A method that employs a ROM shadowing circuit to transfer ROM data to the RAM in order to implement the ROM shadowing process required during the initialization of a PC. When the ROM shadowing circuit detects a system reset signal, the ROM shadowing circuit holds the CPU in a reset state while the ROM...http://www.google.com.au/patents/US6401199?utm_source=gb-gplus-sharePatent US6401199 - Method and system for copying data from ROM to RAM upon initialization of a computer system
