I was muddling.  It is always 64 bit in zArch. 

My point still remains:  save yourself and follow-on programmers time and 
effort 
- put in the comma.  


Lloyd



----- Original Message ----
From: Tony Harminc <t...@harminc.net>
To: IBM-MAIN@LISTSERV.UA.EDU
Sent: Thu, November 29, 2012 12:53:00 PM
Subject: Re: Usefullness (or not) of STOC/LOC instructions?

On 29 November 2012 07:29, Lloyd Fuller <leful...@sbcglobal.net> wrote:

> The latter can also run into issues in AMODE 64.  The index register is always
> 32 bits, not 24, 31, or 64 depending upon AMODE.  Waste the extra nano-second,
> use the comma.  It is meaningful.

I think you're muddling the index register (always 64 bits in zArch)
with the access register (always 32 bits on 370/ESA through zArch). Or
perhaps it was just a typo - 32 was meant to be 64?

Tony H.

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