Industry Standard Architecture

E184289

Industry Standard Architecture is an older 16-bit computer bus standard used primarily in IBM PC-compatible systems to connect expansion cards and peripherals to the motherboard.

All labels observed (1)

Label Occurrences
Industry Standard Architecture canonical 3

How this entity was disambiguated

Statements (46)

Predicate Object
instanceOf computer bus standard
expansion bus
abbreviation ISA
addressBusWidth 24 bits
alsoKnownAs AT bus
backwardCompatibleWith 8-bit IBM PC bus
bitWidth 16-bit
busArbitration centralized
clockSpeed 8 MHz
commonIn DOS-era personal computers
compatibility IBM PC AT
surface form: IBM PC/AT

IBM PC XT
surface form: IBM PC/XT
configurationMethod jumpers and DIP switches
dataBusWidth 16 bits
designedFor Intel 80286-based systems
eraOfUse 1980s
early 1990s
formFactor long expansion slot parallel to motherboard
influenced design of later PC expansion buses
introducedBy IBM
introducedInProduct IBM PC AT
surface form: IBM PC/AT
introducedYear 1984
limitations lack of automatic configuration
limited DMA channels
low bandwidth compared to later buses
maxThroughput approximately 8 MB/s theoretical
predecessor IBM PC
surface form: IBM PC bus
primaryUseToday legacy and industrial systems
purpose connect expansion cards to motherboard
connect peripherals to motherboard
slotType edge connector
standardizedBy industry consortium of PC manufacturers
status obsolete
succeededBy EISA
surface form: Extended Industry Standard Architecture

Peripheral Component Interconnect
VESA Local Bus
supportsBusMastering false
supportsPlugAndPlay false
transferMode synchronous
typicalVoltage +5V
usedFor SCSI controllers
modems
network interface cards
sound cards
video capture cards
usedIn IBM PC-compatible systems

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

ISA fullName Industry Standard Architecture
ISA abbreviationOf Industry Standard Architecture
VESA Local Bus predecessor Industry Standard Architecture