On March 30, brian wheeler wrote: In 1985-1987 I worked at Princeton University (I think I may have mentioned this at one point) on the Navier-Stokes Supercomputer project at the Moody Fluid Dynamics Laboratory. I was responsible for the Switching Board, a big board full of TTL that functioned as a big crossbar switch between processors and memory planes. The boards in the NSC machine were Unibus form-factor; we used the OEM version of the PDP11/24 chassis which came with no labels and no backplane wiring. The Switching Board was wall-to-wall 74LS series chips...mostly 74LS244s...packed as closely as possible. If memory serves they were 14,000 wires per board or so. Doing that without a gun would have been...well, impossible. It was tedious, but I enjoyed it anyway. What was especially enjoyable was seeing the first test program running through vectors, outperforming a uniprocessor Cray XMP on $2K worth of hardware in a desktop chassis. :) -Dave -- Dave McGuire "...it's leaving me this unpleasant, St. Petersburg, FL damp feeling on my shorts..." -Sridhar