| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus that prevents a reduction in transfer band of data transfer with high priority during data transfer of image data between various memories connected to various devices, so as to constantly enable efficient data transfer. ! SOLUTION: This apparatus includes data transfer control means provided in a controller ASIC 101 for performing data transfer of image data through direct memory access control from an any memory from among a local memory LM 105 connected to an engine ASIC 102, an image memory I-Mem 106 connected to the ASIC 101, and a virtual memory V-Mem 108 connected to a processor SOC 103, to another memory. In the data transfer performed in cooperation with the ASIC 102 upon the reception of an instruction and control of the SOC 103, the data transfer control means performs data transfer arbitration processing of determining the order and if the data transfer can be performed or not on the basis of a result of comparison of pre-set priority, |
