| 摘要 |
PURPOSE: A bootstrap loading function implementing apparatus is provided to supply the function of the bootstrap loader for a micro controller or a processor without the bootstrapping function. CONSTITUTION: The bootstrap loading function implementing apparatus comprises a micro controller(10), an address decoder(20), an interface(40), a ROM(32) and a flash memory(34). The flash memory(34) stores a main program for the bootstrap. The ROM(40) stores a downloading program for downloading the bootstrap program to the flash memory(34) and routines for initializing the micro controller(10) and IC chips, and external I/O routines. The downloading program has at least a routine required for erasing the flash memory(34) and recording a downloaded data in the erased flash memory. The micro controller(10) performs an initial bootstrapping operation according to the bootstrap program stored in the flash memory(34), and downloading operation according to the downloading program stored in the ROM(32).
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