[HECnet] Bringing up a MicroVAX 3100-80

[Supratim Sanyal]

Thanks everyone. I found a H8571-J adapter at eBay which should address 
the PC serial port connection, as well as a "Unicom ETP-20028T-2" which 
is a rather cute "AUI cable, transeiver and patch cord all-in-one". Both 
should be here by April.

What is "jabber" ?

Also, the serial OPA0: runs at 9600/8/N/1?

On 3/26/20 10:04 PM, David Cooper wrote:
> Actually, port 0 is the console port, depending on the position of the s1 switch.  Simply try both positions and one will work.
>
> I only use my MicroVAXen and VAXstations with console terminals.  I don't have any of them hooked up to displays or mice or keyboards.
>
>
>
> -----Original Message-----
> From: owner-hecnet at Update.UU.SE <owner-hecnet at Update.UU.SE> On Behalf Of Robert Armstrong
> Sent: Thursday, March 26, 2020 6:56 PM
> To: hecnet at Update.UU.SE
> Subject: RE: [HECnet] Bringing up a MicroVAX 3100-80
>
>> John H. Reinhardt <johnhreinhardt at thereinhardts.org> wrote:
>> The OPA0: port is #3 (don't ask me why)
>    In the VAXstation (NOT MicroVAX), starting with the 2000 family, serial ports 0 and 1 were for the keyboard and mouse.  Port 2 was for the modem/communications, and port 3 was for the printer.  VAXstations didn't normally need a serial console, but if you had to connect one for some reason the printer port was used.  They couldn't use ports 0 or 1 because those were needed for the keyboard/mouse, and I guess DEC decided they wanted to keep the modem port open.  The MicroVAX-2000 and 3000s are the same hardware as the corresponding VAXstation, and DEC kept the serial port assignments the same.
>
> Bob
>
> This web site has just about everything you want to know about DEC modular wiring and their parts (plus a lot more, check out the RS-232 pages)).
>
> <https://www.lammertbies.nl/comm/cable/dec-mmj#bc16>
>
-- 
Supratim Sanyal, W1XMT
39.19151 N, 77.23432 W
QCOCAL::SANYAL via HECnet

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