I know that lots of tech-saavy people assemble their own computers, but has anyone here actually designed and built their own?

I am attempting to do this and so far, I've finished 0.001% of the computer. The only part built (designed actually, still awaiting parts) is a 64-bit adder-subtractor built from around 40 standard logic chips...


This guy here has built his own, so it looks like I've got a bit of competition! :p


Why am I posting? Partly to push down that FPN-bait thread, of course!