diff --git a/scripts/instructions.yaml b/scripts/instructions.yaml
index 8a5f384..e42a09f 100644
--- a/scripts/instructions.yaml
+++ b/scripts/instructions.yaml
@@ -1768,6 +1768,12 @@ mtocrf:
   compare: CMP_RC_0
   fxm: FXM_ONEHOT
 
+mcrf:
+  unit: U_CR
+  internalOp: CR_MCRF
+  rOut: ROUT_NONE
+  compare: CMP_RC_0
+
 b:
   unit: U_BR
   internalOp: BR_UNCOND
diff --git a/src/main/scala/Control.scala b/src/main/scala/Control.scala
index fbeb7c3..ff18072 100644
--- a/src/main/scala/Control.scala
+++ b/src/main/scala/Control.scala
@@ -37,8 +37,9 @@ object Control {
   val SPR_MF = 0.U(2.W)
   val SPR_MT = 1.U(2.W)
 
-  val CR_MF = 0.U(2.W)
-  val CR_MT = 1.U(2.W)
+  val CR_MF   = 0.U(2.W)
+  val CR_MT   = 1.U(2.W)
+  val CR_MCRF = 2.U(2.W)
 
   val BR_UNCOND = 0.U(2.W)
   val BR_COND   = 1.U(2.W)
diff --git a/src/main/scala/Core.scala b/src/main/scala/Core.scala
index 5097de5..afc4cf5 100644
--- a/src/main/scala/Core.scala
+++ b/src/main/scala/Core.scala
@@ -240,6 +240,8 @@ class Core(bits: Int, memSize: Int, memFileName: String, resetAddr: Int) extends
       conditionRegister := fxm.asBools.zip(conditionRegister).zip(executeRs(31, 0).nibbles().reverse).map({ case ((fxm, cr), reg) =>
         Mux(fxm, reg, cr)
       })
+    } .elsewhen (ctrl.internalOp === CR_MCRF) {
+      conditionRegister(insn_bf(executeInsn)) := conditionRegister(insn_bfa(executeInsn))
     }
   }
 
diff --git a/src/main/scala/Instructions.scala b/src/main/scala/Instructions.scala
index 20c08c6..8ca9948 100644
--- a/src/main/scala/Instructions.scala
+++ b/src/main/scala/Instructions.scala
@@ -164,6 +164,7 @@ object Instructions {
   def MFOCRF    = BitPat("b011111?????1?????????0000010011?")
   def MTCRF     = BitPat("b011111?????0?????????0010010000?")
   def MTOCRF    = BitPat("b011111?????1?????????0010010000?")
+  def MCRF      = BitPat("b010011???????????????0000000000?")
 
   // SPR read/write
   def MFSPR     = BitPat("b011111???????????????0101010011?")
@@ -214,7 +215,6 @@ object Instructions {
 
   //def DCBZ      = BitPat("b011111???????????????1111110110?")
 
-  //def MCRF      = BitPat("b010011???????????????0000000000?")
   //def ISEL      = BitPat("b011111????????????????????01111?") // 2.03
 
   //def PRTYD     = BitPat("b011111???????????????0010111010?") // 2.05