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README.md

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68000 single-board retro-computing project

Designs and code related to the Motorola 68000 microprocessor.

Building the project hardware

  1. Order the board
  2. Order the parts from the bill of materials (BOM)
  3. Order the two FT232 USB -> serial breakout boards
  4. Order the chip sockets:
Layout Qty Width (inches) Notes
DIP-8 1 0.3 For the 555
DIP-14 17 0.3 For a lot
DIP-16 8 0.3 For even more
DIP-24 2 0.6 Double width: for serial interface
DIP-28 8 0.6 Double width: for RAM & ROM
DIP-64 1 0.9 Triple width: for CPU.

The DIP-64 can be a little hard to obtain, you could cut DIP-40 sockets to same effect. However, it's inadvisable to directly solder the CPU directly to the board. If the heat damages the chip, there's 64 pins to de-solder.

  1. Solder in the sockets. Applying some soldering flux can be of great help: the IC soldering pads are tiny, mainly to save space on the board.
  2. Solder in the rest of the components
  3. Flash the ROM chips
  4. Fit all ICs into their sockets
  5. Connect power (preferably through a lab bench power supply)
  6. Connect a PC to the board through USB
  7. Watch it boot
  8. Have some retro-computing fun!