On Sat, 29 Oct 2016, william degnan wrote:
Some interesting concurrent CPM and DOS stuff, not
sure if this is really
MS DOS 1.25 or not, never got it to work on my system. I'd love to see
someone else make it work.
Can't help with that right now. Sorry.
Simplest test for MS-DOS 1.25 would the the dates of the files,
particularly IO.SYS and MSDOS.SYS. IIRC, 1.25 would be in 1982, maybe
June.