> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Lindy Mayfield > Sent: Wednesday, December 20, 2006 6:15 AM > To: [email protected] > Subject: What is a Type-5 SVC? > > > I'm just curious because the numbers for SVC types go from 1 > to 6 with 5 left out. Is there such a thing, or was there > such a thing as a type-5 SVC? > > Thanks, > Lindy
IIRC, a "type 5" SVC once existed as a "place holder" for an SVC number for which an corresponding SVC did not exist. That is, the SVC table was always 256 entries (SVC x'00' to x'FF'). In order to avoid getting a message at IPL time, you could declare an SVC as "type 5" and the system knew that it was unused. This is going off of a very old memory from OS/VS1 days! I think. The memory is encrusted with moss and other detritus. -- John McKown Senior Systems Programmer HealthMarkets Keeping the Promise of Affordable Coverage Administrative Services Group Information Technology The information contained in this e-mail message may be privileged and/or confidential. It is for intended addressee(s) only. If you are not the intended recipient, you are hereby notified that any disclosure, reproduction, distribution or other use of this communication is strictly prohibited and could, in certain circumstances, be a criminal offense. If you have received this e-mail in error, please notify the sender by reply and delete this message without copying or disclosing it. ---------------------------------------------------------------------- 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
