Patent ID: 6025855
Filing Date: 2000-02-15
Classification: G06T,G09G

Abstract:
A method for communicating graphics device status information to a graphics driver comprising the steps of:checking status of a graphics device to determine whether said graphics device is ready to process a next instruction;updating a location in cacheable memory accessible to a graphics driver, said location being updated with said status, said status to be read by said graphics driver to determine when to generate said next instruction for processing by said graphics data;generating a first instruction to be forwarded to said graphics device;updating a status in an operating register in said graphics device indicating that an event is being monitored, said updating being performed in response to receipt of said first instruction by said graphics device;performing a first write of said status to a second cacheable location in system memory accessible to said graphics driver; andgenerating a second instruction providing a predetermined address and instruction completion data to said graphics device, said generating being performed by said graphics driver.