05548791 is referenced by 79 patents and cites 20 patents.

A data processing system includes a host processor and host memory means. The processor interacts with a plurality of peripheral units through an I/O system that includes a plurality of channels, one or more I/O processors (IOP's), and control data in a system area of the host memory means. Each channel has an associated busy bit in a vector, and is provided with a one position queue for dispatching work to the channel. Each queue has a bit in a vector indicating its full or empty status. A very efficient algorithm for the assignment of work for peripherals by the IOP's is provided in a system that provides for multiple paths through multiple channels between the host and a particular peripheral using the busy vector and queue vector.

Title
Input/output control system with plural channel paths to I/O devices
Application Number
8/279581
Publication Number
5548791
Application Date
July 25, 1994
Publication Date
August 20, 1996
Inventor
Sandra K Ryan
Rochester
MN, US
Marten J Halma
Poughquag
NY, US
Steven G Glassen
Wallkill
NY, US
Daniel F Casper
Poughkeepsie
NY, US
Agent
Lynn L Augspurger
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 13/14
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