What I meant was that I remember on early PCs using an rs232-c line for using
the old BBSes and compuserve before it was an ISP. 10 cents a minute. I had
several modems 300, 1200 and 2400 baud modems.
These even older machines may have had hookups within a company. Even one
building connecting 5 or so machines. Serial would've worked fine. And was what
was used. I was thinking with maybe 4-5 PDP8s a company would use some kind of
networking. Perhaps not back then. I was only aware of pdp11 and vax being
"network possible". I guess I was wrong.
Bill
----- Original Message -----
From: Clem Cole
To: Anders Magnusson
Cc: SIMH ; Bob Supnik
Sent: Saturday, March 12, 2016 2:24 PM
Subject: Re: [Simh] [SimH] Networking support
On Sat, Mar 12, 2016 at 12:25 PM, Anders Magnusson <[email protected]> wrote:
DG-UX or MV/UX?
Which was the rewrite of System V ?? i.e. System V cmd system, but
internally developed System V SMP kernel -- I want to say DG-UX maybe; but I'd
been a long time and many beers ago - I've forgotten the name. I remember it
was a very clean UNIX implementation. Nice locking structure, easy to debug,
etc...
Locus was working on different projects with Ultrix, Tru64, VMS, AIX, SunOS,
Solaris, HP-UX, Apollo, DG's UX, some work for Pr1me, ISC's 386/ix, Intel's 386
port, SVR4 for the AT&T/UI guys, and Intel's Paragon at the same time. At one
point, I had the OS release schedules for HP, DEC and Sun all pasted on the
wall behind my desk. I used to say LCC got to see everyone's dirty laundry in
those days. As I said, I do remember the DG Unix re-implementation was very
easy to work on (I will not say which one we cursed the most).
The DG ethernet card has a 82586 on board.
As I said, many beers ago. I'm undoubtedly mixed up a couple of the systems,
since we had so many we worked with in those days. I remember the AMD chip was
a lot easier to program than the Intel device. That said, I suspect that I have
the docs on the Intel chips somewhere, but it sounds like others have the DG
docs which are going to be better for simh purposes.
Clem
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