As of yesterday, OpenBSD/sparc64 has full support for Fujitsu's SPARC64-V processor. As far as I know OpenBSD is the first free operating system that supports this processor.
These processors are found in Fujitsu's PRIMEPOWER machines. The work was done on a PRIMEPOWER 250, so that model is known to work. This almost certainly means the PRIMEPOWER 450 works fine too. And there is no real reason why other models shouldn't work too. So if you have one of these machines, it would be great if you could try booting OpenBSD and send a dmesg. Make sure you grab a snapshot dated May 23 or later. Even if you have no opportunity to boot OpenBSD on your PRIMEPOWER there still is a way to help. I'm looking for the output of the 'prtconf -pv' command for these machines. I'd also love to receive that information for the SPARC Enterprise M4000/M5000/M8000/M9000 as well as any older Fujitsu SPARC64-based machines. Thanks, Mark