On 10/26/25 01:40, Tony Nicholson wrote:
> 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?
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 -
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