Author: Eugene Nalimov
Date: 20:33:36 11/16/01
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There were no executable prefixes on the CP/M. OS loaded executable image to memory starting form address 0100H and just "jmp 0100H" after that. Eugene On November 16, 2001 at 18:56:49, Christophe Theron wrote: >On November 16, 2001 at 17:18:21, Dan Andersson wrote: > >>They are related. CP/M was written by Gary Kildall, the founder of Digital >>Research. It is true that the road from CP/M over CP/M86 to DR-DOS is a bit of a >>stretch. But MS-DOS 1.0 was a CP/M knockoff in the beginning and then the same >>could be said for MS-DOS not being related to itself. >> >>MvH Dan Andersson > > > >I guess Tom wasn't born at that time. :) > >Until today, the PSP (Program Segment Prefix) of ".com" DOS executables contains >CP/M-like jumps to the system. That's the way CP/M programs had to call the >system. > >In other words: CP/M compatibility (or fossils of it) is still built in the >latest versions of Windows, including XP! > > > > Christophe
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