×

Apparatus and method for initializing a master/checker fault detecting microprocessor

  • US 5,758,058 A
  • Filed: 02/27/1996
  • Issued: 05/26/1998
  • Est. Priority Date: 03/31/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for initializing a first device and a second device coupled in a master/checker fault detecting arrangement, the method comprising the steps of:

  • asserting a reset signal to the first device and the second device at the same time;

    designating both the first device and the second device as checkers;

    signaling identical initialization microcode routines in both the first device and the second device;

    the first device and the second device simultaneously and independently executing a first initialization microcode routine and a second initialization microcode routine respectively in response to the step of signaling, and further wherein each initialization microcode routine includes the steps ofinitializing internal state of its device to a known value, anddetermining whether the device is to be either a master or a checker,internally setting the device to be either a master or a checker based on determining whether the device is to be a master or checker,wherein the first microcode routine and the second microcode routine are completed at the same time, such that the first device and the second device complete initialization at the same time, thereby initializing the first device and the second device to operate in lock-step.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×