Implements stage 3

src/main/scala/projet/ControlUnit.scala

@@ -0,0 +1,27 @@
+package projet
+
+import chisel3._
+import chisel3.util.switch
+import chisel3.util.is
+
+class CUInterface extends Bundle {
+    val instruction = Input(UInt(32.W))
+    val reg_file_we = Output(Bool())
+}
+
+object OPCode extends ChiselEnum {
+    val LUI = 0b0110111.U
+}
+
+class ControlUnit() extends Module {
+    import OPCode._
+
+    val io = IO(new CUInterface())
+
+    io.reg_file_we := false.B
+    switch(io.instruction(6, 0)) {
+        is(LUI) {
+            io.reg_file_we := true.B
+        }
+    }
+}