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Method and apparatus for ensuring proper functionality of a shared memory, multiprocessor system

DC
  • US 6,393,590 B1
  • Filed: 12/22/1998
  • Issued: 05/21/2002
  • Est. Priority Date: 12/22/1998
  • Status: Expired due to Term
First Claim
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1. A processing element for use in a multiprocessor computing system, said processing element including:

  • a processor block;

    an input port for receiving instruction elements for execution by said processor block;

    a watchdog timer in operative relationship with said processor block, said watchdog timer capable to cause said processor block to reset after a first predetermined time interval has elapsed from setting the watchdog timer in a first initial condition;

    a sanity timer in operative relationship with said processor block, said sanity timer capable to cause said processor block to reset after a second predetermined time interval has elapsed from setting the sanity timer in a second initial condition;

    said processor block being responsive to the presence of at least one predetermined executable instruction element to cause said watchdog timer to acquire the first initial condition;

    said processing element being responsive to an external signal to cause said sanity timer to acquire the second initial condition.

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