11 Oct
2010
11 Oct
'10
5:57 p.m.
On 2010 Oct 11, at 11:51 AM, Rich Alderson wrote:
From: William Donzelli
Sent: Monday, October 11, 2010 11:36 AM
OK, forgot about that possibility. I was aware of the 1401 (but not
> 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
> non-traditional. 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
level.)