Diagnostic Technique for a Mainframe System Made Up of Multiple Microprocessor-Driven Hardware Adapters
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-05
In order to detect and isolate a failing component or group of components within any given hardware adapter of a mainframe system, a technique is used in which one hardware adapter assumes diagnostic monitor responsibility and the other hardware adapters present assume diagnostic sections responsibility. The adapters communicate with each other as they normally do in mainframe operations. This interface is simply expanded to facilitate diagnostic commands and responses. To detect and isolate faults in the entire system requires that each of the system adapters be broken into logical areas. Then, the diagnostic monitor issues commands to the adapters (and their components) and waits for responses in a sequential building block approach.