Date   : Fri, 09 Dec 1983 1721 :00EST (Friday)
From   : George.Wood@cmu-cs-a
Subject: Re: CP/M80 and CP/M86

While the disk formats, i.e 8", sssd, 128 byte/sector, can be used by
both cp/m-80 and cp/m-86, they have different directory structures. I
don't know the specifics, but I think '86 keeps the date of the last
file modification with the directory entry. 
       If you can figure out the directory format for '86, you should 
be able to read & write with DUU; but it would probably be exasperating.
It seems to me that a conversion program could be built by around duu --
any takers?
                                               George
(ps: I'd appreciate pointers to more info on the cp/m-86 directory structure)