Yamaha YM2413

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The YM2413, a.k.a. OPLL, is a cost-reduced FM synthesis sound chip manufactured by Yamaha Corporation and based on their YM3812 (OPL2).

Contents

Yamaha YM2413 YM2413 01.jpg
Yamaha YM2413

To make the chip cheaper to manufacture, many of the internal registers were removed. The result of this is that the YM2413 can only play one user-defined instrument at a time; the other 15 instrument settings are hard-coded and cannot be altered by the user. There were also some other cost-cutting modifications: the number of waveforms was reduced to two, additive mode was removed along with the 6-bit carrier volume control (channels instead have 15 levels of volume), and the channels are not mixed using an adder; instead, the chip's built-in DAC uses time-division multiplexing to play short segments of each channel in sequence, which was also done in the YM2612 much later.

Applications

The YM2413 was used in:

Variants and clones

See also

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References

  1. MSX-MUSIC
  2. "Japanese teletext receivers".[ permanent dead link ]
  3. "Family Noraebang (패밀리 노래방) - NESdev BBS".