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rnanavaty · Beginner Joined: 12 Apr 2006 Posts: 29 Topics: 20

I am unable to interpret the following sentence due to L' and didn't found it in manual also: For ex

LA R6,L'KENTRY(R6)

Here KENTRY is a field of 7 bytes and R6 points to one table defined as

KCAN DS 0CL7

DC C'901010',C'1'
DC C'931010',C'1'
DC C'931310',C'1'
DC C'931410',C'1'

How we can use this table by defining only 7 bytes. It is clear that we can one entry at a time but what exactly L' helps in it???

kolusu · Posted: Sat Feb 17, 2007 7:07 am Post subject:

rnanavaty,

L' is a data attribute which gives the number of bytes that data occupies in storage.

Check this link which explains in detail about all the data attributes.

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/ASMR1003/9.3?DT=20000721044852

The length attribute is explained in 9.3.3

Hope this helps...

Cheers

Kolusu
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Kolusu
www.linkedin.com/in/kolusu

Bill Dennis · Posted: Tue Feb 20, 2007 2:34 pm Post subject:

If the size of KENTRY changes to 8 bytes, the instruction doesn't need to change.

It would need changing if it were:

LA R6,7(R6)
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Regards,
Bill Dennis

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