PICTURE PROCESSING CIRCUIT, SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE PROVIDED THEREWITH, PICTURE STORAGE PROCESSING SYSTEM USING IT AND TEST METHOD FOR THE DEVICE

摘要

PURPOSE:To permit various graphic processings at high speed. CONSTITUTION:DRAM 11, a cache memory 12, a picture element processing unit 13, a comparison unit 14 and a serial access memory 15 are formed on one semiconductor substrate so as to make them into one chip. Data of 256 bits is transferred at once from DRAM 11 to the cache memory 12. In a picture element processing unit 13, an alpha-blend processing and a raster operation are executed, and a Z-comparison processing is executed in the comparison unit 14.