放弃当拍握手策略

src/main/scala/backBoard/pico/SimpleSRAM.scala

@@ -41,16 +41,14 @@ class SimpleSRAM()(implicit p: Parameters) extends BackModule{
     // } .otherwise { io.mem.rdata := Cat( mem(io.mem.addr(11,2)).reverse ) }
   // }
 
-  val isReadAck = RegInit(false.B)
+  val isAck = RegInit(false.B)
   when( io.mem.fire ){
-    isReadAck := false.B
-  } .elsewhen( io.mem.valid & io.mem.wstrb === 0.U ){
-    isReadAck := true.B
+    isAck := false.B
+  } .elsewhen( io.mem.valid & ~isAck ){
+    isAck := true.B
   }
 
-  io.mem.ready := 
-    ( io.mem.wstrb =/= 0.U & true.B    ) |
-    ( io.mem.wstrb === 0.U & isReadAck )
+  io.mem.ready := isAck