25 Apr
2007
25 Apr
'07
5:27 p.m.
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:
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
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