Patent ID: 6141023
Filing Date: 2000-10-31
Classification: G09G

Abstract:
A method for an efficient display flip comprising the steps of:checking status of a graphics device to determine whether said graphics device is ready to process a first next frame data for display on a display device;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 initiate processing of said first next frame data for display;generating a first instruction having a starting address of said first next frame data for the next frame to be displayed, said instruction forwarded to said graphics device;updating a status in an operating register in said graphics device indicating that a display flip is pending, said updating being performed in response to receipt of said first instruction by said graphics device;performing a first PCI master write of said status to a first 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.