Patent ID: 6914605

Claim:
A graphics processor, comprising: a receiving unit for receiving a graphics command from an external unit of the processor; a transferring unit for performing a data transfer operation to a memory; a display data generation section including a graphics command storing section for temporarily storing a graphics command which is input through a data bus from the memory, and a decoding section for decoding the graphics command which is output from the graphic command storing section for outputting the generated display data to the memory; an image display section for receiving the display data from the memory to display an image on a display device; wherein the graphic command storing section includes at least first data storing means and second data storing means having a check address, reads out graphics commands from selected one of the first and second storing means in a predetermined address order; and when an address of a graphics command is being read out matches a predetermined check address, the graphics processor compares the priority of storing a graphics command to the first data storing means with the priority of the data transfer operation.