Hand-rolling a CP/M machine

Allison ajp166 at bellatlantic.net
Thu Apr 26 05:47:37 CDT 2007

>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:
>> 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 ... :(

Manual is on line I think at both Dave and bitsavers.


More information about the cctech mailing list