From: Don Maslin <donm(a)cts.com>
   I bet the
altos can't.  The mixed density format is something only DEC
 did. 
Agreed, but I might be able to read sector content using DU. 
 
Nope, it's m2fm not mfm double density.  Very different encoding and
timing
and none of the WD/NEC/Intel chips do it.  Thats the part that makes it
hard.
Allison