This repo. is for the CPU upgrade module I am designing for the Sequential Circuits, Inc. Prophet-600 synthesizer. The firmware for this module is Imogen's P600FW v2022, a newer and updated version of the famous GliGli P600FW mod. What's different is this board replaces the need for a modified Teensey++ 2.0, as it has the same AT90USB1286 microcontroller wired to all the same pins, except for the ones that need to be modified as per the original instructions.

Information about the original Teensey++ 2.0 board this is replacing: https://www.pjrc.com/store/teensypp.html.

My plan is to build up one of these boards so that I can upgrade my Prophet-600 and get some better use out of it making music.