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Author Topic: Physical logic: ZX-1881?  (Read 840 times)
Prof. Brockworth
Snr. Officer
United Kingdom United Kingdom

Choppy Warburton rides again!

« on: August 27, 2007, 11:08:05 pm »

Years ago as a little nipper, I made some physical logic gates out of Lego.  They're not hard to do on their own: input levers and output lever(s), and little seesaws or X-shaped dinguses inside to make the workings.  I've always wanted to scale it up, to something like a ZX-81.  And immediately I think of Colossus, and the other valve-monsters of Bletchley Park, and it all seems a bit daunting.

How does the small-scale logic architecture relate to large-scale operations?  Is there such a thing as the AND-OR-NOT-NAND-gate map of a Z80 processor?  Or have I been at the brazing flux again..?

Recovering from pennyfarthing bruises...
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