26 Jun
2007
26 Jun
'07
2:48 p.m.
--- Chuck Guzis <cclist at sydex.com> wrote:
On 26 Jun 2007 at 12:59, Chris M wrote:
We all know about those ;)
Keep in mind there are at least a few Intel
based
boxes that won't even run DOS at all.
They may not run MS-DOS as configured for the
"standard IBM PC"
platform, but Microsoft offered OEM versions that
could be configured
with the customer's own I/O routines. This was very
common between
versions 1.x (1.25 was a common version) through
2.1. I have at
least one such here, complete with Microsoft's own
"How to write an
I/O subsystem for DOS" documentation.
There were a few Unisys '286 boxes that UIM don't run
DOS. The Televideo Personal Mini PM/4t/PM/16t don't
run DOS (not natively anyway). I'm sure the Northstar
Dimension don't neither. There are others. Burroughs
ICON? UK/French/Japanese boxes??? Granted such a DOS
could be configured to run on these machines, but
ultimately that goes w/o saying, and that's besides
the point and cheating.
I believe that Bill Godbout offered PC-DOS for his
85/88 and 86 CPU
cards, where IBMBIO.COM had been replaced with
drivers specific to
the Computro line. Microsoft was not interested in
licensing small
numbers of MS-DOS, so Godbout started with a
standard $40 IBM PC-DOS
package.
Compupro? Yeah, whenever I get offered one, amongst
other things, the hoser backs out.
FWIW, I was in contact w/a dude in the Chicago area
some time ago who had been working on a mod for the
Tandy 2000 that would make it 100% PC compatible. It
involved an extensive rewrite of IO.sys, which I had
thought would be a big no-no, but from what you're
saying, not really. I do believe he was hacking
Tandy's specific DOS though. Never finished it sadly.
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