I don't know of any material that supports your goal, but I definitely agree with you that it's a good idea. In particular, starting with relative branches and immediate instructions will make them better programmers from the start.
As for reentrancy, I might start with a macro set that provides prolog/epilog code (e.g. LE has these). At the beginning, treat them as black boxes, but explain what they do and how they work later on. You can (probably must) expand on linkage conventions at some length. But starting with the "rule" that you shouldn't modify your program, even though you *can* shouldn't be a huge additional burden. Of course, you didn't say you wanted advice on creating your own. Good luck. sas ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
