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 [ 1 post ] 
 The Ostracod designs by Jack Eisenmann 
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Joined: Wed Jan 09, 2013 6:54 pm
Posts: 1640
A collection of small or minimal CPU designs and computers by Jack Eisenmann (found by Zaphod) - often with support such as emulators, C compilers, etc:

DUO Compact
A single-instruction CPU, 8-bit, TTL, fully designed and constructed with operating system and test applications.

Image

DUO Basic
An educational homebrew computer, prototype has been completed.

http://www.ostracodfiles.com/basic/IMG_1391_small.JPG

DUO Light
An ATMega328 based computer, prototype has been completed.

Image

DUO Decimal
An ATTiny84 based computer (has been for sale but now unavailable)

https://www.youtube.com/watch?v=G5EbSjDjMG4
Image

DUO Portable
An ATMega1284p based computer with LCD and qwerty keyboard
https://www.youtube.com/watch?v=MSd0tkPFdMQ
Image

DUO Capitol
8 bit microprocessor design. Not built but has an in-browser emulator

DUO Adept
Ambitious 8-bit TTL machine built in a storage box
Image

DUO 128 Elite
4-bit computer, built from 40 chips, with 64 nybbles of RAM, toggles + LEDs on front panel
Image

DUO 14 Premium
Relay machine, 55 relays, 48 bits of ROM and 14 bits of RAM
Image


Tue Nov 25, 2014 9:14 am
 [ 1 post ] 

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