Data processing system having a storage controller for transferr

Details Data processing system having a storage controller for transferr Data processing system having a storage controller for transferr

1989-09-20

1992-07-28

Chan, Eddie P.

Boots, shoes, and leggings

3642432, 3642463, 3642467, 3642543, 3642601, 364DIG1, G06F 1300

Patent

active

051346982

ABSTRACT:
A data processing system which encludes an instruction processor, a storage controller, a main storage, and an extended storage. The storage controller contains a data transfer unit for transferring data between the main storage and the extended storage by an instruction from the instruction process specifying an amount of the data to be transferred. The data transfer unit is provided in the storage controller and with a data buffer and an address addition-subtraction circuit for operating a source address and a destination address. The data is transferred between the main storage and the extended storage by sending to a firmware of a storage control a main storage real address translated from a main storage virtual address specified by the instruction, the number of data to be transferred from the main storage, an extended storage real address, and the number of bytes to be transferred from the extended storage, in a manner so as to match with a unit of data to be processed on the extended storage.

REFERENCES:
patent: 3936804 (1976-02-01), Bachman
patent: 4296465 (1981-10-01), Lemak
patent: 4344130 (1982-08-01), Fung et al.
patent: 4713748 (1987-12-01), Magar et al.
patent: 4821172 (1989-04-01), Kaneko et al.
patent: 4860245 (1989-08-01), Kinoshita
patent: 4891754 (1990-01-01), Boreland

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