Data transfer apparatus with improved throughput due to reduced

Details Data transfer apparatus with improved throughput due to reduced Data transfer apparatus with improved throughput due to reduced

1997-12-03

2000-08-01

Ellis, Richard L.

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

710 6, 710 32, G06F 1312

Patent

active

060981210

ABSTRACT:
A data transfer apparatus is provided for transferring data with a DMA method between a plurality of disk apparatuses and a memory using a DMA command table. A processor generates the DMA command table composed of an array of the DMA commands which are each composed of an address (starting address) of the data area and a size of data to be transferred. A disk access unit transfers data between the disk apparatuses and the memory using the DMA command table. When it is judged that the disk apparatus currently transferring data has temporarily released the bus use right, the processor, concurrently in preparation for the resumption of the data transfer, updates the DMA command table by deleting DMA commands having been executed and adding new DMA commands. This eliminates or reduces the generation of the table update interrupt.

REFERENCES:
patent: 5204951 (1993-04-01), Keener et al.
patent: 5206943 (1993-04-01), Callison et al.
patent: 5448702 (1995-09-01), Garcia, Jr. et al.
patent: 5504868 (1996-04-01), Krakirian
patent: 5619728 (1997-04-01), Jones et al.
patent: 5634099 (1997-05-01), Andrews et al.
patent: 5668971 (1997-09-01), Neufeld
patent: 5696989 (1997-12-01), Miura et al.
patent: 5713044 (1998-01-01), Gillespie et al.
patent: 5740465 (1998-04-01), Matsunami et al.
patent: 5771397 (1998-06-01), Hospodor et al.
patent: 5860089 (1999-01-01), Ishii
patent: 5875299 (1999-02-01), Ooe et al.
patent: 5875349 (1999-02-01), Cornaby et al.

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