1995-05-26
1998-08-18
Harvey, Jack B.
395511, 395304, G06F 1300
Patent
active
057969604
ABSTRACT:
A computer system is comprised of at least one of a main bus and an attached expansion bus, a CPU connected to the main bus, peripherals connected to one of the main bus or to the expansion buses, a subsystem connected to a bus for receiving control, address and data signals from the CPU comprising a graphics controller, a data compression circuit, a video controller, a memory connected to data input ports of the circuits and controllers via a subsystem bus having a bandwidth sufficient to carry video and graphics display signals, a first arbiter for determining which controller is permitted access the memory, a link bus connecting each of the controllers, and apparatus for providing polling signals to each of the controllers and circuits on the link bus and for receiving acknowledgement signals therefrom, and thereby synchronizing and allowing exchange of control information between the controllers and circuits.
REFERENCES:
patent: 5276887 (1994-01-01), Haynie
patent: 5335321 (1994-08-01), Harvey et al.
patent: 5461679 (1995-10-01), Normile et al.
Alford Michael A.
Bicevskis Robert P.
Caruk Gordon
Hartog Adrian H.
ATI Technologies Inc.
Harvey Jack B.
Wiley David A.
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