Interrupt driven Spectrum AY music playback on the RC2014

The sound card is available here, https://www.tindie.com/products/edbrindley/ymay-sound-card-pcb-for-the-rc2014-computer/ and the source code for the interrupt driven player is here: https://github.com/electrified/rc2014-ym2149/blob/master/player/interrupt/PTxPlay.asm

Using a Z80 CTC to generate a 50Hz interrupt to more accurately play ZX Spectrum Pro Tracker 3 tunes on my RC2014 with AY/YM Sound Card.

The oscilloscope at the end of the video was produced by first merging the two mono wavs to produce a stereo one:
sox -M -c 1 Audio\ 1-4%L.wav -c 1 Audio\ 1-4%R.wav output.wav

and then feeding this through ffmpeg

ffmpeg -threads 4 -i "output.wav" -filter_complex \
"[0:a]showspectrum=mode=combined:slide=scroll:color=fruit:scale=sqrt:s=1920x1080[ss]; \
[0:a]showwaves=split_channels=1:scale=sqrt:mode=p2p:s=1920x1080:colors=#9cf42f[sw]; \
[ss][sw]overlay=0:H-h[out]" \
-map "[out]" \
-map 0:a \
-c:v libx264 -crf 0 -preset ultrafast \
"spectrum.mkv"

Видео Interrupt driven Spectrum AY music playback on the RC2014 канала trilbyrollers