Oh, I see... As there are fewer 0s than -1s and 1s, the direction change is too quick.
As you are using way more values than I did (like 3 times more), try interleaving them for smoothness. Something like this: ... -1 -1 -1 -1 -1 0 -1 -1 0 0 -1 0 0 0 0 0 0 1 0 0 1 1 0 1 1 1 1 1 2 .... Not an accurate example; just the general idea; kind of "dithering" the values.
I followed your and @Grauw advices and the table now looks like this:
Now dealing with musics generated by Arkos Tracker 2 (for now using an example song included with the program).
Using the AKG player and following the steps pointed out by @thegeps, the music is playing perfectly, BUT uses around 20 scanlines of CPU time, and even worse, when it don't fit on a frame, freezes the machine.
Accordingly with the docs, the player lighter on CPU is the AKY, but this one I wasn't able to make work yet...
Are you exexuting akg player from within the isr? This is the right way (if I'm not mistaken it abuses the stack, so if it's interrupted before the stack is restored...)
That's right, I forgot this detail.
Now it's inside the hook (H.TIMI, I copied this part of code from MsxLib).
Good news, no more freezing.
Bad news, is corrupting all the screen.
The AKG player is heavy, it takes too much time to run.
The lighter AKY player is still not running.
