Method and apparatus for dynamically assigning programmable opti

Details Method and apparatus for dynamically assigning programmable opti Method and apparatus for dynamically assigning programmable opti

1994-07-15

1998-03-24

Phan, Raymond N.

395281, 395282, 395830, 395835, 395836, 395700, 395800, 395821, H01J 300

Patent

active

057322805

ABSTRACT:
A method and apparatus for dynamically selecting adapter card identifiers within a computer system having expansion slots. Name strings used by the computer system, such as in a system using Micro Channel expansion slots, identify the installed adapter card. The method and apparatus distinguish automatically between adapter cards upon installation. This is accomplished by, responsive to identifying a newly installed adapter card, transforming the default POS name string to an alternate identifier. Next, additional random values are added to the transformed alternate identifier to increase identifier uniqueness. Then, portions of the name string are matched to a field within the alternate identifier, before storing the identifier, for allowing the computer to identify the correct alternate identifier matching the newly installed adapter card. The new identifier is stored in both the expansion slot addressing region and on the adapter card. Unique alternate identifiers for each adapter card are generated by comparing the new alternate identifier with any preexisting alternate identifiers and then adding more random values until the new alternate identifier is unique compared to the preexisting alternate identifiers. An adapter card is deinstalled or deconfigured before removal by resetting the alternate identifier to the original default POS name string and then removing the stored alternate identifier.

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