Patent
1994-11-29
1997-09-23
Harvey, Jack B.
395821, 395830, 395836, 39520012, 3952002, 395700, 395800, 395839, 395858, H01J 300
Patent
active
056714416
ABSTRACT:
Automatic machine methods and apparatus for determining which components of an I/O configuration are shared by other components of the configuration. The information can be obtained through the use of existing self-description facilities and unique identifiers. By noting which channel paths are used to obtain configuration-data records and examining the unique identifiers provided for each I/O items it can be determined which I/O devices are accessible through the same control unit, and which control units provide access to the same I/O device. Furthermore, by examining the unique identifiers provided, it can be determined which I/O subsystems and which control units or channel subsystems are accessible through the same dynamic switch and which dynamic switches provide access to the same I/O subsystem of channel subsystem. A programmable subchannel is provided to enable communication between a CEC and an electrically-connected I/O item not represented in the current I/O configuration description being used by the CEC. Without the programmed subchannel, the CEC cannot access any I/O item not represented in the CEC's current I/O configuration description.
REFERENCES:
patent: 4207609 (1980-06-01), Luiz et al.
patent: 4604685 (1986-08-01), Brown et al.
patent: 4697232 (1987-09-01), Brunelle et al.
patent: 4812968 (1989-03-01), Poole
patent: 4970640 (1990-11-01), Beardsley et al.
patent: 5119488 (1992-06-01), Takamatsu et al.
patent: 5197069 (1993-03-01), Cook et al.
patent: 5297262 (1994-03-01), Cox et al.
patent: 5301323 (1994-04-01), Maeurer et al.
patent: 5325492 (1994-06-01), Bonevento et al.
patent: 5414851 (1995-05-01), Brice, Jr. et al.
patent: 5420988 (1995-05-01), Elliott
patent: 5444851 (1995-08-01), Woest
patent: 5465355 (1995-11-01), Cook et al.
patent: 5517670 (1996-05-01), Allen et al.
IBM Technical Disclosure Bulletin, vol. 18, No. 7, Dec. 1975 entitled "Optimization of Computer Configurations" by J. M. Angiulli et al, pp. 2235-2238.
Glassen Steven Gardner
Halma Marten Jan
Hefferon Eugene Paul
Johnson Francis Edward
Goldman Bernard M.
Harvey Jack B.
International Business Machines - Corporation
Phan Raymond N.
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