A method and system for tracking intra-chip events within a data processing system.
In accordance with the method of the present invention, an event that corresponds
to a state associated with one or more internal chip signals is detected by embedded
detection logic. In response to an asserted diagnostic enable flag, the event is
recorded within a designated diagnostic transaction queue within an interface device
that drives an off-chip system interconnect. The event is encoded within a diagnostic
packet that is issued onto the off-chip system interconnect from the interface device.
