Avago Technologies LSI20160 User Manual
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A-2
Glossary of Terms and Abbreviations
Copyright © 1993–2001 by LSI Logic Corporation. All rights reserved.
BIOS
Basic Input/Output System. Software that provides basic read/write
capability. Usually kept as firmware (ROM based). The system BIOS on
the mainboard of a computer is used to boot and control the system. The
SCSI BIOS on your host adapter acts as an extension of the system
BIOS.
Bit
A binary digit. The smallest unit of information a computer uses. The
value of a bit (0 or 1) represents a two-way choice, such as on or off, true
or false, and so on.
Boot Disk
A hard disk or diskette that contains an operating system which can be
booted to set the computer into operation.
Bundled
Drivers are distributed with the operating system by the OS vendor.
Bus
A collection of unbroken signal lines across which information is
transmitted from one part of a computer system to another. Connections
to the bus are made using taps on the lines.
Bus Mastering
A high-performance way to transfer data. The host adapter controls the
transfer of data directly to and from system memory without bothering the
computer’s microprocessor. This is the fastest way for multitasking
operating systems to transfer data.
Byte
A unit of information consisting of eight bits.
C
CD-ROM
Compact Disk-Read Only Memory. An optical storage technology that
uses compact disks to store up to 650 Mbytes of data per disk.
Compile
To translate source code written in a high-level language into object code.
Configuration
Refers to the way a computer is set up; the combined hardware
components (computer, monitor, keyboard, and peripheral devices) that
make up a computer system; or the software settings that allow the
hardware components to communicate with each other.
CPU
Central Processing Unit. The “brain” of the computer that performs the
actual computations. The term “microprocessor” is also used.
CRC
Cyclic Redundancy Check is an error detection code used in Ultra160
SCSI. Four bytes are transferred with the data to increase the reliability
of data transfers. CRC is used on the Double Transition (DT) Data-In and
DT Data-Out phases.