DEC acronyms

Acronyms from Digital Equipment Corporation. (Listings given in italics are not just DEC acronyms.)

Acronym	Meaning
BR	Bus Request (UNIBUS)
CBOX	Cache Box
CFS	Common File System (PDP-10/TOPS-20)
CI	Computer Interconnect
CMI	CPU/Memory Interconnect
CRD	Customer Runnable Diagnostic
CSC	Customer Support Center
CSS	Computer Special Systems
DBN	Diagnostic Block Number
DCL	Digital Command Language
DCS	Digital Classified Software
DDC	Digital Diagnostic Center
DSA	Digital Storage Architecture
DSC	Disk Save and Compress
DSDF	DSA Standard Disk Format
DSR	Digital Standard Runoff
DSSI	Digital Storage Systems Interconnect
DUP	Diagnostic and Utility Protocol
EBOX	Execution Box
ECO	Engineering Change Order
FRU	Field Replacable Unit
IBOX	Instruction Box
GPX	Graphics Processing Extension
GIDIS	General Image Display Instruction Set
JBOX	Junction Box
LAD	Local Area Disk
LAST	Local Area System Transport
LAT	Local Area Transport
LAVC	Local Area VAXcluster
LBN	Logical Block Number
MDM	MicroVAX Diagnostic Monitor
MBOX	Memory Box
MCR	Monitor Console Routine
MDS	Maintenance Documentation Service
MSCP	Mass Storage Control Protocol
ODS-2	On-disk Structure 2
OTS	Object Time System
PPD	Port/Port Driver Layer
PPL	Periodic Payment License
RBN	Replacement Block Number
RCT	Replacement/Revectoring Control Table
RDC	Digital Remote Diagnosis Center
RMS	Record Managment Services
SBB	System Building Block
SBI	Synchronous Backplane Interconnect
SCA	Systems Communication Architecture
SCS	Systems Communication Services
SDA	System Dump Analyzer
SDB	Standard Drive Bus
SDI	Standard Disk Interconnect
SDL	Structure Definition Language
STI	Standard Tape Interconnect
UETP	User Environment Test Package
UPI	Unique Product Identifier
UQSSP	UNIBUS QBUS Storage Systems Port
UWS	ULTRIX Worksystem Software
VAXBI	VAX Bus Interconnect
VBOX	Vector Box
VDS / VAX/DS	VAX Diagnostic Supervisor
VUP	VAX Unit of Performance
VWS	VAX Workstation Software
WCS	Writable Control Store
XBN	External Block Number
XMI	Extended Memory Interconnect