Ah, the weirdities of PC formats

Fred Cisin cisin at xenosoft.com
Tue Sep 19 14:25:31 CDT 2006


> >First official support for 3.5" in PC-DOS was V3.20.
> >First official support for 3.5" in MS-DOS (OEM'd) was V2.11.
> >A few machines added support for 3.5" on their own (HP, Gavilan, etc.)

On Mon, 18 Sep 2006, Chuck Guzis wrote:
> Any DOS (PC or MS) could support 720K with a DEVICE= driver after version
> 2.0.

I was thinking of support WITHOUT an additional device driver.
(DRIVPARM was NOT a device driver, and didn't occupy extra RAM)

> I still have the OEM customization guides for MS-DOS 1.25 and 2.00.   The
> preface to 2.00 states that eventually it would support the entire set of
> Xenix functions.  Uh-huh.
any hope of a copy?


> One could in  PC-DOS 3.?0  use DRIVPARM in CONFIG.SYS but you had to suffix
> the  DRIVPARM with a string of control-A's.

3.20


> I think MS would love to kill off floppy support entirely.



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