Automatic recovery method of BIOS memory circuit in memory apparatus containing dual BIOS memory circuits - prevents boosting failure of computer system

摘要

An automatic recovery method of defective BIOS memory circuit in a computer system having memory apparatus containing dual BIOS memory circuits is disclosed in the present invention. A computer system contains a memory apparatus that includes a main BIOS memory circuit and a recovery BIOS memory circuit, which respectively store the first BIOS program and the second BIOS program for starting the operation of computer system. In addition, the main BIOS memory circuit or the safe recovery BIOS memory circuit even contains a BIOS flash utility such that, when the computer system is boosted, the chip enable circuit in the computer system first enables the recovery BIOS memory circuit and uses an error detection circuit to check and find if there is any error contained in the first BIOS program stored in the main BIOS memory circuit. If the first BIOS program stored in the main BIOS memory circuit contains error, the content of safe recovery BIOS memory circuit is used to program the main BIOS memory circuit via the BIOS flash utility. Then, the chip enable circuit disable the safe recovery BIOS memory circuit and enable the main BIOS memory circuit so as to continue the boosting procedure of computer system from main BIOS memory circuit.