Hi Peter, Thanks very much for your answers. Perhaps I should be more specific about my questions:
What is the range of numbers for an SVC routine that is invoked by SVC 109 that are reserved for IBM use? What is the entire range that can be user-written SVC routines that are invoked by SVC 109? Can a user-written SVC routine invoked by SVC 109 be a type-3 or type-4, or is it only type-4? Surely, if there is a link to the docs that you can point me to where I can read this, I'm happy to do the work myself. (-: I just didn't find it (yet). Happy Holy Days! Lindy -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Peter Relson Sent: Friday, December 22, 2006 2:50 PM To: [email protected] Subject: Re: Question about SVC 109 SVC 109 by itself might be said to consist of just a table which identifies the extended SVC routines. That table is treated the same as a type 2 SVC, being in the nucleus, and having its name formed by the standard nucleus SVC convention of "IGC" concatenated to the decimal SVC number. The extended SVC routine that a user provides are expected to be in LPA (which is part of the definition of a type 3 / type 4 SVC). Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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

