IBM System 3 / was Re: VTL/Dutchess logic
hilpert at cs.ubc.ca
Mon Oct 11 19:57:38 CDT 2010
On 2010 Oct 11, at 11:51 AM, Rich Alderson wrote:
> From: William Donzelli
> Sent: Monday, October 11, 2010 11:36 AM
>>> Just curious about the architecture: at the programmer's level did
>>> it look
>>> like a primarily 8-bit machine, or a 16-bit machine which always
>>> processed 2
>>> bytes in sequence, or it would best be described as mixed 8/16?
>> S/3s worked with strings of bytes in memory, basically. Very
OK, forgot about that possibility. I was aware of the 1401 (but not
from direct experience).
> Not for IBM. The 1401 was very much a character-oriented machine.
> The S/3 was not, in general, programmed by user programmers in
> anything other
> than RPG III, which went on to be the programming model for the
> System/3x and
> AS 400 families; IIRC the original RPG was a 1401 program product.
(I should have said machine-instruction level rather than programmer's
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