Brad,
  I think you may struggle. Looking at the early 6800 Journal there are many boards, which
can use Gimix ?Ghost? addressing and are supported by the GMXBug includes the driver
software.
https://sites.google.com/a/aaronwolfe.com/cococoding/home/magazines/68-micr…
volume 1 n 5 Page 3 (P5 in the PDF) has a Gimix advert. There is a GMBBUG 02 manual on the
flex user group site, but it stops at the chapter before the screen i/o routines?.
http://www.flexusergroup.com/flexusergroup/pdfs/gmxmon2.pdf
&
http://www.flexusergroup.com/flexusergroup/pdfs/gmxbug2.pdf
Yuk
Dave
From: Brad H [mailto:vintagecomputer at 
bettercomputing.net]
Sent: 24 March 2017 17:58
To: dave.g4ugm at 
gmail.com; 'General Discussion: On-Topic and Off-Topic Posts'
<cctalk at classiccmp.org>
Subject: RE: GImix Ghost Video Board
No.. mine has a 2513 character generator.. the one in the ad uses ram based character
generation.  Based on IC dates my board looks like mid to late 70s.. a fair bit earlier
than that one.
Sent from my Samsung device
-------- Original message --------
From: dave.g4ugm at 
gmail.com
Date: 2017-03-24 2:16 AM (GMT-08:00)
To: 'Brad H' <vintagecomputer at 
bettercomputing.net <mailto:vintagecomputer
at bettercomputing.net> >, "'General Discussion: On-Topic and Off-Topic
Posts'" <cctalk at 
classiccmp.org <mailto:cctalk at classiccmp.org> >
Subject: RE: GImix Ghost Video Board
Is it one that's in the catalogue here:-
http://bitsavers.trailing-edge.com/pdf/gimix/Gimix_Catalog_Jun82.pdf
Dave
  -----Original Message-----
 From: cctalk [mailto:cctalk-bounces at 
classiccmp.org] On Behalf Of Brad H 
via
  cctalk
 Sent: 23 March 2017 23:58
 To: 'General Discussion: On-Topic and Off-Topic Posts'
 <cctalk at 
classiccmp.org <mailto:cctalk at classiccmp.org> >
 Subject: GImix Ghost Video Board
 Hoping someone might be able to help me on this.
 I got a Gimix Ghost SS50 video board today and was trying to find a 
manual.
  I'm sure these were used in Gimix's own ghost
systems but the very limited
 info I've come across out there suggests they may have worked with any
 SS50 system.  It basically provides a direct composite video feed out from 
the
  computer, I assume bypassing the need for a terminal.
I plugged it in and
 fired it up on my SWTPC 6800 and it is working - I think - it generates a 
full
  screen of readable random characters.  However it does
not put up anything
 from the computer - that still goes out via terminal.  I'm assuming Ghost
 systems were wired up somehow to use this.. I'm hoping to find a manual
 that explains how.  I don't see a keyboard interface for it anywhere so 
maybe
  this went along as a complete Ghost system with
hardware I don't have.
 Thanks if you have anything!