Bus controller with different microprocessor and bus clocks and

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Details

3642405, 364271, 3642703, 364DIG1, 395500, G06F 104

Patent

active

053054520

ABSTRACT:
The present invention provides a system whereby the microprocessor and the bus controller in a personal computer can be driven at different frequencies. Furthermore with the present invention the COMMAND DELAY and the WAIT STATE signals on the bus can be adjusted under program control.

REFERENCES:
patent: 3974479 (1976-08-01), Kotok
patent: 3984812 (1976-10-01), Dahlberg
patent: 4218754 (1980-08-01), Schaeffer
patent: 4257095 (1981-03-01), Nadir
patent: 4366540 (1982-12-01), Berglund
patent: 4414664 (1983-11-01), Greenwood
patent: 4435757 (1984-03-01), Pross
patent: 4438488 (1984-03-01), Shibayama
patent: 4486833 (1984-12-01), Daudelin
patent: 4509120 (1985-04-01), Daudelin
patent: 4519028 (1985-05-01), Olsen et al.
patent: 4654655 (1987-03-01), Kowalski
patent: 4727491 (1988-02-01), Culley
patent: 4750111 (1988-06-01), Crosby, Jr. et al.
patent: 4819164 (1989-04-01), Branson
patent: 4835681 (1989-05-01), Culley
patent: 5086500 (1992-02-01), Greub
82A306 Pin Description, CHIPS, pp. 22-41, 82C301 Bus Controller.
"Inside the PC's Three Bus Interface Designs for the PC" James R. Drummond, Byte, Sep. 1987, p. 225.

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