i have been having problems with mach turn and an mpg. i had a mpg connected to a pokeys , in ports and pins /mpg/ had port 10 pin 1 for A.port 10 pin 2 for B.decided to use pport instead and so chose port 1 pin 10 for A. port1 pin 11 for B.so i save and works properly. when mach is shut down and restarted, the configuration of the pokeys, port 10 is there.if wont stay changed to port 1.