Digital Equipment DEC 3000 500X AXP Owner's Manual page 248

error correction code (ECC)
Code that carries out automatic error correction by performing
an exclusive OR operation on the transferred data and applying
a correction mask.
error message number
A number that appears on the error line representing a
particular system or component problem.
Ethernet
A local area network (LAN) or wide area network (WAN) that
connects (by coaxial cable) multiple computers that are running
a variety of network operating systems. Ethernet transmits
10 megabits per second and does not require switching logic or
control by a central computer.
Ethernet controller
An interface unit that connects a system to the Ethernet.
Ethernet hardware address
The unique Ethernet physical address associated with a
particular Ethernet communications controller.
Ethernet ports
The connectors on the system unit through which the Ethernet
is connected to the system.
Ethernet subsystem
The Ethernet controller chip built into the system module.
expansion box
An attachable system option that holds one TURBOchannel
option module, two hard disk drives, and one removable-media
drive.
Factory-Installed Software (FIS)
Operating system software that is loaded into an internal fixed
disk and installed in the system unit during manufacture. On
site, the FIS is bootstrapped through the system disk, prompting
a predefined menu of questions on the final configuration.
Glossary–11