CP/M-86 - test-drb@ccmp.vtda.org

1 May 2002

...
  On Wed, 1 May 2002, Douglas H. Quebbeman wrote:
   OK, so
who knows the sequence and differences between:
 MP/M-86
 Concurrent CP/M-86
 Concurrent PC-DOS (announced by DRI at Comdex, because IBM did NOT
 trademark "PC-DOS" ("It's a description, not a name"), but 
 then DRI backed down and changed the name)
 Concurrent DOS
 DR DOS  Very good, Fred! The answer to your question is "Fred Cisin"!

 Well, you confirmed my guess as to the sequence, but it wasn't a
 rhetorical question. I really DON'T know what the differences are. 
Oops! My bad...

MP/M-86: multiuser, multi-terminal version of CP/M. Supports
         more memory than CP/M-86 though...

Concurrent CP/M-86:
         MP/M-86 with multi-terminal support removed. User can
         run multiple programs simultaneously.

Concurrent PC-DOS:
         Concurrent CP/M-86 with support for Microsoft loader
         conventions, Microsoft disk formats, etc. while pre-
         serving existing CP/M-86 program & media support

Concurrent DOS:
         Don't know the differences but whatever it is it's
         Concurrent PC-DOS modified to do <xyz>

DR DOS:
         Lots of support added for stuff like running mouse
         and network drivers in upper memory blocks, etc.
         Generally a catch-up revision of the previous
         product, but was already surpoassed by the latest
         Microsoft DOS.

hth,-dq