Dear reader,
my Asus m2n-mx motherboard seems not supported by Flashrom. The w39v040c was not found automatically, so I tried a forced read. The flashrom dump and the original bios are very similar but not the same. In case you want to have a look at the dump, I included a link to the file. If you need extra information, please let me know.
Ted Crilly
Motherboard: Asus m2n-mx rev. 1.06G
Flashrom (visual inspection): Winbond PLCC32 w39v040cpz 4548323002 632fafa
SuperIO (visual inspection): ITE it8712f-s 0714-kxs zm2s50 L
BIOS: (Bios version 1004 adds protection from downgrading BIOS version) ftp://ftp.asus.com/pub/ASUS/mb/socketAM2/M2N-MX/M2NX1004.zip
DUMPED BIOS forced read: (flashrom -f -r -c W39V040C m2n-mx.bios1004_dump) http://datastructuur.nl/flashrom/m2n-mx.bios1004_dump