I received a PM from OPLx requesting info on the E-Tracker format. I have not posted enough to be able to reply to PMs, so here we go: E-Tracker source modules are approx 80K and in a proprietary format - I wrote a brief description for Fred 34 , see appendix B. Most distributed files, for example …

After a quick flurry of activity over on the sam-users mailing list I had to pull out the debugger and determine how DTA pulled this off. 1c: 02 - frequency reset (all channels) 1b - 00: 00 - zero all registers, tone 0 octave 0 -> 31 Hz tone 01-04: 88 - channels 1-4: medium amplitude 11: 11 - …

Really great to see this! You might want to take a look (or listen) to these: SAM Coupé: Algorhythmic - stereo oscilloscope view (100% volume) - this one is the "standard" approach using the envelope generators SAM Coupé: Bacardi - stereo oscilloscope view - this one seems (I'm guessing here) to be …