| 摘要 |
PROBLEM TO BE SOLVED: To quickly display the movement of an object by embodying a sprite graphic with a hardware. SOLUTION: A window pulse generator 16 generates a window pulse by comparing a scan address to be inputted and the address of a window area to be supplied from the outside to output it to an address generator 18 and a priority encoder 20. A second multiplexer 24 supplies a write address MPU ADDR to be supplied from an MPU to a sprite memory 26 and supplies an address to be generated from the address generator 18 to the read address of the sprite memory 26. Then, it is inputted to an NOR gate 32 vis a second buffer 28. The NOR gate 32 performs the negative logical operation of the input value to supply the operation result to the selection terminal sel of a multiplexer 34. The multiplexer 34 selects and outputs one of data among input data by the value to be inputted to the selection termoinal sel. |
