LSI 21003 - Manual (Page 57)

3.75 pc 10.25 pc 11.25 pc 38.25 pc
4.333 pc
48.583 pc
52.5 pc
34.5 pc
44.25 pc
Glossary of Terms and Abbreviations A-3
Dword A doubleword 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.