A method and computer system synchronize timing registers located throughout
the
computer system so that trace data from various sources in the system can be coordinated
in time. This invention solves the problem when the multiple time stamp registers
are loosely synchronized by relatively slow common timing pulses, but the phase
relationship of the multiple time stamps to the common timing pulses is unknown
to the firmware. By adding hardware to measure this phase relationship, the firmware
can access this phase information to coordinate the time stamp information.
