Component identification in computer system.

摘要

In a computer system having a plurality of subsystem boards 6,8,12 each such subsystem board includes a hard wired, digitally coded portion 28,38,48 to identify the particular subsystem board type. Also on each subsystem board is an annotation segment 30,40,50 wherein a changeable code structure is provided. The coding of the annotation segments is accomplished by means of solder connection jumpers to provide a predetermined code structure indicating an order of revision. A controlling compter (not shown) can interrogate each board, addressing the board code section and/or the revision status code section by means of addressing means on the boards, to read out these codes over a system bus 16 and thereby check the nature and status of the boards against e.g. a system software list.