I built an eight-bit ripple-carry adder over the weekend and have just started the digging to take it up to sixteen bits.. I've seen a few theoretical designs for full adders on the wiki and such, but never a complete system.
See it in action here: http://mkv25.net/dfma/movie-1084-numberabbeydemonstration
The eight pairs of up staircases collect water from the adders, which flows to the intake for the drainage pump tower in the northeast.
This is two levels below the adders; the extra level of up/down stairs keeps water from unexpectedly backing up and preventing an output from properly draining when its state changes.
In the northwest you can see the walled-off excavations for the original pump tower, which I overhastily dug out just before realizing it overlapped the planned site of the 32 and 64 adders. - Kanddak
There are 11 comments for this map series, last post 2009-03-31
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