29 Jul
2012
29 Jul
'12
4:58 p.m.
> MS-DOS 2.21 and 3.31 were the ones with the most
system specific
> customization, such as different versions of MODE.COM , etc.
On Mon, 30 Jul
2012, Liam Proven wrote:
The only 3.31 I met was Compaq DOS 3.31, which as you
say removed the
32MB disk partition restriction. It ran on anything, of course.
Except that it's MODE.COM (.EXE? (gotta check a copy sometime, and see
what the first two bytes are!)) contained [EGA,CGA] options that are
inapplicable for video boards other than the Compaq ones (that had an
internal and an external video). Certainly wouldn't hurt to run it on
other machines.
But not all vendors offered a 3.31 - it was a special
Compaq thing.
AFAICR Amstrad never did.
Also Morrow? Zenith?? Did HP?
I've run into a few others (certainly not as many as 2.21 machine
specific), but can't list them right now.
Admittedly, vendors without any "non-standard" hardware had no reason to
have one.