The Device Manager in {HEAD ~ the Macintosh operation system} is described in Inside Macintosh, {TAIL ~ Volume II}, Chapter 6, pp II 187 208, Addeson Wesley Publishing Co. Inc.  
The Device Manager in { HEAD ~ the Macintosh operation system } is described in Inside Macintosh , { TAIL ~ Volume II } , Chapter 6 , pp II 187 208 , Addeson Wesley Publishing Co. Inc.
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH