Industry Standard Architecture
Sign in to saveAlso known as ISA, PC/AT-bus, ISA bus, PC bus, AT bus
16-bit internal bus of the IBM PC/AT
In the Vinony graph
Vinony's link graph records 575 inbound references to Industry Standard Architecture, and connects out to Parallel ATA, IBM Personal Computer XT and Peripheral Component Interconnect.
Vinony files it under Computer buses, Computer hardware standards and Computer-related introductions in 1981.
Vinony links it to 36 Wikipedia language editions.
Key facts
- Year created
- 1981 ; 45 years ago ( 1981 )
- Created by
- IBM
- Superseded by
- PCI , LPC (1993, 1998)
- Width in bits
- 8 or 16
- Number span no of devices
- up to 6 devices
- Speed
- Half-duplex 8 MB/s or 16 MB/s
- Style
- Parallel
- Hotplugging interface
- No
- External interface
- No
via Wikipedia infobox
Wikidata facts
- Developer
- IBM
- Image
- Isa1.jpg
Show 3 more facts
- Commons category
- ISA
- inception
- 1981-00-00
- replaced by
- Accelerated Graphics Port
Sources (2)
via Wikidata · CC0
~20 min read
Encyclopedic overview
Industry Standard Architecture (ISA) is the 16-bit internal bus of IBM PC/AT and similar computers based on the Intel 80286 and its immediate successors during the 1980s. The bus was (largely) backward compatible with the 8-bit bus of the 8088-based IBM PC, including the IBM PC/XT as well as IBM PC compatibles.
Originally referred to as the PC bus (8-bit) or AT bus (16-bit), it was also termed I/O Channel by IBM. The ISA term was coined as a retronym by IBM PC clone manufacturers in the late 1980s or early 1990s as a reaction to IBM attempts to replace the AT bus with its new and incompatible Micro Channel architecture.
Excerpted from Wikipedia’s “Industry Standard Architecture” article, available under the CC BY-SA 4.0 licence.