26 Apr
2007
26 Apr
'07
10:40 p.m.
Subject: Re: Hand-rolling a CP/M machine
From: woodelf <bfranchuk at jetnet.ab.ca>
Date: Thu, 26 Apr 2007 16:20:17 -0600
To: General Discussion: On-Topic and Off-Topic Posts <cctalk at
classiccmp.org>
Allison wrote:
Manual is on line I think at both Dave and bitsavers.
Off hand I don't see it at bitsavers.
the stufffs out here. Here's Dave's site and page.
http://www.classiccmp.org/dunfield/s100c/index.htm
Scroll down the page to Processor tech it's a 6mb PDF but that
manual has sources for the Driver program, listing of the pattern
for the character rom and operating theory.
Else where on the same page are several other S100 boards that do
video some are 64x16 and at least one is 80x24.
Dave happens to have a well organized site for old computer history.
Allison
You have to be kidding me. All you need is a 2764 and
a programmer.
It's a ROM and the pattern is in the manual, what could be easier?
Actually if someone were building I'd suggest using a 2764 over the
part used on the VDM1 as that was a two or three voltage part and
27C64(or even a 27C256) is common as flies plus lower power.
Well if I still had
the manual let alone the the VDM ... :(