Re:Windows 3.x looks for 3 occurrences of “CON” 59 bytes apart
by LocalH on Sunday June 30, 2019 @12:34PM
(#20319009)
IBM DOS was basically MS-DOS (except IBM did do some of their own work of course). Pretty sure Zenith and Compaq DOSes were OEM MS-DOS (Zenith did have a "Z-DOS" but it was just another OEM version of MS-DOS for a non-IBM-compatible system). DR-DOS was of course a true third party DOS (one of the very few contemporary ones IIRC)
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Re:Windows 3.x looks for 3 occurrences of “CON” 59 bytes apart
by ksaj on Monday July 01, 2019 @04:45PM
(#20329556)
Reading the source code (which is available on archive.org) you can see exactly this. Lots of IFDEF statements for compiling MSDOS and PCDOS differences. When I first saw that, I was really surprised.