Yamaha YM2154

The Yamaha YM2154, also known as RYP4 (Rhythm Processor), is an audio microchip that was produced by the Yamaha Corporation. It been used for keyboards and drum machines. It has twelve individual samples and also an ADPCM Rompler and a ten channel Analog-to-digital converter.[1]

Products

The chip was used in (1985) for the Porta Tone PSR-60, PSR-70[1] and PSR-80.[2] It was also used in the RX-11 and RX-15 drum machines.[3]

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gollark: Or something something nontrivial zeroes of the Riemann zeta function.
gollark: Chemistry/physics/maths/CS etc. are even more broadly defined and complex though, bad examples.
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References
  1. "Undocumented Sound Chips 2154". Retrieved 20 August 2015.
  2. "EEVblog #256 – Yamaha PSR-80 Keyboard Teardown". EEVBlog. Retrieved 26 February 2014.
  3. "uts". rx15. kyouichisato.blogspot.co.uk. Retrieved 20 August 2015.


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