A computer system that can rewrite a boot process program during operation, comprising at least two planes of non-volatile memory devices that are rewritable by software, a non-volatile memory device selector for switching at least the two planes of non-volatile memory devices, a multitasking operation...http://www.google.com.tw/patents/US6223336?utm_source=gb-gplus-share專利 US6223336 - Multitasking computer system having a boot process rewrite program
