Patent ID: 6633298
Filing Date: 2003-10-14
Classification: G06F

Abstract:
A method for creating column coherency in a frame buffer memory access command stream to facilitate burst building of frame buffer memory access commands in a system comprising a frame buffer memory:providing a multi-column data storage buffer having columns each of which corresponds to at least one the LSBs of a frame buffer column address; receiving a first frame buffer memory access command accompanied by first frame buffer memory access data and a first frame buffer memory access column address specifying a column in the frame buffer, the first frame buffer memory access column address comprising MSBs and LSBs; storing the first frame buffer memory access data in the multi-column data storage buffer at a first column that corresponds to the at least one of the LSBs of the frame buffer column which is addressed in the first frame buffer memory access column address; receiving a second frame buffer memory access command accompanied by second frame buffer memory access data and a second frame buffer memory access column address specifying a column in the frame buffer, the second frame buffer memory access column address comprising MSBs and LSBs; storing the second frame buffer memory access data in the a multi-column data storage buffer at a second column that corresponds to the at least one of the LSBs of the frame buffer column which is addressed in the second frame buffer memory access column address; and flushing the first and second frame buffer memory access data from the multi-column data storage buffer in column order.