Apparatus for and method of preventing changes of computer confi

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395427, 395429, 395430, 364243, 3642437, 3642449, 3642468, 3642469, 364DIG1, G06F 1200

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055354092

ABSTRACT:
A protection system for a computer is provided. This system is essentially based on the provision of an EEPROM (20) of unstandard access and containing configuration data of the computer as well as a password. As power-on, the contents of the EEPROM except eventually the password, are copied into a CMOS memory (16) which must conventionally be present in the computer. The invention eventually provides additional circuitry for irreversibly cutting the access to the EEPROM and specified peripheric devices.

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IBM Technical Disclosure Bulletin, vol. 30, No. 5, Oct. 1987, New York, U.S., pp. 57-58 Security System For Personal Computers.
Bergman, "A Password-Protected Power Controller", IEEE 1988, pp. 252-257.

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