Glossary-2 SPARCclassic/SPARCclassic X/SPARCstation LX Service Manual • November 1993
Desktop Storage
Module An external data storage that contains a disk drive or a tape drive.
Desktop Storage Pack
(DSP) A generic name for an external unit containing a tape drive, a disk drive, or a
CD-ROM drive that can be connected to a Desktop SPARCstation. The external
unit containing the tape drive is referred to as the Desktop Backup Pack. The
external unit containing a disk drive is specifically referred to as the Desktop
Disk Pack. The external unit containing a compact disc drive is specifically
referred to as the Desktop SunCD Pack.
Desktop SunCD Pack An external unit containing a compact disc drive.
Diagnostic Executive See SunDiagnostic Executive.
disk A round platter, or set of platters, coated with magnetic medium and
organized into concentric tracks for storing data.
disk drive The mechanism that rotates a disk.
diskette A removable disk of magnetic medium for storing software and information.
The outer jacket of the diskette is made of firm plastic that measures 3.5 inches
(88.9 millimeters) across.
diskette drive A device that reads and writes diskettes. The diskette drive access is located on
the front panel of the system units. A diskette drive is optional on both
SPARCclassic and SPARCstation LX systems.
DRAM Dynamic Random Access Memory.
DSIMM DRAM Single In-line Memory Module. A small printed circuit card that
contains dynamic random access memory (DRAM) chips.
ESM External Storage Module. An external unit that contains disk and/or tape
drive(s) that can be connected to a Desktop SPARCstation.
Forth A high-level programming language. A major feature of Forth is that user-
defined operators can be used as if they are primitives.
Forth Toolkit An interactive command interpreter based on the Forth programming
language. While in the Toolkit, you will see the ok prompt. The Toolkit gives
you access to an extensive set of functions for performing fault isolation and
debugging.
frame buffer board A printed circuit board that can be installed in an SBus slot of the system unit
that controls a video display.
ID Identification.
I/O Input/Output. For example, an input/output device.
IU Integer Unit.
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