Sparcstation Voyager media?

Hey folks, This is a question about a piece I have in my personal collection: a Sparcstation SS240 Voyager. It's a sun4m architecture luggable workstation with an LCD screen. The whole thing fits into a large shoulder bag - large enough it wouldn't be accepted for carryon luggage. It's cute, and it runs (after I replaced the NVRAM chip). When I got it, the machine had been set up with NetBSD, but being the masochistic sort I am I wanted to restore it to its original software. It just so happens I had Solaris 2.6 and gave it a crack. Solaris starts up just fine, but the device won't go into CDE, claiming that it can't find the framebuffer driver. Looking at the firmware, I see that it identifies a device called bwthree. Solaris 2.6 has a driver for bwtwo, but I've been unable to find a bwthree anywhere. (Google gives me pages and pages of "BW3," refusing to believe I want what I typed. Sometimes software is too helpful.) The original documentation for the Voyager describes custom install media - which presumably includes this driver. Does anyone happen to have such a CDROM? Can you confirm for me that there is in fact a driver so named? And if you have a running Voyager, is that what's in your /platform/kernel/drv directory? Otherwise, I guess I could just run NetBSD, but it's just not as fun. :) Thanks - Ian