[Simh] [SimH] Networking support

Sat Mar 12 14:36:27 EST 2016

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 <ragge at ludd.ltu.se> 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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