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How NOPR works and how this is different from CNOP
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sheersh

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Joined: 24 May 2008
Posts: 17
Location: Gurgaon
PostPosted: Wed Jun 04, 2008 12:16 am
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I saw in some code...

NOPR R0

To ensure boundary allignment....I know CNOP can be used for the same purpose, Please advise how NOPR works and how this is different from CNOP?

Thanks
Sheersh
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enrico-sorichetti

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Joined: 14 Mar 2007
Posts: 10873
Location: italy
PostPosted: Wed Jun 04, 2008 12:26 am
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Quote:
Please advise how NOPR works and how this is different from CNOP


NOPR is an instruction that gets generated unconditionally

CNOP depending on the alignment requested and the value of the current location counter
will generate the numper of NOPR 0 ( 0700 ) needed to fill the gap

here are the details
http://publib.boulder.ibm.com/infocenter/ratdevz/v7r1m1/index.jsp?topic=/com.ibm.ent.asm.zos.doc/topics/fn1lrmst115.htm
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sheersh

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Joined: 24 May 2008
Posts: 17
Location: Gurgaon
PostPosted: Wed Jun 04, 2008 12:55 am
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Thanks for such quick response....

If I've understood correctly....
(DS 0H) will do the same thing as single NOPR.
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