Digital Equipment 300 Series AXP Reference Manual page 284

FEPROM (flash-erasable programmable read-only memory)
A memory device from which data can be erased in large
amounts at a time. If the FEROM code does not correspond
to the CPU code, you receive an error message and you must
update the flash ROM.
Fiber Distributed Data Interface
An ANSI-standard high-speed network technology that uses
fiber optics as the transmission medium. FDDI employs a ring
topology and operates up to 100 km in total network length. It
uses 1300 nm wavelengths, which optimize fiber bandwidth.
field replaceable unit (FRU) number
A Digital number allocated to any component or module that can
be replaced by you or your Digital service representative.
file
A collection of related information treated by the system as a
unit.
filler panel
A blank panel that covers the slot for the removable-media drive
when the removable-media drive is not installed in the system.
The RX26 removable-media drive has its own front panel, which
permits the user to access the front of the drive.
firmware
Software code that is stored in a fixed way (wired in), usually in
read-only memory. The firmware executes when the system is
turned on, during operating system boot and restarts, and as a
result of operator intervention or a fatal system error.
Firmware Update Utility
The firmware code provides a number of basic functions on your
system, including the console program and diagnostic testing.
The Firmware Update Utility lets you update your system with
new software code whenever it is available from Digital.
FIS
See Factory Installed Software.
Glossary–12