4 Apr
2002
4 Apr
'02
11:36 a.m.
Hi,
The boards I have are:
assy pn40827-05 rev-6 (has 3 82s181 proms on top edge)
assy 40505 rev-C (has crystal and berg connector on top)
Building a cpu is anything but practical... why should modding
this? ;)
Allison
-----Original Message-----
From: Loboyko Steve <sloboyko(a)yahoo.com>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Friday, April 05, 2002 1:47 AM
Subject: Re: Core Memory Interfacing?
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(a)mesanet.com> wrote:
On Thu, 4 Apr 2002, ajp166 wrote:
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From: Peter C. Wallace <pcw(a)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