In both cases they are treated numerically as a whole, For logical instructions
the operands are treated as unsigned numbers. The distinvtion goes back to the
vacuum tube ("valve" for you Brits) machine, well before S/360.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
________________________________________
From: IBM Mainframe Assembler List [ASSEMBLER-LIST@LISTSERV.UGA.EDU] on behalf
of Dave Clark [dlcl...@winsupplyinc.com]
Sent: Tuesday, June 13, 2023 9:20 AM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Shower thought
"IBM Mainframe Assembler List" <ASSEMBLER-LIST@LISTSERV.UGA.EDU> wrote on
06/12/2023 07:07:50 PM:
> -as opposed to what?
The operands are treated logically, bit-by-bit for their length,
as opposed to the full fields treated numerically as a whole.
Sincerely,
Dave Clark
--
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