System with virtual update capable read-only memory

Details System with virtual update capable read-only memory System with virtual update capable read-only memory

1994-10-17

1997-07-01

Harvey, Jack B.

395427, 395821, G06F 1300

Patent

active

056447825

ABSTRACT:
A system having a virtual update capable read-only memory, includes a data storage system (270), and a device driver (272) which interfaces with the data storage system (270). The data storage system (270) includes a read-only memory device (274) which stores primary data, and an auxiliary memory device (276) which stores supplementary data reflecting updates to the primary data. The device driver (272) has a read handler which provides a response to a read request consisting of a combination of primary data from the read-only memory device (274) and supplementary data from the auxiliary memory device (276).

REFERENCES:
patent: 5119353 (1992-06-01), Asakura
patent: 5247575 (1993-09-01), Sprague et al.
patent: 5537636 (1996-07-01), Uchida et al.
patent: 5541840 (1996-07-01), Gurne et al.
patent: 5548783 (1996-08-01), Jones et al.

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