<snip> I have read all the available documentation and it tells me how to mechanically do everything from the PRIMARY, But it does not tell me how the PC rtns are used </snip> The IBM publication with the most information is the MVS Extended Addressability Guide.
I may not be getting at what you mean by "how the PC rtns are used" but I'd hope that this was fairly apparent to anyone who is investigating this topic. PC routines are just programs. How you use a program is up to you. But why a PC and not a branch? Because of any of the operations that are unique to PC's: change state, change key, change primary address space, etc. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
