Patent ID: 6282584
Filing Date: 2001-08-28
Classification: G06F

Abstract:
In a system having a host processor and first device controller and a second device controller, said first device controller and said second device controller operable as a partner controller to each other, a method for writing signature data to said first and second controllers, said method comprising:receiving signature data by one of said first and second controllers from said host processor;determining by said receiving controller if said received signature data has been sent as its own signature data or for a different controller that has failed;if said received signature data has not been sent for said different controller that has failed, then:updating the signature data stored in a memory of the receiving first controller as its own signature data with said received signature data;copying said received signature data to a signature passing buffer in said receiving first controller;communicating said received signature data from said signature passing buffer in said receiving first controller to a signature passing buffer in said second controller; andreceiving said communicated signature data by said second controller and copying said communicated signature data from said second controller signature passing buffer to a partner signature memory storage register.