參數(shù)資料
型號(hào): SYM22902
英文描述: SYM22902 PCI to Ultra2 SCSI Dual Channel low profile PCI host adapter user's guide v1.0
中文描述: SYM22902 PCI到Ultra2的SCSI雙通道高PCI主機(jī)適配器用戶指南1.0版
文件頁(yè)數(shù): 71/88頁(yè)
文件大小: 1211K
代理商: SYM22902
Symbios SYM22902 PCI to Ultra2 SCSI Dual Channel Low Profile PCI Host Adapter
B-1
Appendix B
Glossary of Terms and
Abbreviations
Active
Termination
The electrical connection required at each end of the SCSI bus, which is
composed of active voltage regulation and a set of termination resistors.
Ultra and Ultra2 SCSI require active termination.
Address
A specific location memory, designated either numerically or by a
symbolic name.
Asynchronous
Data Transfer
A method of transmission which does not require a common clock, but
separates fields of data by stop and start bits. It is slower than
synchronous data transfer.
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.
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.
Chain
A topology in which every processor is connected to two others, except
for two end processors that are connected to only one other.
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