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It is not too late to downgrade the sample rate back, or I can add an option. I also thought to hook up the Ear Shaver EX sample drums code, but decided it makes the engines much similar. So I attempted to tweak up the existing code, thinking that a higher sample rate would allow for better hi-hat sounds.

Good, will include it into a next release.

Actually second version is already here, along with minor fixes for the first one.

So, here is two flavors of the engine: QChan24 and QChan25. The difference is that it has 4 or 5 channels. The sound generation algorithm is the same, but the implementation is quite different. QChan25 obviously has a bit lower sound quality and takes even more memory to store song data.

Will include it into the 1tracker package after some testing.

QChan is a tough engine to master with its weak low end, and AtariTufty certainly is the black belt master.

I really like how this single-pin approach in QChan managed to maintain many of the Follin's multi-pin qualities without the vacuum cleaner background drone, it was a happy accident rather than a conscious design back then.

Maybe it is time to give it some small update, tho? Sampled drums perhaps?

Another compo is nearing: Quantum Oscillation Party

This is a weird one, but may be a nice fit for the beeper: noise art. Includes an oldschool computer noise music, which is music made of noises. Seems to be a good case for the noise channels in our beeper engines, if you're in the experimental mood.

I was thinking about a Sqeeker-type engine with two pitchable non-interrupting sample channels. At least a couple tone channels wouldn't hurt, and the pitchable samples that can tune in to proper notes should open up a whole new lot of possibilities.

No voting results yet, but it is sure a win in the engine diversity category this time. Like, each of the six entries used a different engine, including some of the lesser used. Neat!

Actually, a bigger update. All plugins were cleaned up and updated. The output levels normalized between all plugins (were all over the place), all synths got the modulation setting (depth, speed), some got extra velocity or modulation targets.

Legacy code is dropped out, so a bit of incompatibility with the older versions got introduced, so use old builds for older projects.

Heh, the more fun is that Sol-20 Music System has been 'borrowed' for the RK86 back in 1988, and published as a hex dump in a paper magazine. It is even still called Music System (MS 3.2).

Oh my, I actually never thought it could be done this way, via in/out. Never looked up ZX81 either, as I expected it to be just a regular output register.

So I guess they're connected tape output just to the IOWR, because it is the only writable I/O port, and thus saved a trigger/register. And when extra devices with writable ports added, you'll get a buzz on the tape output when they're accessed.

Another weird method of controlling a speaker is found in the 8080-based Soviet DIY computer RK86. It lacks any interrupts whatsoever, so EI/DI control the speaker.