Inventors:
Alan F. Arnold - Boca Raton FL
Arthur R. Wheeler - Boca Raton FL
James Tai - Deerfield Beach FL
Assignee:
International Business Machines Corp. - Armonk NY
International Classification:
G11B 1512
Abstract:
This invention relates to personal computers, and particularly to a personal computer having provision for identifying the type of direct access storage device associated with the computer and further identifying the storage capability of removable media used in the device. The apparatus disclosed uses certain ones of a plurality of signal communicating pathways extending between a storage device and a controller to distinguish between the absence of signals as indicating the presence of an older type drive and the presence of signals as indicating the presence of a newer type drive, the pattern of said signals further indicating the type of media inserted into the device with which the controller is communicating.