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 NEDONAND - a CPU made from NAND gates 
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Joined: Wed Jan 09, 2013 6:54 pm
Posts: 1111
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Using through-hole 74-series parts, and with a nice diode plugboard for a 16 byte ROM, with an open source design and a modular motherboard/daughterboard construction:
https://hackaday.io/project/9795-nedona ... -16-tested
https://hackaday.io/project/9795-nedona ... w-computer

See also
http://nedocon.com/

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(Can't post a photo of the diode ROM- images are too big.)


Wed Apr 06, 2016 4:48 pm
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Joined: Tue Dec 11, 2012 8:03 am
Posts: 257
Location: California
What a great way to make the diode ROM easily reprogrammable!

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http://WilsonMinesCo.com/ lots of 6502 resources


Wed Apr 06, 2016 8:15 pm
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Joined: Wed Jan 09, 2013 6:54 pm
Posts: 1111
It is very nice, and it makes it a visual ROM too.


Wed Apr 06, 2016 8:21 pm
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