One of the only early 80s Williams games that featured stereo sound was Sinistar, but this was only in the cockpit version. This project shows how you can add this same original stereo to a Sinistar (upright) as well as add it to Joust and Stargate.

These are the steps for building the 2114 memory tester.

Manufacturer compatibility chart

List of supported modules for the Needham's EMP-20. Required programming module is listed in parentheses, (01A), (03B), etc

Device to Module compatibility list for the EMP-30. Modules are listed in parentheses. (301A), (303B), etc.

These are the steps for building the 2114 and 9114 memory tester.