Date   : Tue, 19 Feb 1991 19:39:28 GMT
From   : maverick.ksu.ksu.edu!iowasp.physics.uiowa.edu!syswtr@uunet.uu.net
Subject: Motor on and Drive Select

  Most of the floppy varieties I have seen are jumperable to allow the
MOTOR-ON signal to control the motor without also using DS.  That is,
MOTOR-ON turns ALL motors on.  This should eliminate any problems
with motor spin-up delays when moving from drive-to-drive.
  In some of the older 8" systems we have about, I set the 8" drives
to all load the head at the same time (whenever head-load was asserted)
to eliminate head settling delay when moving from drive to drive.
Willy