26 Apr
2007
26 Apr
'07
11:47 a.m.
Subject: Re: Hand-rolling a CP/M machine
From: woodelf <bfranchuk at jetnet.ab.ca>
Date: Wed, 25 Apr 2007 22:22:11 -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.
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 ... :(
26 Apr
26 Apr
11:20 p.m.
Allison wrote:
Manual is on line I think at both Dave and bitsavers.
Off hand I don't see it at bitsavers.
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 ... :(
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