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AMM-1570/1572 User’s Guide
Stock Number: 510526-00, Rev. B Page: Glossary-6
Print Spec Number: 492379-00
Current Date: 3/7/94 ECN Date: 3/8/94
AMM-1570/1572 User’s Guide
Glossary-6
Initiator
A SCSI device that requests an
operation to be performed by
another SCSI device (the target).
The initiator provides all the
command information and
parameters required to perform
the operation, but the details of
the operation are actually
sequenced by the target. The
host adapter is sometimes
called the initiator.
I/O Operating Environment Software
Additional software that may
be required in certain operating
system environments in order
to use some kinds of SCSI
devices with the AMM-1570/
1572. For example, additional
software is needed in order to
install CD-ROM drives on the
SCSI bus in the DOS/Windows
environment.
ISA
Industry Standard Architecture
expansion bus. A type of com-
puter bus used in most PCs. ISA
enables expansion devices like
network cards, video adapters,
and modems to send data to and
receive data from the PC's CPU
and memory 16 bits at a time.
Expansion devices are plugged
into sockets in the PC's mother-
board. ISA is sometimes called
the AT bus, because it was origi-
nally introduced with the IBM
PC-AT in 1983.
KByte
Kilobyte. A measure of com-
puter storage. One KByte equals
1024 bytes. (A byte is the
amount of storage needed to
hold one character.)
Line-in
A port on audio hardware to
which a recording source, such
as CD player output or cassette
deck output, can be attached.
Line-out
A port on audio hardware to
which audio components can be
attached. Typically, you connect
the line-out signal to an
amplifier.
Logical Unit
A physical or virtual device
addressed through a target. Each
target can have up to eight Logi-
cal Units.
Logical Unit Number
An encoded 3-bit identifier for a
logical unit.
LU
See Logical Unit
LUN
See Logical Unit Number
Manager
See ASPI Manager
MByte
Megabyte. A measure of com-
puter storage. One MByte equals
1,048,576 bytes. (A byte is the
amount of storage needed to
hold one character.)
Micro Channel
A 32-bit computer bus standard
introduced by IBM with the PS/2
series of PCs. Micro Channel is