Jochen Kunz <jkunz@unixag-kl.fh-kl.de> asked;

> I converted a VAXstation 4000/60 to a /90 by replacing the main system
> board. The new machine works well:
>  ...
> Is the /60 graphics board not compatible with the /90 main system board?

You've got the right answer, indeed.   Check and see the following to learn
all about what model 90 really is;

http://research.compaq.com/wrl/DECarchives/DTJ/DTJ707/DTJ707SC.TXT

(there should be PDF format of DTJ somewhere in net.  I've the article above in
PDF...)

Toru Nishimura