On 8/30/11 4:54 PM, "Toby Thain" <toby at telegraphics.com.au> wrote:
-snip-
 
   The last release of SunOS to support 68K ("sun3x" kernel architecture
 for the 68030-based machines, the 3/80 ad 3/400, all others are "sun3")
 is 4.1.1_U1.  I have boot tape images, but not a CDROM image.  I don't
 think I've ever seen it on CDROM for 68K. 
 If memory serves, it's still on the CD-ROM alongside SPARC, if you know
 where to look. I don't have my SunOS CD-ROMs with me to check, though.
 --Toby
  
 
IIRC, you can boot the appropriate partition off the CD and get into the
appropriate installer for your architecture...
It has been a heck of a long time since I've booted any of the 4.1.x
cd's.... Should get my old sparc 1 machine out of storage and light it up.