NegativeCharge

Thanks - I've only tested on an FPGA (don't have real hardware) and that works fine. Also the output from other emulators (b2, jsbeeb, BeebEm) matches the output I hear...

Thanks Steve for looking into this. It's very possible the code is affected by this. You can see Simon's original source here: https://github.com/simondotm/vgm-player-bbc/blob/master/lib/vgcplayer_bass.asm There's also a compiled .ssd in the...

Thanks Steve. That does indeed fix the artefacts I was hearing. There's some potentially relevant detail on this here: https://www.stardot.org.uk/forums/viewtopic.php?p=243442#p243442 "The SN76489 datasheet specifies that it requires 32 clock cycles...