It's the noise channel. I described it in a different thread where we were apparently discussing the same thing: postthefox wrote:How hard did you look? I get buzzing in the logo in FCEUX (quite loud) and Nintendulator (faint).zeroone wrote:Unfortunately, I cannot find a buzzing emulator out there except for mine. I may just be doing something else wrong in my square wave generator.
BTW, I don't think it's related to the Dizzy "problem".
Discuss technical or other issues relating to programming the Nintendo Entertainment System, Famicom, or compatible systems.