Yamaha ADPCM

From MultimediaWiki
Revision as of 17:55, 11 October 2018 by Lord Nightmare (talk | contribs) (add note about AICA)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

A variant of this codec is used by several Yamaha chips:

  • Y8950(MSX-SOUND)
  • YM2608(OPNA) [the external ADPCM channel only]

and may also be used on the following chips:

  • YM2610(OPNB) [the external ADPCM_B channel only?]
  • YMZ263B(MMA)
  • YMZ280B(PCMD8)

A (possibly slightly changed) variant is used on the sound chip of Sega Dreamcast and NAOMI:

  • Yamaha AICA Super Intelligent Sound Processor

The exact codec was also used by Yamaha SMAF MA-2 and onward):

  • MA-2 (YMU759)
  • MA-3 (YMU762)
  • MA-5 (YMU765)
  • MA-7 (YMU786)

The functionality of this codec is explained fairly extensively in two datasheets: