Hand-rolling a CP/M machine - test-drb@ccmp.vtda.org

25 Apr 2007

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Subject: Re: Hand-rolling a CP/M machine
   From: woodelf <bfranchuk at jetnet.ab.ca>
   Date: Wed, 25 Apr 2007 15:23:36 -0600
     To: General Discussion: On-Topic and Off-Topic Posts <cctalk at
classiccmp.org>

Ethan Dicks wrote:

  With as fast as CMOS ROMs are today, why not use
a 27C64 and burn your
 own charset to it?  It's not tough to do, but is there a technical
 reason it wouldn't work? 
That works but to find the PROM data you have to look at some very old
memory data books. I have yet to find any nice 8x11? fonts that fit
in a 9x12 character block could be copied.

> -ethan 
Motorola, Signetics or SMC databooks from the 80s.

Or do what I did back in the hazeltine days, graph paper and a book of fonts.

Allison