Data handling equipment for use with sequential access...

Details Data handling equipment for use with sequential access... Data handling equipment for use with sequential access...

G - Physics

11

B

352/19.4

G11B 17/00 (2006.01) G06F 3/06 (2006.01)

Patent

CA 1132251

A B S T R A C T The invention provides in a disc buffer peripheral access- unit a random access memory which is equivalent in storage size to one complete disc track, and includes command and status registers located at the start and finish addresses respectively of each sector of the track. When a transfer is required, the control-register of each sector involved in transfer is programmed with the track-identity by the disc-handler process. When a sector is read-out and stored in the corresponding area of the buffer, the relevant status-register is correspondingly updated. This permits processor interrogation, of the status- register for the particular sector at any time. Multiple transfers may be performed by using a status/command resister-map in a storage segment accessible to the disc-handling process.

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