Peripheral unit adapted to monitor a low data rate serial input/output interface.

摘要

This disclosure relates to a peripheral unit for an information processing network which unit includes a peripheral interface and a peripheral control processor to control communication between one or more peripheral devices and a master controller by way of a systems bus interface. The peripheral interface and processor not only provide communication from the respective devices, whatever their function, but also can operate in a monitoring mode so that the peripheral unit can serve as a monitor of the system interface for the purposes of diagnostics and the like.