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Old 26 May 2016, 21:01   #34
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Join Date: Jun 2006
Location: Gargore
Age: 38
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The 2600 used the TIA chip for sound. GCC originally planned to develop a new sound chip ("Gumby") for the 7800, but unfortunately, it was omitted from the final design. The 7800 already included a TIA for backward compatibility with the 2600, so they stuck with the TIA for sound, but they added an audio pin to the cartridge slot so that games which needed better sound could include their own sound chips in the cartridge. Ballblazer and Commando were the only games (released by Atari) which took advantage of this, and both used POKEY chips.
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