Method and apparatus for extending a computer bus

Details Method and apparatus for extending a computer bus Method and apparatus for extending a computer bus

1993-04-13

1994-06-28

Chun, Debra A.

Boots, shoes, and leggings

364DIG2, 3649295, 36493547, 3649501, G06F 1340

Patent

active

053254910

ABSTRACT:
Disclosed is a bus expansion unit for extending the bus of a computer system which has an asynchronous bus cycle. The bus expansion unit includes an asynchronous state machine which uses a delay line to determine some of its states. The bus expansion unit recognizes the address and bus status and holds or latches a select signal. In addition, the bus expansion unit delays the -CMD signal until the peripheral has the opportunity to place valid data on a bus channel. In addition, the bus expansion unit includes an arbitration circuit for the peripheral attached thereto.

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IBM Technical Disclosure Bulletin, vol. 29, No. 2, Jul. 1986, "Bus Extender For The STD Bus".
IBM Technical Disclosure Bulletin, vol. 26, No. 12, May 1984, "Bus Extension System", T. Yanagi.

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