Version 3

Version 3 changes the soldering pad for the switches so that a pin header can be installed.

It also adds the ability to directly drive the A12 line, see the README for details. Thanks to Tim Abraham for the help.

Note that the released gerber files are password-protected. The original reason behind my projects was to allow anyone to make their own retrocomputing accessories cheaply. Instead of this, what I achieved was actually fuelling greedy people grabbing my work, making boards for a couple of bucks and the selling them at outrageous prices ($15 for a badly-soldered OpenC64Cart that costs $2 to make is just ridiculous).

I still believe in free software and open hardware, and that is why my projects will remain as such. I am no longer providing ready-to-use gerber files, but you can still generate them from the KiCad project or ask me for the password, if you think you don't fit the above statement.

If all you want is to get boards made, I would really appreciate if you did it as explained in the Support section in order to get them cheaply while supporting the project, i.e.: just click on this button:

Note that you are still allowed to sell these boards, I have nothing against that as long as you do so at an "ethical" price. This is why I am adding the following restriction (inspired by DiagROM): if this board is sold at more than 5€ + production and component costs, 25% MUST be donated to a LEGITIMATE charity of some kind, like curing cancer for example.

Release 2

This release contains slight improvements over V1, which was already working well:

• Slightly improved ground planes with ground stitching below the EEPROM chip.
• Rounded corners.
• Minor routing adjustments.

PCBs are going to manufacturing soon.

First release

First release

THE PCB HAS BEEN TESTED AND WORKS!

But use at your own risk, as usual.

Pre-releases

These are work-in-progress pre-releases that are being added here only for historical reasons.

Note that the source code does not correspond to the gerbers.

DO NOT USE