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Re: Unidos Questions

On Fri, 4 Nov 2005, Jeff Blakeney wrote:


DOS 3.3 can access volumes up to 400 KB in size.  That is why the DOS
3.3 variants for 3.5" floppies usually give you four drive numbers per
slot instead of two.  I'm guessing you knew that and the "140K" above
was just a "typo".  :-)


I meant 140, since it could only by default access disk ][ drives.


I can't remember which way UniDOS does it but one 3.5" DOS 3.3 I used
you could access the entire 800 KB as two drives.  One at slot 5,
drive 1 and the other at slot 5 drive 3.  If you had two 3.5"
floppies, the second 3.5" drive was accessed as slot 5, drive 2 and
slot 5, drive 4.


Like that.


I always wanted a DOS 3.3 variant that realized I only had one 3.5"
floppy and would let me access the two 400 KB volumes on that drive as
slot 5, drive 1 and 2 so that I could use programs that were designed
to work with two drives on that single 3.5" disk.  There are a lot of
programs that won't let you enter drive 3 or 4 because they think
those values are out of range.
That would be nice. :/ As would a hack of Copy ][ Plus 4 or 5 that supported Unidos. :\ 

-uso.