| 摘要 |
PROBLEM TO BE SOLVED: To provide the display controller of a game machine restorable to a normal operation after the lapse of prescribed time even when abnormality that interruption signals to be the timing of the transfer of image data are not outputted from a plotting device is caused by the effect of noise or the like. SOLUTION: The CPU of this display controller prepares the image data based on display information transmitted from an accessory controller, then transfers the image data to a VDP in the case of receiving V BLANK interruption within prescribed standby time (x) for waiting for V BLANK interruption signals from the VDP and resets the initial data of the V BLANK signal output permission of the register of the VDP at the time of not receiving the V BLANK interruption within the standby time (x). |
