System and method of positively determining ISA cycle claiming

Details System and method of positively determining ISA cycle claiming System and method of positively determining ISA cycle claiming

1996-12-31

1999-10-19

Auve, Glenn A.

Electrical computers and digital data processing systems: input/

Intrasystem connection

710101, 710107, 710126, 710128, 710 36, G06F 1300

Patent

active

059681519

ABSTRACT:
A system and method in accordance with the invention permits the full support of two ISA buses, a local ISA bus and a second ISA bus. To do so, upon receiving an access cycle, the cycle is directed to the second ISA bus. The second ISA bus is monitored for a signal event which indicates that an ISA device is claiming the cycle. If the signal event does not occur, the cycle is directed to the local ISA bus.

REFERENCES:
patent: 5533204 (1996-07-01), Tipley
patent: 5568621 (1996-10-01), Wooten
patent: 5621900 (1997-04-01), Lane et al.
patent: 5715411 (1998-02-01), Verdun
patent: 5724529 (1998-03-01), Smith et al.
patent: 5781748 (1998-07-01), Santos et al.

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