diff --git a/src/main/scala/backBoard/shin/ShinTop.scala b/src/main/scala/backBoard/shin/ShinTop.scala
index 705aad5..1c4228b 100644
--- a/src/main/scala/backBoard/shin/ShinTop.scala
+++ b/src/main/scala/backBoard/shin/ShinTop.scala
@@ -56,22 +56,12 @@ abstract class ShinTopBase extends Module{
   io.isSoftReset := interface.io.isSoftReset
   io.interrupt   := interface.io.interrupt
 
-  downCDRIn.io.serDat  := io.dDatIn
-  downCDRIn.io.overCLK := io.clk8x
 
-  upCDRIn.io.serDat  := io.uDatIn
+  downCDRIn.io.overCLK := io.clk8x
   upCDRIn.io.overCLK := io.clk8x
 
-  io.dDatOut := downCDROut.io.serDat
-  io.uDatOut := upCDROut.io.serDat
 
 
-  //override
-  when( slaveParser.io.isLoop & interface.io.cReg.modeSel === false.B){
-    upCDRIn.io.serDat := downCDROut.io.serDat
-    io.dDatOut := false.B
-  }
-
   io.ospi  <> interface.io.ospi
   io.iqspi <> interface.io.iqspi
   io.oqspi <> interface.io.oqspi
@@ -439,4 +429,40 @@ trait ShinTopWatchDog{ this: ShinTopBase =>
 class ShinTop extends ShinTopBase
 with ShinTopMaster
 with ShinTopSlave
-with ShinTopWatchDog
+with ShinTopWatchDog{
+
+  when( interface.io.cReg.modeSel === false.B ){ //slave
+    when( (slaveParser.io.intHWTrig(0) | slaveParser.io.intHWTrig(1)) ){ //硬件错误
+      downCDRIn.io.serDat  := false.B
+      upCDRIn.io.serDat  := false.B
+      when( slaveParser.io.isLoop ){ //回环
+        io.dDatOut := false.B
+        io.uDatOut := io.dDatIn
+      } .otherwise{ //非回环
+        io.dDatOut := io.dDatIn
+        io.uDatOut := io.uDatIn      
+      }
+    } .otherwise{ //无硬件错误
+      when( slaveParser.io.isLoop ){ //回环
+        downCDRIn.io.serDat  := io.dDatIn
+        upCDRIn.io.serDat    := downCDROut.io.serDat
+        io.dDatOut := false.B
+        io.uDatOut := upCDROut.io.serDat 
+      } .otherwise{ //非回环
+        downCDRIn.io.serDat  := io.dDatIn
+        upCDRIn.io.serDat    := io.uDatIn
+        io.dDatOut := downCDROut.io.serDat
+        io.uDatOut := upCDROut.io.serDat
+      }
+    }
+  } .otherwise{ //master
+    downCDRIn.io.serDat  := false.B
+    upCDRIn.io.serDat    := io.uDatIn
+    io.dDatOut := downCDROut.io.serDat
+    io.uDatOut := false.B
+  }
+
+
+
+
+}