Avago Technologies LSI20160 User Manual
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3.75 pc
10.25 pc
11.25 pc
38.25 pc
4.333 pc
48.583 p
52.5 pc
34.5 pc
44.25 pc
A-6
Glossary of Terms and Abbreviations
Copyright © 1993–2001 by LSI Logic Corporation. All rights reserved.
NVS
Nonvolatile Storage. System memory allocated for configuration
information storage as specified in the DMI specification.
O
Object code
Software instructions that are compiled as an intermediate step between
source code and binary code.
Operating
System
A program that organizes the internal activities of the computer and its
peripheral devices. An operating system performs basic tasks such as
moving data to and from devices, and managing information in memory. It
also provides the user interface.
P
Parity Checking
A way to verify the accuracy of data transmitted over the SCSI bus. One
bit in the transfer is used to make the sum of all the 1 bits either odd or
even (for odd or even parity). If the sum is not correct, an error message
appears.
Partition
A logical portion of space on a hard disk designated by a drive letter.
Passive
Termination
The electrical connection required at each end of the SCSI bus,
composed of a set of resistors. It improves the integrity of bus signals.
PCI
Peripheral Component Interconnect. A local bus specification that allows
connection of peripherals directly to computer memory. It bypasses the
slower ISA and EISA buses.
Peripheral
Device
A piece of hardware (such as a video monitor, disk drive, printer, or
CD-ROM) used with a computer and under the computer’s control. SCSI
peripherals are controlled through a SCSI host adapter.
PIO
Programmed Input/Output. A way the CPU can transfer data to and from
memory using the computer’s I/O ports. PIO is faster than DMA, but
requires CPU time.
Port Address
Also Port Number. The address through which commands are sent to a
host adapter. This address is assigned by the PCI bus.
Port Number
See Port Address.