On 24 Apr 2007 at 7:48, Allison wrote:
  One thing, you do not have to use D8-15!  Sur you give
up half the data
 in a sector but you also eliminate a lot of hardware.  That and even an
 old 100MB drive will yeild 50mb which by CP/M standards is the world in
 a bottle. 
I've seen that done on at least one TRS-80 lashup.  You need to
remember that your sectors thus accessed are 256 bytes and not 512,
which may not be a bad thingl for CP/M.
Cheers,
Chuck