资 源 简 介
The following program allows an 80C51family microcontroller to load most of its codeinto a RAM over a serial link after power upand execute out of the RAM for normaloperation. This can allow a final product tohave firmware updates done by a simplediskette mailing. Such a program is oftencalled a “bootstrap loader”.For this example, it is assumed that the codedownload is done via a serial communicationlink, although the program could be adaptedto other forms of download. The comments atthe beginning of the listing are intended todocument the program and its usecompletely.
