System for the automatic substitution of control firmware embedded in a removable disk drive
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United States of America Patent
Stats
-
Feb 10, 1998
Grant Date -
N/A
app pub date -
Jul 28, 1995
filing date -
Jul 28, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A host computer is connected with a computer interface to a disk drive that accepts removable disk drive cartridges. A FLASH memory provides the non-volatile storage of a default embedded control program and an alternative control program for a processor. A special maintenance track on the removable cartridge is accessible by the processor and an alternative program can be uploaded from it and stored in the FLASH memory if a user interlock and the function and revision codes included in the system permit the upload. A fail-safe switch to the embedded default control program is made when problems are experienced with any uploaded program.
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