Implement memory module

src/main/scala/MEM.scala

@@ -18,6 +18,11 @@ class MemoryFetch() extends MultiIOModule {
 
   val io = IO(
     new Bundle {
+      val dataIn         = Input(UInt(32.W))
+      val dataAddress    = Input(UInt(32.W))
+      val writeEnable    = Input(Bool())
+
+      val dataOut        = Output(UInt(32.W))
     })
 
 
@@ -35,7 +40,9 @@ class MemoryFetch() extends MultiIOModule {
   /**
     * Your code here.
     */
-  DMEM.io.dataIn      := 0.U
-  DMEM.io.dataAddress := 0.U
-  DMEM.io.writeEnable := false.B
+  DMEM.io.dataIn      := io.dataIn
+  DMEM.io.dataAddress := io.dataAddress
+  DMEM.io.writeEnable := io.writeEnable
+
+  io.dataOut := DMEM.io.dataOut
 }