26 Feb
2010
26 Feb
'10
11:19 a.m.
On 2/25/10, Fred Cisin <cisin at xenosoft.com> wrote:
My suggestion (as somebody who grew up with the M1 and later the M3 and
M4) is that uou get a copy of LDOS and learn to use that. It's a much
nicer OS than CP/M. If you want to run CP/M there are, IMHO, nicer
machines to run it on (the Epson QX10 comes high up my list..), but LDOS
only runs on the TRS-80 and clones.
On Thu, 25 Feb 2010, JP Hindin wrote:
Is that available anywhere now? I ask because I have a Model 1 w/dual
external 3rd party drives and a Model III and I know more about CP/M
than I do about TRSDOS. I have a friend with an TRS80 Model III would is
looking for some bootable
media w/TRSDOS and, possibly if available, CP/M...
The TRS80 III, like the 1, had ROM in low memory. and therefore couldn't
run any form of "normal" CP/M. FMG, and a few others, produced a
relocated CP/M for model 1 and 3, but it never caught on, AT ALL. When you see mention of a TRS80 Model 1 or 3
CP/M, it normally means that
the machine has a small but significant hardware mod to permit
switching the memory map around. (That included Omicron, Parasitic
Engineering (Howard Fullmer), Montezuma Micro, etc.)
Is it a "difficult" mod? I.e., would it be worth rolling a modern one? There were also hardware mods for the Expansion
Interface to run 8"
drives.
I'd guess those aren't too difficult to implement these days. I have
a TM848 in the basement (installed in a Dataram PDP-11-compatible
chassis) that might work nicely on that.