Hi guys i'v build an OPL3 board, buying readymade PCB, but i have only one YAC512, and i soldered it on the PCB has shown on this image from the Thorsten tutorial : but i realized after that : "on my PCB this is the place for the second YAC, so i'll have only outputs 3 & 4 ! nevermind, i won't take more risk with the YAC, i let it there. " my two outputs #3 & #4 are working fine (with the Testtone app) Now my question : how can i set my only YAC (OPs 3 & 4) as the main YAC, so the CS will show me OPs 1 & 2 ? is it clear ? :-\