full-disclosure - Bios programming...

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Message-ID: <42277566.9070509@csuohio.edu>
From: michael.holstein at csuohio.edu (Michael Holstein)
Subject: Bios programming...

 > Anybody know how to store a small program there?

It's easy. Use an EEPROM programmer.

On "write protected" BIOSes all you have to do is figure out which pin 
is write_enable (get a pinout from the web) and figure out if that pin 
goes to +5v or ground to do what you want. Jumper accordingly.

However, on most motherboards I've encountered, the BIOS is writable .. 
just boot to a minimal OpenDOS disk (or linux counterpart).

There are a lot of hacks out there for BIOSes .. the Linux BIOS project 
for example, or the ways you can get your non-raid IDE controller to do 
raid by installing the retail BIOS for the RAID version of the same chipset.

~Mike.