BCM motherboard information
This is what I have found on my harddisk, it is by no means complete. I do not own a BCM product nor do I know anything specific about these motherboards. This is all the information I have got.
LX770
  FM567/FM568 incomplete, yet useful info
  FM540/FM541 incomplete, yet useful info
  SQ572 Kaimei was selling this under another 
  name or was it BCM selling a relabeled Jamicon board?
  SQ573 zipped scans from the manual