| 摘要 |
PURPOSE:To improve the plotting processing speed required for the update of destination data. CONSTITUTION:This processor is provide with at least a source/register 105 storing source data, a plotting arithmetic kind storage register 106 storing plotting arithmetic kinds preliminarily, a plotting arithmetic unit 107 inputting destination/data and source/data fetched via a data input/output signal terminal and executing the logical operation of these two data, a bus/cycle generator 108 reading destination data, transmitting it to the plotting arithmetic unit 107 and writing the destination data outputted and updated by the plotting arthmetic unit 107 in a bit map memory, and a destination reading cycle elimination mechanism 111 deciding whether plotting arithmetic information is a dependent type plotting operation or an independent type plotting operation and eliminating the reading cycle of destination data by the bus/cycle generator 108 in the case of the independent type plotting operation. |
