This project describes a 1.8MB/2MB Trapdoor expansion for the Amiga 500. It includes the Schematics and PCB in the Autodesk Eagle format.

For a detailed description of the project including a comprehensive Theory of operation, refert to:

https://www.jm27.de/amiga-500-trapdoor-extension/

All the files are licensed under the GPLv2, please mention jmA500@metweb.de as the original author.

Acknowlegements go to Paradroid at the a1k.org/forum and Individual Computers for useful suggestions.