Patent ID: 6135651
Filing Date: 2000-10-24
Classification: G06F

Abstract:
A method for replacing particular instructions in computer program code being executed in a predetermined peripheral communication device for a computer, said instructions being identified by corresponding computer program code addresses, said method comprising:storing selected addresses identifying instructions of computer code for execution by said peripheral communication device subject to replacement by at least a single replacement code instruction;providing said addresses identifying instructions of computer code for execution by said peripheral communication device subject to replacement to a first buffer and using said first buffer to selectively apply a memory disable signal if computer code for execution by said peripheral communication device is to be replaced by patch instructions;comparing at least a single program code address and said selected addresses; andgenerating a code change enable signal when any of said addresses matches one of said selected address locations and selectively transmitting said enable signal through a second buffer when program code for execution by said peripheral communication device to be replaced by patch instructions is encountered during said comparing of the program code address and selected addresses.