[Info-vax] Troubles with using LCD monitor on Vaxstation 3100/38

[Kerry Main]

> -----Original Message-----
> From: Info-vax [mailto:info-vax-bounces at rbnsn.com] On Behalf
> Of Bart Zorn via Info-vax
> Sent: 06-Nov-16 2:34 AM
> To: info-vax at rbnsn.com
> Cc: Bart Zorn <bart.zorn at gmail.com>
> Subject: Re: [Info-vax] Troubles with using LCD monitor on
> Vaxstation 3100/38
> 
> On Saturday, November 5, 2016 at 2:10:05 PM UTC+1, Kerry Main
> wrote:
>  [ Snip ]
> > if you were using the unit as a VAXstation, you'd remove this
> device
> > and plug the monitor/mouse/keyboard cable into the D15
> connector.
> > This
> > connector provides access to OPA0 and TTA1, used for the
> keyboard
> >
> > and mouse (they're serial, near-EIA232 devices), along with
the
> video
> > leads.  At the other end of the monitor/mouse/keyboard cable
> are three
> > BNC plugs, the mini-modular jack to accomodate DEC keyboard
> cables,
> > and the mini-DIN socket to accomodate the DEC mouse.
> >
> > The D9 connector remains the printer port, TTA3, and the D25
> connector
> > is TTA2, providing full modem control (even CTS, which iis
odd
> given
> > that it's a DZ-like device, but it does).  The box with the
MMJ
> > sockets on it simply converts all of these to MMJ (and
ignores
> the
> > video signals).  "
> 
>   [ Snip ]
> 
> Kerry, most of the time you are very well informed. But this
time I
> think you are confusing VAXstation 3100 series machines with
the
> predecessor, the VAXstation 2000. The latter had a 15 pin D
type
> connector for both video, mouse and keyboard combined, as you
> described (although, IIRC, the mouse had a RJ type connector).
> The 3100 had separate connectors for keyboard (MMJ) and
> mouse (a DIN look-a-like, also like PS-2 but different). Video
was
> 15 pin D type.
> 
> The 3100 could be mono chrome, GPX color or SPX color. The 15
> pin connector carried both the mono chrome signal as well as
the
> color signals. With a special cable you could connect both a
mono
> chrome monitor and a color monitor to have a dual head
> configuration.
> 
> HTH,
> 
> Bart


You are likely correct. Thanks for the clarification.

Btw, when I quoted the above extract from the online article, I
also added "may not apply".

"I thought I made a mistake, but I was wrong..."

:-)

Regards,

Kerry Main
Kerry dot main at starkgaming dot com