* Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net [071127 19:29]:
There are also BIOS flash chips which have an additional 4kB for parameter storage. This 4kB segment can NOT be accessed in the usual way. It also is not affected if you erase or write to the chip.
Interesting. Have a part number or data sheet?