Automatic Domain Configuration Mechanism for a Multi-Device I/O Controller
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04
An automatic domain configuration mechanism is described for an I/O controller which connects multiple I/O devices to a host processor in a data processing system. This mechanism eliminates the need for all domain-related jumpers on the I/O controller card. Present multiple-device I/O controllers can handle different configurations of I/O devices. However, with each different configuration, jumpers on the controller card must be repositioned, removed or added to implement that particular application. This jumper manipulation occurs in the manufacturing plant for newly shipped systems and in the field under the control of a Customer Engineer for the case of equipment updates, modifications or replacements. In either case, burdensome card logics and personnel instructions must be created and maintained to support this effort.