25 Dec
2010
25 Dec
'10
11:39 a.m.
On 12/25/10 9:24 AM, "Dave McGuire" <mcguire at neurotica.com> wrote:
On 12/24/10 11:24 PM, Jim Brain wrote:
How are you at Z80 disassembly? It would be nice to get the ATR8000 BIOS
disassembled and turned into something somewhat modular so it could be
redesigned with modern parts :)
Is there a link handy to a minimal schematic.
Alexandre's question
piqued my curiosity, so I went looking, thinking there would be a ez80
Acclaim + SRAM + SD, using the RS232 for a terminal. I can't find
anything that minimal.
I could draw one up.
For the eZ80Acclaim! chips, there's at least one port of CP/M that
I've seen floating around. Those chips are pretty easy to design with;
I've done a few commercial designs with the eZ80F91 (the member of the
family that runs at 50MHz and has an on-chip Ethernet controller).
If true (I'm happy to be wrong), I agree a
small board with the minimal
components might be useful to a wide range of people. But, it would
require someone who can write a BDOS for it.
BIOS, not BDOS...The BDOS is supplied as a standard, not-modifiable
part of CP/M. In any case, I have done several BIOSes (including two
for homebrew Z80 SBCs) and can help with that.
-Dave