LSI 20160 User Manual

Page 51

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Copyright © 2001 by LSI Logic Corporation. All rights reserved.

Dword

A double word is a group of four consecutive bytes or characters that are
stored, addressed, transmitted, and operated on as a unit. The lower two
address bits of the least significant byte must equal zero in order to be
Dword aligned.

EEPROM

Electronically Erasable Programmable Read Only Memory. A memory
chip typically used to store configuration information. See NVRAM.

EISA

Extended Industry Standard Architecture. An extension of the 16-bit ISA
bus standard. It allows devices to perform 32-bit data transfers.

External SCSI
Device

A SCSI device installed outside the computer cabinet. These devices are
connected in a continuous chain using specific types of shielded cables.

Fast-20

The SCSI Trade Association (STA) supports the use of “Ultra SCSI” over
the term “Fast-20”. Please see Ultra SCSI.

Fast-40

The SCSI Trade Association (STA) supports the use of “Ultra2 SCSI”
over the term “Fast-40”. Please see Ultra2 SCSI.

Fast SCSI

A standard for SCSI data transfers. It allows a transfer rate of up to
10 Mbytes/s over an 8-bit SCSI bus and up to 20 Mbytes/s over a 16-bit
SCSI bus.

FCC

Federal Communications Commission.

File

A named collection of information stored on a disk.

Firmware

Software that is permanently stored in ROM. Therefore, it can be
accessed during boot time.

Hard Disk

A disk made of metal and permanently sealed into a drive cartridge. A
hard disk can store very large amounts of information.

Host

The computer system in which a SCSI host adapter is installed. It uses
the SCSI host adapter to transfer information to and from devices
attached to the SCSI bus.

Host Adapter

A circuit board or integrated circuit that provides a SCSI bus connection
to the computer system.

Internal SCSI
Device

A SCSI device installed inside the computer cabinet. These devices are
connected in a continuous chain using an unshielded ribbon cable.

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