Ah, I seem to have been waylaid by some of the older mentions there - thanks for the link with mention of M-DOS. I was certain of DEC connections, but thought i

Ah, I seem to have been waylaid by some of the older mentions there - thanks for the link with mention of M-DOS. I was certain of DEC connections, but thought it came through CP/M and forgot to take into account PDP-10 history of Microsoft.