Boots – shoes – and leggings
Patent
1984-02-16
1986-06-03
Zache, Raulfe B.
Boots, shoes, and leggings
G06F 1208
Patent
active
045933545
ABSTRACT:
In response to a command including file extent information defining a file area received from a host processor, a disk cache processor stores the file extent information in an extent table and reserves a corresponding area in a disk cache buffer. In response to a WRITE command, the processor stores the data in the corresponding reserved area of the disk cache buffer and sets a write flag of the corresponding entry of a cache directory. When the processor is idling, it writes to a disk unit the data in the disk cache buffer which has not yet been written to the disk unit, and resets the corresponding write flag. In response to a command received from the host processor which has file extent information and designates a logical termination of a program, the processor writes all of the not-yet-written data which corresponds to the file area indicated by the extent information. When an error is caused during data write to the disk unit, the processor stores corresponding error status information into an error log table such that it corresponds to the extent information in the extent table. After data write into the designated area is terminated, the processor fetches the error status information for this file area alone and transfers the fetched information to the host processor.
REFERENCES:
patent: 4399503 (1983-08-01), Hawley
Toombs, Dean, "CCD and Bubble Memories: System Implications",IEEE Spectrum", vol. 15, No. 5, May 1978, pp. 36-39.
Tokyo Shibaura Denki Kabushiki Kaisha
Zache Raulfe B.
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