8bit breadboard computer
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ANDOR - 8 bit breadboard computer

This is ANDOR (AND-OR) my 8-bit breadboard computer. Inspired by Ben Eater and his series about building an 8 bit computer: http://eater.net

⚠️ Please note that this project is under development and the hardware might change over time.
Check back sometime or follow me on YouTube

YouTube: https://www.youtube.com/playlist?list=PLOlxf8qMiBT00kGVkUlEaljKMdjT1aq8r
Shematics: https://easyeda.com/blintux/andor


  • 8 bit data/address bus
  • 256 bytes memory
  • A, B operation registers
  • Stack register
  • Flag register. Flags: Carry, Negative, Overflow, Zero
  • 16x2 LCD display
  • Real Time Clock
  • Input port for controller
  • Program loader port (parallel)
  • Assembly complier and loader application for Windows

Future Work

  • 64 KB memory
  • Graphical LCD display
  • Sound module
  • New program loader port: serial (support USB->serial data transmission)
  • More assembly instruction

Modules overwiew