EISA is short for Extended Industry Standard Architecture. The bus mastering support provides access to 4 GB of memory. The EISA bus can provide compatibility support to older XT and ISA devices. A lot of EISA cards are mostly network adapters of SCSI cards. EISA has bus mastering functions integrated into it, as well as burst mode, software configurable resources and 32-bit data/address buses. EISA easily became the standard before PCI devices were invented.
The EISA Bus was developed by the "Gang of Nine" as an alternative to IBM?s Micro Channel Bus. It incorporates many of the features of the Micro Channel Bus while maintaining compatibility with its predecessor the ISA expansion boards. The ?Gang of Nine? includes AST, HP, Compaq, NEC, Epson, Tandy, Zenith, Olivetti and Wyse. The EISA Bus received very limited use in 386 and 486 based computers in the early 90?s. It is now obsolete because the PCI Bus replaced the EISA Bus as soon as Pentium based computers hit the market.AUTHOR
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