Adaptec AHA-2740 User Manual page 112

such a manner that each byte placed in the buffer is removed
from the buffer in the same order.
Firmware
The software that controls and manages the host adapter. It is
firm as opposed to soft because it is designed into the host
adapter and cannot be modified by the user.
G
GByte
Gigabyte. A measure of computer storage. One GByte equals
approximately one billion bytes. (A byte is the amount of storage
needed to hold one character.)
H
Host
A microcomputer system in which a host adapter is installed. The
host uses software to request the services of the host adapter in
transferring information to and from peripheral devices attached
to the SCSI host adapter.
Host Adapter
A printed circuit board or integrated circuit that installs in a
standard microcomputer system and provides a SCSI bus connec-
tion so that SCSI devices can be connected to the microcomputer.
I
IBM PC-AT Compatible
Any computer system that emulates exactly the IBM
and that uses an ISA backplane bus.
Industry Standard Architecture
See ISA
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.
Adaptec AHA-2740 Series User's Manual
Stock Number: 510381-00 / Rev. C
Print Spec Number: 491709-00 Rev C
Current Date: 9/1/93
®
(Page G-7)
ECN Date: 9/14/93
Glossary
®
PC-AT
Glossary-7