Nuke

src/main/scala/IMem.scala

@@ -0,0 +1,52 @@
+package FiveStage
+import chisel3._
+import chisel3.experimental.MultiIOModule
+
+/**
+  * This module is finished and does not need to be modified to complete your fivestage.
+  * 
+  * When setup is enabled data is written to the instruction memory.
+  * In normal operation this memory is write only (no self modifying code)
+  */
+class IMEM() extends MultiIOModule {
+
+  // Don't touch
+  val testHarness = IO(
+    new Bundle {
+      val setupSignals     = Input(new IMEMsetupSignals)
+      val requestedAddress = Output(UInt())
+    }
+  )
+
+  
+  val io = IO(
+    new Bundle {
+      val instructionAddress = Input(UInt(32.W))
+      val instruction        = Output(UInt(32.W))
+    })
+
+
+  /**
+    SyncReadMem will output the value of the address signal set in the previous cycle.
+    */
+  val instructions = SyncReadMem(4096, UInt(32.W))
+
+  // The address we want to read at during operation. During setup it acts as a write address
+  // leading to the somewhat uninformative name shown here.
+  val addressSource = Wire(UInt(32.W))
+
+  testHarness.requestedAddress := io.instructionAddress
+
+  when(testHarness.setupSignals.setup){
+    addressSource := testHarness.setupSignals.address
+  }.otherwise {
+    addressSource := io.instructionAddress
+  }
+
+  // For loading data
+  when(testHarness.setupSignals.setup){
+    instructions(addressSource) := testHarness.setupSignals.instruction
+  }
+
+  io.instruction := instructions(addressSource)
+}