And finally, release. Getting the multi-boot code to work (so I could have one ISO that boots both sparc32 and sparc64) was a little uglier than I'd hoped, but it works reliably.
I'm going to take the portable SCSI cdrom drive home and test on some other machine types, but all the hardware in the pile at work, well, works fine.
Thats a U2 (smp), a U10 (up), an SS20 (smp) and... the SS2 (up). GUI install on the SS2 even. It doesn't know what driver to use for its SCSI card (esp), but its easy to select from the list.
Sun4d doesn't work at all. But thats the kernel's fault.