| 摘要 |
PURPOSE:To modify easily the address of a command executed after initialization is terminated by adding a means for fetching a signal on a bus signal line when an initializing signal is inputted. CONSTITUTION:The microprocessor 1 of an information processor is constituted of a receiver 4 for receiving a signal on an initializing signal line 101, a receiver 6 for receiving a signal on a bus signal line 103, a receiving try state driver 7 and a D-type flip-flop 5. A try state driver 8 as an external circuit is con nected to an initial start address specifying signal line 107, so constituted to input an action mode switching signal, and transmits an initial start address specifying signal. Thus the signal of a signal line 107 is held by the D-type flip-flop 5 and outputted to an initial start address signal line 106. When the signal of the signal line 101 goes to '1', the microprocessor 1 decides the address of the command executed first with the aid of the signal of the signal line 106 and starts a normal action. |
