Data mover hardware controlled processing in a commanding system

Details Data mover hardware controlled processing in a commanding system Data mover hardware controlled processing in a commanding system

1997-05-28

1999-08-31

Barry, Lance Leonard

Electrical computers and digital processing systems: multicomput

Computer-to-computer protocol implementing

Computer-to-computer handshaking

G06F 1300

Patent

active

059447974

ABSTRACT:
The present invention significantly reduces or eliminates the involvment of central processors in the message block handling of received communication-link responses within a Central Processing Complex (CPC). When a commanding system sends a command, it must receive a response frame from the commanded system indicating if the command was correctly received or not. A significant amount of time is required for the commanding system processor to move the received response frame from a receiving link buffer to an area in the CPC memory. The preferred embodiment avoids the need for having a commanding system processor either wait for or be interrupted to handle the response frame. The preferred embodiment provides advanced preparation of a data mover in a manner to enable the data mover in the computer system to handle the reception of each response frame without involving the commanding system processor. The commanding system is signalled by the data mover on the completion of the response handling to make the completion of each command known to the program which issued the command.

REFERENCES:
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patent: 5247520 (1993-09-01), Geise et al.
patent: 5410655 (1995-04-01), Greenfield et al.
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patent: 5559963 (1996-09-01), Gregg et al.
patent: 5561809 (1996-10-01), Elko et al.

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