Method and apparatus for temporarily storing multiple data recor

Details Method and apparatus for temporarily storing multiple data recor Method and apparatus for temporarily storing multiple data recor

1986-09-26

1988-12-20

Shaw, Gareth D.

Boots, shoes, and leggings

364900, G06F 700

Patent

active

047928980

ABSTRACT:
Method and apparatus for temporarily storing multiple data records in a data processing system which includes a host computer, a cache buffer subsystem, and a magnetic tape drive subsystem. A microprocessor, acting in part as a cache manager, directs the transfer of data into and out of a memory in the cache buffer subsystem by setting up a fill address register, a drain address register, and a start of record address register. Through utilization of a CRC byte to detect errors without correction, and a stop bit to locate the end of a record, values of the registers are compared dependent upon whether there is data being filled or drained to properly manage the temporary storage of data within the memory.

REFERENCES:
patent: 4138732 (1979-02-01), Suzuki et al.
patent: 4433387 (1984-02-01), Dyer et al.

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