> What is "ESR-style vectored linkage"? ESR just stands for Extended Service Router. It originated as a way to map multiple SVC functions into a single SVC number. SVC 109 is an example.
There is no deep magic involved. Your PC maintains a table, potentially a table of tables of tables... etc. Your caller indicates which specific function is needed via a parameter. The PC looks up the desired function and calls it - typically while handling entry/exit management, interface-level recovery etc. In other words, your single (hardware defined) PC routine serves as a router to an arbitrarily large number of functions. And if you manage it carefully you can even make the set of functions dynamically manageable without having to mess with the entry table. CC ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
