| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily switch between a debugging environment and a normal operation environment without using an exclusive switch. <P>SOLUTION: A CPU 1 is provided with normal processing ports P1 to P3 and a boot control detecting ports B1 to B3. The normal processing ports P1 to P3 and the boot control detecting ports B1 to B3 are connected to be the same logic as the ON/OFF of switches SW1 to SW3 to be used for selecting normal functions. In the initial state of equipment, in which the switches SW1 to SW3 are turned off, the boot control detecting ports B1 to B3 becomes "high", "high" and "low" states respectively and normal start from a NAND flash memory 100 is executed. When the switches SW1 to SW3 are simultaneously selected to be turned on, the logic becomes "low", "low" and "high" states and boot start from a memory card 101 is executed. <P>COPYRIGHT: (C)2009,JPO&INPIT |
