++ b/vvp/vthread.cc
@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #if !defined(WINNT)
-#ident "$Id: vthread.cc,v 1.77 2002/05/31 20:04:22 steve Exp $"
+#ident "$Id: vthread.cc,v 1.78 2002/06/02 18:55:58 steve Exp $"
 #endif
 
 # include  "vthread.h"
@@ -577,6 +577,49 @@ bool of_CMPS(vthread_t thr, vvp_code_t cp)
       return true;
 }
 
+bool of_CMPIU(vthread_t thr, vvp_code_t cp)
+{
+      unsigned eq = 1;
+      unsigned eeq = 1;
+      unsigned lt = 0;
+
+      unsigned idx1 = cp->bit_idx[0];
+      unsigned imm  = cp->bit_idx[1];
+
+      for (unsigned idx = 0 ;  idx < cp->number ;  idx += 1) {
+	    unsigned lv = thr_get_bit(thr, idx1);
+	    unsigned rv = imm & 1;
+	    imm >>= 1;
+
+	    if (lv > rv) {
+		  lt = 0;
+		  eeq = 0;
+	    } else if (lv < rv) {
+		  lt = 1;
+		  eeq = 0;
+	    }
+	    if (eq != 2) {
+		  if ((lv == 0) && (rv != 0))
+			eq = 0;
+		  if ((lv == 1) && (rv != 1))
+			eq = 0;
+		  if ((lv | rv) >= 2)
+			eq = 2;
+	    }
+
+	    if (idx1 >= 4) idx1 += 1;
+      }
+
+      if (eq == 2)
+	    lt = 2;
+
+      thr_put_bit(thr, 4, eq);
+      thr_put_bit(thr, 5, lt);
+      thr_put_bit(thr, 6, eeq);
+
+      return true;
+}
+
 bool of_CMPU(vthread_t thr, vvp_code_t cp)
 {
       unsigned eq = 1;
@@ -2165,6 +2208,9 @@ bool of_CALL_UFUNC(vthread_t thr, vvp_code_t cp)
 
 /*
  * $Log: vthread.cc,v $
+ * Revision 1.78  2002/06/02 18:55:58  steve
+ *  Add %cmpi/u instruction.
+ *
  * Revision 1.77  2002/05/31 20:04:22  steve
  *  Add the %muli instruction.
  *