GEP causing some wave channels to change duty cycles by TheUltimateKoopa at 10:03 AM EDT on September 10, 2017
I think that's the correct word for it.
In some games such as Donkey Kong Land, on the wave channel, the square wave will suddenly change from 50% to 25%. For example, in the "Mountain" theme at around 34.4 seconds.
https://drive.google.com/open?id=0B_G73t0I71FdYVRWdW9zZkV1OUE
by kode54 at 7:03 PM EDT on September 10, 2017
The Wave channel is not meant to be programmed while it is running, otherwise writes to the Wave RAM go to unpredictable locations.
by TheUltimateKoopa at 8:18 PM EDT on September 10, 2017
Are you saying that this (sort of) problem which only happens with GEP, is unavoidable?
by kode54 at 8:26 PM EDT on September 10, 2017
I'm saying this sort of problem would happen on actual hardware. Have you verified or not?
by TheUltimateKoopa at 8:33 PM EDT on September 10, 2017
I don't have a Game Boy to test it on.
All I know is that every single version of that song (Construction Site/Building/whatever), the wave channel is always a square wave.

Maybe someone has uploaded a "directly recorded from a Game Boy" soundtrack on Final Fantasy Shrine, I could compare it with.


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