| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a data processor capable of allowing flexible mapping of a program, which is initially loaded from an external memory, on the external memory using a simple configuration. <P>SOLUTION: A data processor which executes a program initially loaded from an external memory to a RAM is provided with a boot loader controller. The boot loader controller reads transfer control information from the external memory in response to a given reset instruction, downloads a program from the external memory using address information indicated in the read transfer control information, transfers the downloaded program to the RAM, and instructs a central processing unit to cancel the given reset instruction upon completion of the transfer. Thus, it is only necessary to provide transfer control information on the basis of program mapping on the external memory, which would allow flexible mapping of programs on an external memory just with a simple configuration. <P>COPYRIGHT: (C)2012,JPO&INPIT |
