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djf Beginner
Joined: 06 Feb 2007 Posts: 68 Topics: 27
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Posted: Mon Mar 10, 2008 6:59 pm Post subject: STCK |
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This perhaps shoudln't be in the application programming section, but here goes.
We have an assembler program that does some limited job scheduling, by doing some time/date routines and waiting for ECB's to pop, etc.
It's been acting a bit funky and I have somewhat been led down the path that there might be changes in the last few years in the format of the data returned from the STCK macro.
Can anybody give me any more info on this?
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DaveyC Moderator
Joined: 02 Dec 2002 Posts: 151 Topics: 3 Location: Perth, Western Australia
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Posted: Tue Mar 11, 2008 4:07 am Post subject: |
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STCK is an instruction not a macro and it has not changed. That would break compatibility which is not something mainframes do! _________________ Dave Crayford |
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semigeezer Supermod
Joined: 03 Jan 2003 Posts: 1014 Topics: 13 Location: Atlantis
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Posted: Tue Mar 11, 2008 9:01 am Post subject: |
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There is a new STCKF (Store Clock Fast) instruction but the only difference is a lack of guarantee of uniqueness in the low order bits. If your code is really old, there may be a difference in the S/370 handling of one of the condition codes with z/Architecture on STCK. Format is the same _________________ New members are encouraged to read the How To Ask Questions The Smart Way FAQ at http://www.catb.org/~esr/faqs/smart-questions.html. |
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