Hi. I 've been doing some testing of the PWM technique to play samples (thanks Phaeron and Xuel for the examples). Is nothing great, but I think that maybe the code could be of use to people doing similar experiments.   It's for a 1Mb cart and there are two small songs only, but in different qualities. The options are: 1 - Song 1, PWM at 15720 Hz, sample values between 0 and 109, a little lower than 7bit depth. "Normal" PWM quality, with one sample per scan line. 2 - Song 1, PWM at 21013