Industry Standard Architecture
16-bit internal bus of IBM PC/AT and similar computers based on the Intel 80286 and its immediate successors during the 1980s.- Industry Standard Architecture
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Local computer bus for attaching hardware devices in a computer and is part of the PCI Local Bus standard.
The PCI Local Bus was first implemented in IBM PC compatibles, where it displaced the combination of several slow Industry Standard Architecture (ISA) slots and one fast VESA Local Bus (VLB) slot as the bus configuration.
IBM PC compatible computers are similar to the original IBM PC, XT, and AT that are able to use the same software and expansion cards.
It was later re-named the Industry Standard Architecture (ISA) bus, after the Extended Industry Standard Architecture bus open standard for IBM PC compatibles was announced in September 1988 by a consortium of PC clone vendors, led by Compaq and called the Gang of Nine, as an alternative to IBM's proprietary Micro Channel architecture (MCA) introduced in its PS/2 series.
Standard interface designed for IBM PC-compatible computers.
The standard was originally conceived as the "AT Bus Attachment," officially called "AT Attachment" and abbreviated "ATA" because its primary feature was a direct connection to the 16-bit ISA bus introduced with the IBM PC/AT.
Released in 1984 as the fourth model in the IBM Personal Computer line, following the IBM PC/XT and its IBM Portable PC variant.
The AT bus became the de facto "ISA" (Industry Standard Architecture), while PC XT slots were retroactively named "8-bit ISA".
Proprietary 16- or 32-bit parallel computer bus introduced by IBM in 1987 which was used on PS/2 and other computers until the mid-1990s.
In IBM products, it superseded the ISA bus and was itself subsequently superseded by the PCI bus architecture.
First microcomputer released in the IBM PC model line and the basis for the IBM PC compatible de facto standard.
IBM referred to these as "I/O slots," but after the expansion of the PC clone industry they became retroactively known as the ISA bus.
One with a specification that facilitates the discovery of a hardware component in a system without the need for physical device configuration or user intervention in resolving resource conflicts.
Initially all expansion cards for the IBM PC required physical selection of I/O configuration on the board with jumper straps or DIP switches, but increasingly ISA bus devices were arranged for software configuration.
Bus standard for IBM PC compatible computers.
In comparison with the AT bus, which the Gang of Nine retroactively renamed to the ISA bus to avoid infringing IBM's trademark on its PC/AT computer, EISA is extended to 32 bits and allows more than one CPU to share the bus.
Feature of computer systems and allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU).
With the IBM PC/AT, the enhanced AT Bus (more familiarly retronymed as the ISA, or "Industry Standard Architecture") added a second 8237 DMA controller to provide three additional, and as highlighted by resource clashes with the XT's additional expandability over the original PC, much-needed channels (5–7; channel 4 is used as a cascade to the first 8237).
American information technology company founded in 1982 that developed, sold, and supported computers and related products and services.
Although Compaq had become successful by being 100 percent IBM-compatible, it decided to continue with the original AT bus—which it renamed ISA—instead of licensing IBM's MCA.