asterisk users - Feb 2006 - HST Saphir III ML PCI and Linux/Asterisk

I have finally stumbled across a PCI Multiport BRI adapter available in
Australia, but I have a sinking feeling that while it _may_ support
CAPI2.0, the drivers are probably closed source.

Can anyone please confirm or deny that the HST chipset has open sourced
drivers and works with Asterisk under Linux?

Thanks

James