On 4/13/2020 11:48 AM, Martin Eberhard wrote:
>> This is incorrect.
> Actually, what I said IS correct.
Only for some values of PDP-8. The reference page I pointed you in the
Small Computer Handbook clearly states that for some PDP-8's, it is
> Try this experiment, either on the pdp8/e simulator or on a real pdp8e. (I have done both.)
I believe you. I knew it worked as you described on the 8/E, and SIMH
correctly simulates that.
Your original query in no way implied that you wanted your program to
work only on PDP-8's nearly as new as yours :-). And, I think I have
given an answer (perhaps not the only one) to your original question
about why various sources for XOR routines use two instructions instead