User`s guide

IPR
Internal Processor Registers implemented by the processor chip set. These
longword registers are only accessible with the instructions MTPR (Move
To Processor Register) and MFPR (Move From Processor Register) and
require kernel mode privileges. This document uses the prefix "PR$_" when
referencing these registers.
ISE
Integrated storage element. An intelligent disk drive used on the Digital
Storage Systems Interconnect.
IT
Interval timer.
LED
Light emitting diode.
Machine check
An operating system action triggered by certain system errors that can be fatal
to system operation. Once triggered, machine check handler software analyzes
the error, comparing it to predetermined failure scenarios. Three outcomes are
possible: the system continues to run, the software program is halted, or the
system crashes.
µs
Microsecond (10e-6 seconds)
MMJ
Modified modular jack.
MOP
Maintenance Operations Protocol specifies message protocol for network
loopback assistance, network bootstrap, and remote console functions.
ms
Millisecond (10e-3 seconds)
MSCP
Mass Storage Control Protocol is used in Digital disks and tapes.
Glossary–4