Store double word and status word write graphics primitives

Details Store double word and status word write graphics primitives Store double word and status word write graphics primitives

1998-02-10

2000-02-15

Tung, Kee M.

Computer graphics processing and selective visual display system

Computer graphic processing system

Integrated circuit

345513, 345522, 345515, G06F 1200

Patent

active

060258551

ABSTRACT:
A method for communicating graphics device status information to a graphics driver. Status of a graphics device is checked to determine whether the graphics device is ready to process a next instruction. A location in cacheable memory accessible to a graphics driver is updated with the status. The graphics driver reads the status to determine when to generate the next instruction for processing by the graphics data. A first instruction to be forwarded to the graphics device is generated. A status in an operating register in the graphics device is updated indicating that an event is being monitored. The updating is performed in response to receipt of the first instruction by the graphics device. The status is written to a second cacheable location in system memory accessible to the graphics driver. A second instruction is generated by the graphics driver to provide a predetermined address and instruction completion data to the graphics device.

REFERENCES:
patent: 4598384 (1986-07-01), Shaw et al.
patent: 5440746 (1995-08-01), Lentz
patent: 5481276 (1996-01-01), Dickey et al.
patent: 5745761 (1998-04-01), Celi, Jr. et al.

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