Dynamically changing a system I/O configuration definition

Details Dynamically changing a system I/O configuration definition Dynamically changing a system I/O configuration definition

1991-03-28

1992-12-08

Richardson, Robert L.

G06F 1300

Patent

active

051704722

ABSTRACT:
A mechanism for changing the system I/O configuration definition in the channel subsystem of a data processing system without having to do a power on reset operation. The data processing system includes one or more central processing units, an I/O processor, a storage addressable by the central processors and the I/O processor, and a command mechanism for creating command-request blocks in the storage, each of which contains a requested command and data for the I/O Processor to add, delete or change elements of the I/O configuration definitions of the channel subsystem. Response-blocks are created in the storage for passing status information from the I/O processor to the central processing unit(s) indicating either successful execution of the requested command or that the I/O configuration definitions were unchanged by the command of the request-block, or when associated functions may have been performed in the execution of the command of the request-block by the I/O processor.

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North-Holland Microprocessing and microprogramming 18(1986) 455-462, Decuypere "Object Oriented System Supporting Dynamic Configuration".
IEEEE Transcriptions on Software Engineering, vol. SE-11, No. 4, Apr. 1985, Kramer et al "Dynamic Configuration for Distributed Systems".

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