25 Dec
2010
25 Dec
'10
6:16 a.m.
On 12/25/2010 07:16 AM, Tony Duell wrote:
Exactly. Mine is modded to 64K ram, 32K "boot disk"
and a 16mb CF for main store.
80% of the software out there is 8080. Those few that are not
are often available in source form and can be patched if needed.
The PX-8 is a CP/M system based on Rom and Ram disk with
hooks for external extension for both greater rom/ram disk or
the floppy device.
Allison
It's too
bad that nobody brought up CP/M on the Kyoceras (Radio Shack
model 100, Nec 8200, etc). THAT would have been a project.
I think a lot of
people (including myself, amazingly) tended to use the
built-in software of the M100, so no reall need for CP/M.
It probably wouldn't be that big a modification (the main part being
re-mappling the memory so there's RAM at location 0 -- in fact a
programmable invesion of A15 would do it). But you'd only have 32K RAM
and an 8085 processor which would limit what you could run.
Or on the
Epson RC20!
The Epson TF20 (floppy drive for the HX20, PX4, PX8, etc) contains a
Z80
and 64K RAM. Oh, and a boot ROM that is mapped out after booting. I have
never analyhsed the system disk in detail, but I have a feeling this
thing runs CP/M internally.
-tony