Whats this for? Commodore did a version of the 8375 when this was end of life before they closed down. It doesnt require anything difficult to do except adding a couple small mods to the board used in for 3000 or 2000 machines. I have several if you want some info on the process. Its simple single point soldering is all, and adding a resistor. The instructions sent to official repair centers back in the day is available and I could sent it along with the Agnus if you needed one and cant find it.