| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a software updating device capable of instantaneously updating software for controlling the operation of electronic equipment without stopping the original function of the electronic equipment. <P>SOLUTION: This semiconductor memory is provided with at least one first memory block in which software to be executed is stored and at least one second memory block in which software for update is stored. A comparator compares the address signal of a CPU with the contents of a conversion table to detect a timing when the software to be executed is not used according to instruction information stored in a register. A rewriting circuit changes the contents of the conversion table in order to exchange at least one first memory block with at least one second memory block according to the instruction information stored in the register. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
