RC2014
The Musical Box - first steps in programming the YM sound chip
https://youtube.com/watch?v=xRAbpwMwNak [Embed]
"The musical box in this case is an RC2014. The tune won't win any awards, but I am very pleased with my progress on my music driver. I had already written a program to convert my music notation to a kind of bytecode. Here my driver for the RC can now play that back. Today I've been learning how the AY/YM chip does envelopes, and the answer is 'in a very limited way'. They're limited to basic ramps, and there's one envelope generator on the chip. So I've written my own envelope generator that I can apply to each voice separately, by controlling the volume. Although there are only 15 levels of volume per voice, which means that you can hear the steps, especially at the upper levels, you can alter the volume separately for each voice, without an audible click, something that the AY/YM chips have over the SID!"
Making Notes May 25, 2020