24 May
2002
24 May
'02
6:05 p.m.
On Fri, 24 May 2002, Doc wrote:
I'm pretty sure DOC is correct on this one. AFAIK you can't use anything
other than port 0 or 3 as the console.
[1] I think this should be 0, but could be 1.
-- Pat
On Fri, 24 May 2002, Bob Lafleur wrote:
Actually, this depends on the setting of the micro slide switch on the
back of it. One position (BREAK ENABLE, IIRC) uses MMJ0[1], and the other
position (BREAK DISABLE) uses MMJ3. Don't ask me why DEC did such an odd
thing.
My "new" Microvax 3100/90 has 4 serial
ports, 3 MMJ's and one DB25-M. The
MMJ's are numbered 0, 1, and 3, and the DB25-M is labeled 2. I assume the
one labeled 0 is the console OPA0 port. There is a big yellow sticker above
the ports that says "0 OPA0" but it has a big arrow pointing to the RIGHT.
(the ports are numbered 0, 1, 3, 2 from left to right). This sticker seems
to be really odd.
OPA0 is port 3, the rightmost MMJ. > My MMJ cable should arrive Tuesday. I'm
planning to connect to my PC serial
> port and use a terminal emulator to control the console. I assume I need a
I hope you have better luck than me. I've never had any luck in getting
an MMJ (RS-423?) console port to work right with a PC's serial port, but
it could just be my stuff....
null-modem/crossover cable to go from my PC COM port to the MMJ jack...
Correct me if I'm wrong.
The MMJ cable is a crossover cable itself. You just need an adapter
to match up with the PC's serial port.
Does anyone know if it is possible to use the
DB25-M port as OPA0 instead,
like you can on the VAXstations? My MMJ will be here on Tuesday, but if I
could use the DB25-M, I could get my machine up and running this weekend :)
Not that I know of.