On Jan 11, 2012, at 7:02 AM, Nick Allen wrote: This is a Sun-2 arrangement, used to attach the (serial) mouse and keyboard using RJ11s to the DA15 on a VME processor board. The multibus 2/120 and 2/170 both express the RJ111 connectors directly on the back panel, and does not use a DA15 adapter. A Sun 100(u) will have a Sun-1 framebuffer (which has no keyboard or mouse interface), and use the (parallel) interface on the processor for keyboard (DB25) and mouse (DA15). They are totally different arrangements. I have never seen nor heard of a Sun 100 which uses a Sun-2 keyboard, though it's certainly possible somebody did this after making some more or less significant alterations to the back panel cutouts (and limiting himself to a single memory board as there are only three slots in a Sun 100 sharing the P2 bus necessary for the CPU to connect to memory and the Sun-2 framebuffer). This would be a pretty egregious thing to do to a Sun 100 now and I think in practice, at a time when it would have not been so egregious, an extremely unlikely modification. ok bear. -- until further notice