via this auction
"In short, this is a micro-controller based module that offers you the ability to program it"
via SynthModules.com
"The SynthModules PSIM-1 by Brice D. Hornback, is a unique module unlike anything ever available before for your analog modular synthesizer. It is fully compatible with Blacet, PAiA, and the Wiard 1200 series modules. The heart of this module is a powerful miniature computer (microcontroller) that processes 100,000 instructions per second. It is programmed with your Windows based PC in a simple and easy to learn form of BASIC."
