First off, use plain text not RTF or other indigestable formats for
messages.
Could that be renamed MP/M or a variant of MP/M?
Could be or Turbodos.
OSs... Although, I suspect that "MLX" is just a security and
multitasking layer for CPM?
Only if it were vanilla CPM as MPM was already multitasking.
I tried to load CPM using a variety of other BOOT images but, so far no
luck. I'll have to drag out some more disks and see any of them will work.
Unlike PCs CPM system had no common bios (commonly none in rom!) so a
booter
from a like machine might boot and run but not work as the IO could be
at different
addresses or even use different serial devices {8250, 8251 and Z80 SIO
were not similar).
Allison