[SeaBIOS] Adding non standard VGA modes

Hi all, I want to ask if it is possible to add non standard VGA modes like 800x480 to seabios vgabios implementation. I want to be able to use it for qemu. After looking at the code I am puzzeled about the "random numbers" e.g. [1]. Can you hint me to any documentation or books I can read to understand what they are doing? best regards, Bernhard 1 http://code.coreboot.org/p/seabios/source/tree/master/vgasrc/vgatables.c -- Scanned by MailScanner.