]Now i have a 3 questions for you: ]The build seabios (bios.bin.elf) is about 1MB in size...,
The seabios web page has links to prebuilt binaries. You could start off using one of these known-good seabios binaries to eliminate unknowns.
]I didnt put VGA bios so far into the coreboot.rom.
If you see the F12 message on the connected monitor, then a suitable video bios has been found and used.
By the way, I have this exact board sitting on the shelf. If I can dig up a suitable power supply, I might give it a try.
Thanks, Scott