In <[email protected]>, on 08/05/2011
   at 06:23 PM, Micheal Butz <[email protected]> said:

>A number of the 64 bit instruction Seem to have a constant in 
>the last Byte e.g. LG. 58 STG 50 would anyone know the 
>siginifcance of this

It's part of the opcode, and not limited to "grandé" instructions.
There have been extended opcodes since the System/360, although the
ones that I recall were not in PoOps.
 
-- 
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     ISO position; see <http://patriot.net/~shmuel/resume/brief.html> 
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)

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