Re: DOS 3.3 400k volumes

[Rob Greene <greeneratcharterdotnet>]

steve@dosius.zzn.com (Dosius) wrote in
9307085f.0212091547.2cbc5310@posting.google.com:">news:9307085f.0212091547.2cbc5310@posting.google.com: 

> me@lazilong.com (Lazarus I. Long) wrote in message
> news:<68a2ec1b.0212090838.6d206603@posting.google.com>... 
>> "Joel" <joelbuckley54.nospam.@hotmail.com> wrote in message
>> news:<51CdnQFVIaB3_WmgXTWcow@comcast.com>... 
>> > I did a little searching.
>> > I came across 3 different versions of DOS 3.3 on a 3.5 disk.
>> > 
>> > AmDOS
>> > OzDOS
>> > UniDOS
>> 
>> what i'd like to know is, regardless of how the software runs, are
>> the *formats* the same for all three?  I mean, can they all *read*
>> each other's disks?  ie: they all use 32 sectors and 50 tracks with
>> the VTOC on {$11, $0}?  I can verify that UniDOS does.
> 
> I have an interest in trying and will try UniDOS and AmDOS on ApplePC
> and Dapple. :� 
> 

I got a copy of OzDOS, and it uses the same format.  The ordering is 
different, however.  UniDOS maps the 1st 400K to logical disk 1 and the 
2nd 400K to logical disk 2.  OzDOS appears separate each block in half - 
the lower 256 bytes to one logical disk and the upper 256 bytes to the 
other logical disk.
-Rob