| 摘要 |
PROBLEM TO BE SOLVED: To raise the transfer rate of data when a buffer means is arranged between an LSI for image processing and a data storage means in a display controller for a game machine. SOLUTION: When a VDP 134 continuously outputs an address signals a plurality of times in order to call image data having a size not to be output by one-time data signal, from a character ROM 136, the VDP 134 outputs the address signal Address (1), and then outputs the succeeding address signal Address (1) before a data acquisition time of the preceding address signal elapses. The VDP 134 outputs the succeeding address signal Address (1), and then acquires a data signal Data (4) based on the preceding address signal Address (1). Consequently, the transfer rate is raised by shortening a transfer time by one-page unit for the portion of a delay time generated in a level shifter 200. COPYRIGHT: (C)2008,JPO&INPIT |
