IBM Series/1

Kevin Bowling kevin.bowling at
Sat Aug 3 13:37:24 CDT 2019

I'm pretty sure it was intended as a PLC or more precisely a PDP11
competitor as others stated.  I am reading an excellent book "The
Small Computer Concept" which kind of awe inspiring lays out the need
for the Series/1, the ISA, and monitor functions in 400 pages.

On Sat, Aug 3, 2019 at 10:29 AM Jon Elson via cctalk
<cctalk at> wrote:
> On 08/02/2019 10:04 PM, ED SHARPE via cctalk wrote:
> > Was IBM Series/1 for process control?Ed#
> >
> I don't think it was necessarily DESIGNED for process
> control, it was a decent 16-bit mini.
> But, it did get USED a lot for that application.  They were
> also used as interfaces from the IBM channel architecture to
> serial ports, where the 360/370's were hurt very badly by
> interrupt load.
> Jon

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