The PC532 port of NetBSD has a driver for this device, or at least one like it. Not exactly on target, but if you are up to doing it yourself, that will show you generally how to do it. Ken Kelsey Jordahl writes:
I have an old Asante SCSI ethernet adapter that I would like to use as a second ethernet connector with a Sparc 5. Can anyone confirm or deny that this adapter will work with a Linux Sparc?