Graphics function controller for a high performance video displa

Details Graphics function controller for a high performance video displa Graphics function controller for a high performance video displa

1989-01-17

1990-04-10

Brier, Jeffrey A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340744, 340799, 364521, G09G 100

Patent

active

049163019

ABSTRACT:
A processing system is provided that includes an external device connected to a processor. The external device has the capability of responding to external device commands wherein each of these external device commands is performed within at least one fixed time cycle. The processor provides these external device commands and, further, includes the means for executing instructions that not only specify the external device commands but also specify at least one internal command to be performed by the processor simultaneously with the performance of the external device command and within the same fixed time cycle. In the disclosed embodiment, a graphics display system is provided that includes a system processor, a graphic processor, a graphics memory and a display device. The graphics processor receives instructions from the system processor which specifies commands to be executed by both the graphics processor and the graphics memory. Each graphics memory command is executed within a fixed time cycle simultaneously with the execution of a corresponding graphics processor command executed within the graphics processor.

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Fundamentals of Interactive Computer Graphic, by James D. Foley and Andries VanDam, published by Addison-Wesley Publishing Company, 1982, pp. 433-435.
IBM Technical Disclosure Bulletin, vol. 28, No. 5, Oct., 1985, "Circuit for Updating Bit Map-Memory of a Display Adapter", pp. 2240-2243.
IBM Technical Disclosure Bulletin, vol. 27, No. 8, Jan., 1985, "Raster Graphics Drawing Hardware", pp. 4618-4622.
IBM Technical Disclosure Bulletin, vol. 28, No. 6, Nov., 1985, "Graphic Bit-B1t Copy Under Mask", pp. 2721-2724.

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