Patent ID: 6014714
Filing Date: 2000-01-11
Classification: G06F

Abstract:
An adapter card for a computing system comprising:a non volatile memory for storing configuration parameters for the adapter card as well as data identifying the configuration;a plurality of registers for receiving and storing said configuration parameters;a system bus interface connecting the adapter card to the computing system bus for receiving configuration commands issued by a central processor connected to said system bus; andlogic circuitry for configuring said adapter card to one of a plurality of configurations depending on the data identifying the configuration in the non-volatile memory said logic circuitry in response to one state of said identifying data which defines a default state, establishes a legacy configuration for said adapter card, said logic circuitry switching said adapter to a plug and play protocol when a plug and play key sequence appears on said system bus, said logic circuitry in response to a second state of said data identifying said configuration ignoring any plug and play key sequence which appears on said system bus, maintaining said adapter card in a legacy configuration.