Pokey Explorer v1.1 release

[ivop]

I think I would do several 8-bit sweeps. 16-bit with $011b, or $1b01, won't work. So, I would set AUDF3 to $1B, sweep AUDF1. Increase AUDF3 by 31, sweep AUDF1 again, untill AUDF3 overflows. If you don't want to manually increment AUDF3, you can modify the batch version to do all eight sweeps one after another.

 

Edit: perhaps later, I'll see to implementing "double" 8-bit and reverse double 8-bit, where the LSB and MSB are treated as separate sweeps. If the LSB overflows or reaches its end, it resets and the MSB is increased by its increment value untill that one also reaches its end or overflows.

Edited February 10, 2021 by ivop
typo

[Synthpopalooza]

Yes, that was what I had in mind, doing a set of 8 sweeps using the mod 31 increment each time.  One note:  As AUDF3 gets lower, so does the volume.  I think I can use this to introduce echo delay effects.

 

The rest of this setting (non mod 31) I have already pretty much documented.  It does a lot of swirling guitar sounds that are very Yamaha sounding.

[Synthpopalooza]

 

This piece uses the mode I mentioned above.  I will post up the xex on my POKEY thread tomorrow.  By varying the frequency on third channel, an echo fx is created.