Apparently latest flashrom fails to detect the eeprom on Abit SM5 rev. 1.5 motherboard.
As requested, here's the details attached with this e-mail.
[attached flashrom -V, lspci -nnvvxxx, superiotool -deV' and also the BIOS files and flasher program]
Forwarded without the SM5.ZIP files :) Please ask me when you need them to look at!