🚀 go-pugleaf

"John Varela" <jav...@earthlink.net> wrote in message
news:vd2NzVOTNb7v-pn2-vdi55dTSr5Cy@dialup-63.208.164.65.Dial1.Washington2.Le
vel3.net...
> On Fri, 27 Jul 2001 08:44:00, mikeki...@cix.co.uk (Michael J Kingston)
> wrote:
>
> > I recollect reading that the 9020 was, or at least started as a
> > multiprocessor version of the S/360 Model 40.
>
> 50 and 65.

That matches with the pictures--50 and 65 panels.

>
> > No doubt there were changes
> > and additions to the instruction set.
>
> Principally to manage the multiprocessor configuration.  Test Config, Set
> Config, that sort of thing.  The 9020E, which was used as a display
processor,
> had some additional instructions but I forget what they were.  Line
intercept
> sort of things, to determine what was outside the view of the display, I
> think.  Maybe some special block moves.  The E also had display refresh
> memory.
>

Was Test and Set invented for this purpose? Several articles in
the System Journal (Vol.6, No.2, 1967) mention that instruction repeatedly.
It surprised me--I thought TS had to be older than that.

One last question about this machine (I promise--for now)... Was there
a separate principles of operations published for it, since it introduced
a number of instructions (whether or not TS)?

Regards, Dan House