Revert "放弃当拍握手策略"

This reverts commit 9c953d8963.
2024-11-01 16:01:39 +08:00
parent 9c953d8963
commit 08afdee8e3
3 changed files with 21 additions and 47 deletions
--- a/src/main/scala/backBoard/pico/SimpleSRAM.scala
+++ b/src/main/scala/backBoard/pico/SimpleSRAM.scala
@@ -41,14 +41,16 @@ class SimpleSRAM()(implicit p: Parameters) extends BackModule{
    // } .otherwise { io.mem.rdata := Cat( mem(io.mem.addr(11,2)).reverse ) }
  // }

-  val isAck = RegInit(false.B)
+  val isReadAck = RegInit(false.B)
  when( io.mem.fire ){
-    isAck := false.B
-  } .elsewhen( io.mem.valid & ~isAck ){
-    isAck := true.B
+    isReadAck := false.B
+  } .elsewhen( io.mem.valid & io.mem.wstrb === 0.U ){
+    isReadAck := true.B
  }

-  io.mem.ready := isAck
+  io.mem.ready := 
+    ( io.mem.wstrb =/= 0.U & true.B    ) |
+    ( io.mem.wstrb === 0.U & isReadAck )