On: How fast can a 6502 transfer memory?

[vardump]

You can actually get about 6-7 bits resolution out of same SID volume register. 4 bits from the volume register, channel 3 disable and 3 filter bits. Requires some setup to get SID in a particular state first.

For details, see: https://livet.se/mahoney/c64-files/Musik_RunStop_Technical_D...

[weinzierl → vardump]

I was just wondering tonight, while lying awake, if you could get more depth by either using the other voices (probably not) or the filter. Now this paper and the demo are so cool, really made my day.

[vardump → weinzierl]

> using the other voices

Yeah, you can do that as well, well kinda, but it's harder, provides a lower maximum frequency and wastes more CPU cycles.

See: https://csdb.dk/release/?id=72678&show=notes

There have also been efforts to do "sampled" sound synthesis with C64's 3 voices, speech, etc. I don't remember any links about that, unfortunately.