I have the Xerox Hytype II service manual with
schematics of the infamous Logic I and II boards,
several versions. Let me know the Board #'s and etch
and if I got 'em, I can scan them. I used to repair
these printers (mostly at a board level) in a previous
life.
I don't know if making them into your own CPU would be
practical but there sure is a lot to learn on these
two boards...even now.
--- "Peter C. Wallace" <pcw_at_mesanet.com> wrote:
> On Thu, 4 Apr 2002, ajp166 wrote:
>
> > From: Peter C. Wallace <pcw_at_mesanet.com>
> > >
> > >Hytype IIs also use a 8 bit TTL based microcoded
> machine (IICRC they use
> > >74LS283 adders, 74LS170 register file chips,
> along with bipolar
> > PROMS)...
> > >
> >
> >
> > I have a few of those boards... Wich I had the
> correct prints for the
> > board numbers
> > I do have. Could be fun to bend them into a
> general purpose 8bitter.
> >
> > Allison
> >
> >
> >
>
> I remember playing with that idea many many years
> ago. I dont think it has
> much of an address range though...
>
>
>
> Peter Wallace
>
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Received on Fri Apr 05 2002 - 00:38:51 BST