Last weekend the #6 issue of Atari Fan
was released. I was looking forward to that mag, because there's been a thing that was teased for over a year - 23 page writeup on making one channel POKEY bass
A lad going around as "Pavlos" compiled all of the useful info from the internet into one article, complete with explanations and tables.
I am currently in process of translating the entire thing. As it's quite long and in detail - and in conjunction with my sub-par tech knowledge - it'll take a while.
BUT FOR NOW I am able to give you the short version, which gives you "the meat" of the process.
"C" basses are sounds which belong to one of the four of the C distortion categories - C2. In this category you have three sounds available: T0, T1 and T2. The only frequency-independent sound is T1. It's only available on sampling track ST1.
In order to get stable (consistent) sound of the distortion C in C2 category while using div28 (64kHz = usual POKEY tuning) or phi2 (1.77MHz) you have to do one-time synchronization to sampling track ST1 and keep that track using only frequency dividers that are in the M3 set. If using 8-bit tunings you can use the divider table shown in table 18. In case of using div114 (15kHz) base clock there's no need to synchronize but you have to use channel 3. All dividers for div114 clock belong to set M3, and channel 3 has the ST1 track assigned by default.
is the aforementioned "Table #18".
"M3 set" is explained within the article, but I haven't reached it as of now - not required in practice as the fitting dividers are listed in the table
As of writing I am not aware of any music software that makes use of this technique.
Hopefully some will appear soon : D hope yall have a nice day