[TUHS] UNIX on S/370

Toby Thain toby at telegraphics.com.au
Tue Nov 21 03:44:38 AEST 2017

On 2017-11-20 11:47 AM, Charles H Sauer wrote:
> I was waiting for Clem to weigh in on this, since I assume he knows more
> about it than I do.
> I wasn’t paying much attention to Unix on 370, but my impression has
> always been that there were multiple 370 ports. The only ones that were
> completed, to my knowledge, were the ESS one and AIX/370. I don’t know
> of the ESS one being available outside of AT&T.
> I don’t know anything about the compilers used, would assume they were
> PCC-based, even if provided by IBM.

Yes, Johnson's paper[1] lists pcc's targets as Honeywell 6000, IBM 370,
Interdata 8/32, DG Nova, "and others".

>From time to time I wonder what became of those pcc versions...


[1] https://dl.acm.org/citation.cfm?doid=512760.512771

> In 1989, when I left IBM, there were certainly plenty of 370 people
> inside IBM that would have understood 370 channels. ...
> Charlie
> *From:* Clem Cole
> *Sent:* Monday, November 20, 2017 10:37 AM
> *To:* Noel Chiappa
> *Cc:* The Eunuchs Hysterical Society
> *Subject:* Re: [TUHS] UNIX on S/370
> On Mon, Nov 20, 2017 at 11:05 AM, Noel Chiappa <jnc at mercury.lcs.mit.edu>
> wrote:
>     Maybe this is my lack of knowledge of VM showing, but how did having
>     VM help
>     you over running on the bare hardware?
> ​As an IBM person, I would ask Charlie to answer here, but I believe the
> answer from the Locus side was tools​ primarily and I also think they
> did not have to support as much specific HW (/i.e./ smaller foot print
> of devices).

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