System with virtual update capable read-only memory

摘要

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).