Minimal CP/M SBC design?

[Richard A. Cini]

On 5/4/08 3:57 PM, "Ethan Dicks" <ethan.dicks at usap.gov> wrote:

> Hi, all,
> 
> I was staring at an SBC I have here with a 6MHz Z-80, some ROM, some RAM,
> and a 26-pin off-board bus for some Z80-PIO boards (this thing was built
> as a multi-parallel-printer switcher).  I've been musing about what it
> would take to boot CP/M up on this.
> 
{snippage} 
> -ethan

I know and appreciate the DIY nature of this, having worked on a few 6502
SBC designs even though there were a few out there already, but maybe take a
look at the P112 (http://frotz.homeunix.org/p112/) for some inspiration.
IIRC, it's the size of a 3.5" floppy drive. I actually built one of the
original versions but I never got down to using it much. I might have to
pull it out and play with it now that I know more about bringing up a CP/M
system than when I did back then.


Rich

--
Rich Cini
Collector of Classic Computers
Build Master and lead engineer, Altair32 Emulator
http://www.altair32.com
http://www.classiccmp.org/cini