Video controller with shared configuration pins

Details Video controller with shared configuration pins Video controller with shared configuration pins

1994-10-31

1997-09-23

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345112, G09G 500

Patent

active

056709838

ABSTRACT:
A video controller has one or more shared pins coupled to respective configuration signals. The shared pins are also coupled to other devices external to the video controller. Responsive to a reset signal, the configuration signals are stored in a configuration register. At other times, the external devices can overcome the configuration signals such that the shared pins may be used for other operations of the video subsystem.

REFERENCES:
patent: Re33916 (1992-05-01), Saenz et al.
patent: 4928306 (1990-05-01), Biswas et al.
patent: 5325109 (1994-06-01), Duckworth

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