Computer system having BIOS (basic input/output system)-ROM (Rea

Boots – shoes – and leggings

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364DIG1, 3642802, G06F 944

Patent

active

055220762

ABSTRACT:
A flash memory used as a BIOS-ROM has a main block storing a BIOS and a boot block storing minimum programs executed in initializing the system. Upon a power-on operation, when a rewriting unit is connected to an expansion bus connector, a new boot block stored in a ROM of the rewriting unit is written in the flash memory. Upon the power-on operation, a key depression detecting routine in the boot block is executed to check whether a predetermined key is depressed. If the predetermined key is determined to be depressed, a rewriting program in a floppy disk is loaded in the system and executed, thereby rewriting the content of the main block into the BIOS file stored in the floppy disk.

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patent: 5261104 (1993-11-01), Bertram et al.
patent: 5269022 (1993-12-01), Shinjo et al.
patent: 5327531 (1994-07-01), Bealkowski et al.
patent: 5388267 (1995-02-01), Chan et al.
Flash Memory Bios for PC and Notebook Computers, Jerry Jex, Intel Corporation, IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, May 9-10, 1991, pp. 692-695.

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