Patent ID: 6282674
Filing Date: 2001-08-28
Classification: G06F

Abstract:
An apparatus for remote diagnostics and maintenance of a multiprocessor (MP) system comprising:an MP Central Electronics Complex (CEC), said CEC comprising a plurality of processors coupled on a first bus, each of said plurality of processors comprising an integrated circuit (IC);a serial scan test port in each of said ICs, said serial scan test port coupled to scan registers in said ICs, each of said serial scan test ports on each IC coupled with a scan test bus;a remote input/output (RIO) processor, said RIO processor coupled to said plurality of processors on said first bus, said RIO processor having said serial scan test port, said serial scan test port coupled to said ICs on said scan test bus, further said RIO processor coupled to a communication link via a modulator/demodulator (MODEM), said MODEM operable to communicate with a remote analysis station;a first routine for executing operations of said CEC using said first bus; anda second routine for executing operations using said scan test bus, said RIO processor concurrently executing said first and second routines.