Chapter 01: The Game Boy Soundchip or what makes Chiptune Chiptune.
Unlike modern computers, that create sounds mostly via software, old times computers created sounds with dedicated chips. These chips can be seen as more or less sophisticated synthesizers inside in an integrated circuit (IC). The best known one chip synthesizer is for sure the SID chip that came with the Commodore 64 and is very wide spread in pop music today by the likes as Timbaland, Zombie Nation, Welle:Erdball and many others. Just as the C64, the original Game Boy features a sound chip as well. But hey, the Game Boy would never have been that affordable if Nintendo had not integrated all parts as much as possible. Therefore the sound chip is part of the main processor chip and you will never find the chip alone if you open up a Game Boy. The sound part of the Game Boy CPU is some times called PAPU (Pseudo Audio Processing Unit) and is very limited in it's possibilities compared to the SID. But that doesn't make it less interesting today, because limitation forces the creativity of musicians as well as programmers.
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