Sorry, got the two examples mixed up. Tony's example does return the value to the register. (Not used to not showing a destination) Quentin Quentin wrote: > > Here is your problem: > When you rotate the Temp reg, you store the result in W, this is wrong. > You should store it back into the Temp register. If you store it in W > the value in Temp does not change, that's why you are reading the same > bit. > > Quentin