Difference between revisions of "How to access the PSG via PPI"
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Revision as of 05:01, 3 January 2007
Programmable Sound Generator
The CPC uses the AY-3-8912 PSG. This chip features 3 square-waves channels, a noise generator and an enveloppe generator often used at high frequencies to make different sounds.
The same chip is used in the ZX Spectrum, the Atari ST, and some others.
