The man page says that the driver supports PCI and AGP video cards based on the following chipsets:
No mention of the Z9s chip set in the supported video cards, but maybe one or more of those cards is compatible with the Z9s chip. I can't tell from the git log (http://gitweb.freedesktop.org/?p=xor...git;a=shortlog) if the driver supports this chip. Can anyone tell me more? If video support is lacking this might not be a viable board for a home server.