public override void Set(Processor proc, long value)
 {
     proc.registerFile[name] = value;
 }
 // set X Y sets register X to the value of Y.
 public override long Execute(Processor proc)
 {
     x.Set(proc, y.Get(proc));
     return(1);
 }
 public override void Set(Processor proc, long value)
 {
     throw new NotImplementedException();
 }
 public override long Get(Processor proc)
 {
     return(value);
 }
 public abstract void Set(Processor proc, long value);
 public abstract long Get(Processor proc);
 public abstract long Execute(Processor proc);