[Info-vax] Reading Gordon Bell's VAX strategy document
John Dallman
jgd at cix.co.uk
Mon Sep 25 02:48:00 EDT 2023
In article <6c594b48-68c2-4400-9f79-9fc15635ceefn at googlegroups.com>,
gah4 at u.washington.edu (gah4) wrote:
> The most important thing you want, when you start reading an
> instruction, is to know where the next one is. For IBM S/360,
> you always know from the first byte where the next instruction
> is. Even with the above change, it isn't easy for VAX, but
> would be close.
I wonder if that was deliberate for S/360? The original paper on the
architecture does not mention anything about the encoding; a really old
copy of the "Principles of Operation" would be interesting.
John
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