this is the url to the website : _http://www.geocities.com/mamanzip/
the material presented there mostly for award bios, but the "essence of the article" can be applied to other BIOS as well. This is not about how to crack the BIOS password, but how to play around with your BIOS binary, such as "injecting" your code into the BIOS or modifying the BIOS to suit your need. Happy reading .