[HECnet] MMJ to DB9 serial adapter

[Johnny Billquist]

On 2013-10-06 01:01, Brian Schenkenberger, VAXman- wrote:
Johnny Billquist <bqt at softjar.se> writes:

On 2013-10-05 22:27, Dave McGuire wrote:
On 10/05/2013 11:45 AM, Johnny Billquist wrote:
Second, DEC often used a different pinout for a DE9 than IBM did, so you
might not be too happy with the adapter, depending on what you want in
the end.

      In this case, the DEC-machine-facing side is the MMJ.   (at least that
is my understanding)

Mine too. But he was asking for a MMJ to DE9 adapter as well. And I was
pointing out that the (most) common adapter is not IBM PC compatible.

I don't believe that the most common MMJ adapters are NOT PeeCee compatible.
I have and I have come across manymnay more that are PeeCee compatible that
those that are not.   The original 9-pin pinout was abandoned pretty early on
in the MMJ adapter history.   See the OpenVMS FAQ for actual part number for
these adapters.

http://www.hoffmanlabs.org/vmsfaq/

Maybe I'm wrong. But I have a number of MMJ-DE9 adapters, received from multiple sources, but I do not have a single one which is PC compatible.

	Johnny