Excavating
Patent
1986-06-05
1988-02-23
Atkinson, Charles E.
Excavating
371 25, 364410, G06F 1100, G01R 3128
Patent
active
047275448
ABSTRACT:
A system for continuously checking the integrity of the memories of a computer controlled gaming device. The gaming device includes a plurality of EPROMs for storing software and fixed data according to which the gaming device operates. A checksum algorithm stored in one of the EPROMs is periodically implemented throughout the operation of the gaming device to calculate individual checksums for each EPROM. The checksum calculated for an EPROM is compared to a checksum value stored for that EPROM to determine whether changes in the contents of the memory have been made.
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patent: 4646307 (1987-02-01), Nishimura
Brunner Norman
Hilgendorf Douglas
Pajak Phillip
Atkinson Charles E.
Bally Manufacturing Corporation
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