Doesn't the debugger give you pin13 digital behaviour anyway? (12-bit PIC is fully emulated - isn't it?)
I had recorded the pins in audio mode with a logic analyzer (Zaleae Logic 16) in PulseView (Linux Mint) after I dumped the rom. The signals are quite interesting to see how the phasing effects work (likely canceling out 2 waveform pins to produce the pauses of the square LFO, or does it saturate the transistor by shifting its operating point??).
