In some very old code (1975-1985) where storage was severely constrained, the inline halfword was a value from 0-255 for error#s 0-255.
richard -----Original Message----- From: IBM Mainframe Assembler List [mailto:[email protected]] On Behalf Of Seymour J Metz Sent: Monday, August 06, 2018 4:02 PM To: [email protected] Subject: Re: S0C1 >It might be that some SPIE routines handle the interrupt, maybe print a >message, and then allow it through to the OS. I vaguely recall someone using DC H'0' followed by a message in a special format to get a tailored error message via a SPIE exit. >I do still remember S0C0 from the 360/91 days, Multiple imprecise interrupt, as I recall. >I wouldn't have thought of that one. Pretty neat. Not as neat as I thought at the time; see the footnote. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Assembler List <[email protected]> on behalf of glen herrmannsfeldt <[email protected]> Sent: Monday, August 6, 2018 3:55 PM To: [email protected] Subject: S0C1 Shmuel (Seymour J.) Metz wrote: > No; it is guarantied to generate a program 001 interrupt. > You only get an ABEND S0C1 if there is no SPIE/ESPIE exit. I suspect that some use S0C1 as shorthand, and as you note incorrect, description for program interrupt 1.j It might be that some SPIE routines handle the interrupt, maybe print a message, and then allow it through to the OS. I do still remember S0C0 from the 360/91 days, which doesn't mean program interrupt 0, though the low bits will be 0000. Dreaded by anyone debugging from a hex dump. > I've written code that distinguished[1] between a S/360 and a S/370 > with a SPIE[2] for codes 1 and 2; the exit assumed that it was a S/370 > if the code was 2. I wouldn't have thought of that one. Pretty neat. ----------------------------------------- The information contained in this communication (including any attachments hereto) is confidential and is intended solely for the personal and confidential use of the individual or entity to whom it is addressed. The information may also constitute a legally privileged confidential communication. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this communication in error and that any review, dissemination, copying, or unauthorized use of this information, or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. Thank you
