13 Nov
2025
13 Nov
'25
6:20 a.m.
On Wed, Nov 12, 2025 at 7:07 AM Dave McGuire <mcguire(a)neurotica.com> wrote:
On 10/26/25 01:40, Tony Nicholson wrote:
Dave,
I went looking through my web bookmarks for the links to run CP/M-2.2 on the
eZ80F91 (which also requires the Zilog ZDS IDE). Ths link I have is dead -
but
luckily the wayback machine has it at -
https://web.archive.org/web/20120109082747/http://www.shaels.net/index.php/…
There are some documents and a zip file containing the project source and
zdsproj build files. The built CP/M system is then flashed to the
development board
flash memory. It supports a simple IP/UDP protocol stack that can access
disk
images served by the Z80emu Windows program by the same author (it
implements
his RDISK protocol).
I know I had to juggle through numerous ZDS versions to get one that worked
with
my ZPAKII flash loader - namely ZDS II eZ80Acclaim! 4.11.0 (Build 07071801).
If you need a a copy of this particular ZDS or the other files, let me know
and I can
put them up on my Google Drive or on one of me HECnet nodes for you to grab.
Tony
--
Tony Nicholson <tony.nicholson(a)computer.org>
Separately, what is this, if I may ask?
I did several commercial
designs with eZ80 microcontrollers (specifically eZ80F91) many years
ago. I liked them a lot, but Zilog's toolchain wasn't very good, and
the whole ecosystem was displaced (for my work anyway) by ARM (now
ARM
and RISC-V) with GCC. Much better overall
but lacks that sexy "Z" on
the package.. ;)
It is indeed a eZ80F91 evaluation board, set to run CP/M 2.2 with shared
drives
over Ethernet. I can connect to it from a VT220 or from other systems
using
Kermit/XMODEM via LAT (or the Telnet gateway on
the Lantronix).
This is very cool. I still have my old eZ80F91 eval board; is this
setup documented somewhere such that I may replicate it?