Encyclopedia > AT bus architecture

  Article Content

Industry standard architecture

Redirected from AT bus architecture

Industry Standard Architecture (in practice almost always shortened to ISA) is a bus standard for IBM compatibles that extends the XT bus architecture to 16 bits. It is designed to connect peripheral cards to the motherboard. The protocols also allows for bus mastering although only the first 16 MB of main memory is available for direct access. In reference to the XT bus architecture it is sometimes referred to as AT bus architecture.

Since the late 1990s most IBM PC motherboards have been designed with several PCI slots and few or no ISA slots. System manufacturers often shield customers from the term 'ISA bus', referring to it instead as the legacy bus (see legacy system).

See also:


Article based on Industry Standard Architecture (http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?query=industry+standard+architecture) at FOLDOC (http://www.foldoc.org), used with permission.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
U.S. presidential election, 1804

... election, 1804 Presidential CandidateElectoral Vote Party Running Mate(Electoral Votes) Thomas Jefferson (W) 162 Democratic-Republican George Clinton ...

 
 
 
This page was created in 35 ms