RX8E Replacements (was DEC UNI/Q-BUS board physical size?)

vrs vrs at msn.com
Wed Mar 9 04:44:11 CST 2005


> > I also have one complete drawing for an RX8E replica (quad height), but
I
> > haven't built one.
>
> Hey, that's interesting!
> How much do you think it'd cost to build one?

The problem with the straight replica is that the parts for an RX8E have
become unobtanium.

I do have an adaptation of the RX8E for modern components and Posibus.  I
have built one of those (but it has nothing to do with DEC board physical
sizes).  Another list member and I are hoping to get around to debugging the
prototypes "real soon".  You'd need an M8350 (or Posibus PDP-8) for one of
those.

Another possibility would be to "fix up" the RX8E with modern (well,
obtainable anyway) chips, and make that.  (But I like the Posibus idea
better, as more PDP-8s can play.)

As to the cost, it's pretty reasonable.  Could probably be done for about
$12-$15 or so per board, in reasonable quantity (say, 30 units).  Plus
parts, shipping, etc. probably still under $50.

(We paid more for the prototypes, but then we didn't spread the cost over 30
units, either.)

    Vince

By the way, you seem to be generating a redundant "Reply-To:" header on your
mail to cctalk.



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