Floppy disk drive with local processor control

Details Floppy disk drive with local processor control Floppy disk drive with local processor control

1982-03-22

1984-10-23

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

G11B 3100

Patent

active

044791542

ABSTRACT:
A disk driving mechanism is provided with a program memory section storing programs corresponding to a plurality of operational modes of the device and a mode set switch for applying an operational mode to an input/output section of the device. A central processing unit is provided for recognizing the operational mode set by said mode set switch, and for operating the device according to a program read out of the program memory corresponding to the selected operational mode. According to the invention, a floppy or hard disk drive may be operated by itself, without the aid of a host computer, for the purpose of self-diagnosis.

REFERENCES:
IEEE Transactions on Magnetics, vol. MAG-14, No. 4, Jul. 1978, pp. 203-206, Microprocessor Applications in Disk Storage Systems, D. Johann.
Electronic Design, vol. 28, No. 22, Oct. 25, 1980, pp. 111-115, Controller for Hard Disks Handles Four Drives at Once, J. Jaworski.
Electronics, vol. 53, No. 10, Apr. 24, 1980, p. 208, Controller Handles Floppies, Fixed Disks B. Le Boss.
IBM Technical Disclosure Bulletin, vol. 22, No. 11, Apr. 1980, Control Interface for Magnetic Disk Drive, pp. 5033-5035, G. Dix et al.
IBM Technical Disclosure Bulletin, vol. 21, No. 1, Jun. 1978, Automatic Access Calibration of a Direct-Access Storage Device, J. Boscove et al., pp. 27-28.

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