| 摘要 |
PURPOSE:To prevent a user from making a misjudgement as a fault by inhibiting a next command signal from being accepted until the task operation of a command signal in a VRAM ends. CONSTITUTION:A microcomputer sets a period T0 wherein a next command signal B0 is prohibited from being accepted as shown by F while graphic data read out of a ROM are written in the VRAM, namely, until a screen display corresponding to the command signal B0 is started. Namely, when a menu key is operated again at time A2 in the prohibition period T0, the command signal B0 is supplied to the microcomputer as shown by B, but this command signal Bo is never accepted for the 2nd time. Therefore, the command signal B0 is generated by operating the menu key and even when the menu key is operated again in the inhibition period T0, the screen display corresponding to the command signal B0 is made. |
