Is there any spare room on the bios chip itself? Is it possible to write information to the bios from say a +c+ program running on the OS?
unfortunatly i dont think so, most BIOS's have room for 2 or 4 Mb which is usually filled to the limit, but someone else may have a different opinion so stick around for that
The CMOS chip actually has a form of EEPROM flash capacity. Its used for flashing it with an updated BIOS from the manufacturer website. While in theory you could overwrite it with your own program, it is only in theory. How you would go about preserving the initial boot up sequence instructions and then append your own code is anyone's guess.
If your code was only to be stored there..ie..nothing be pointing to it, and leave the manufacturers untouched it shouldnt create problems or am i wrong to assume that? Is there such a device that will read the stand alone contents of the bios? say like an eprom reader/programmer where you just pop in the chip and it gives you its stored values?
I don't have anything to see why not, however the BIOS EEPROM chips don't have a lot of space. I don't know if motherboard companies leave space or not. The BIOS ROM chips are in either 2Mb or 4Mb capacities...and that's megabit not megabyte...so you've got either 256kB or 512kB to work with. Not a whole lot to work with.
