Date   : Thu, 04 Jun 1981200:34:00-MDT
From   : Ronald G. Fowler <RGF@MIT-MC>
Subject: RESETING DRIVES

  Bill, you CAN reset individual drives if you're using CPM2;
there is a function described in a DR field update that was
left out of the CPM Interface guide.  It is function 25: RESET
DRIVE.  You call function 25 with a vector of drives to be reset
in DE reg...ie, a 1 indicates reset requested.  The least sig-
nificant bit represents drive A.  I don't believe anything is
returned to indicate success/failure in CPM; MPM returns a 0
if no process is accessing the requested drive, 0FFH otherwise.
  Keith: can you point Bill to the file here on MC?  I believe
you sent a note down to info-cpm that you had downloaded the
file, but I have lost track of what it's name is.
      ---Ron