Do some cleanup on the ALU

Author: outercloudstudio

src/main/scala/main/Alu.scala

@@ -30,17 +30,9 @@ class Alu extends Module {
           io.output := io.rs + io.rt;
         }
 
-        is(Operation.Sub) {
-          io.output := io.rs - io.rt;
-        }
-
         is(Operation.Mul) {
           io.output := io.rs * io.rt;
         }
-
-        is(Operation.Div) {
-          io.output := io.rs / io.rt;
-        }
       }
     }
   }

src/main/scala/main/Operation.scala

@@ -3,5 +3,5 @@ import chisel3.util._
 import _root_.circt.stage.ChiselStage
 
 object Operation extends ChiselEnum {
-  val NoOp, MoveImmediate, MoveRegister, Load, Add, Sub, Mul, Div, JumpE, JumpNE, Compare, End, Write = Value
+  val NoOp, MoveImmediate, MoveRegister, Load, Add, Mul, Compare, JumpE, JumpNE, End, Write = Value
 }

src/main/scala/main/Thread.scala

@@ -50,7 +50,7 @@ class Thread extends Module {
   io.idle := idle;
 
   when(io.dispatcher_opcode_loaded && io.dispatcher_program_pointer === program_counter.io.program_counter) {
-    when(io.operation === Operation.Add || io.operation === Operation.Sub || io.operation === Operation.Mul || io.operation === Operation.Div) {
+    when(io.operation === Operation.Add || io.operation === Operation.Mul || io.operation === Operation.Compare) {
       alu.io.execute := true.B;
       alu.io.operation := io.operation;