On Monday 02 March 2009, David Griffith wrote: I think that the easiest way to do this (and what I would probably do) would be to put some sort of microcontroller in line with the console port, and make it use ODT to do front-panel functions. That won't get you a switches and lights register, but it'll get you most of the functionality that is available on a Unibus-11's FP. With a little bit of hardware hackery (probably not even that much, if you don't mind modifying a console SLU board to do it), you could probably even put a switch and lights register on the QBUS, along with intercepting the console port for ODT. Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

On Mar 2, 2009, at 4:33 AM, David Griffith wrote: I don't know anything about it specifically, but just from thinking about it...I think the best you'd probably be able to do is address and data LEDs, plus RUN, and maybe a few others...not much more (i.e., no address spaces, processor states, etc) because the signals aren't brought out to the pins on the J11 chip. But if that'd be enough, you could probably do it by using some buffers to drive the LEDs, and doing DMA cycles onto the bus for the switches. I'd probably take a whack at it if I had some time. -Dave -- Dave McGuire Port Charlotte, FL