After Doug's message, I carefull re-read this, and I'm not sure it's correct?
The PDP-11 has pre-decrement and post-increment, not the other way around (as
above) - unless I'm misunderstanding what you meant by those terms?
Thank you! Post in haste, repent at leisure; but if I don't post in haste these days, I won't be able to post at all....