| FM unique |
FM 2op./4op. |
FM 4op. with SSG/PCM | SSG | PCM | unidentified |
| YMF262-M (OPL3) | |||||
| YMF262-S (OPL3) | |||||
| YMZ263B-F (MMA) | |||||
| YMF264-F (OPNC) | |||||
| YMF268-F | |||||
| YMF271F (OPX) | |||||
| YMF274 (OPL3 compatible) | |||||
| YMF276-M (OPN2C) | |||||
| YMF278 (OPL4) | |||||
| YMF278B (OPL4) | |||||
| YMZ280B-F (PCMD8) | |||||
| YMF281B-D (OPLLP) | |||||
| YMF282 (OPL3 compatible) | |||||
| YMZ284-D/M (SSGL) | |||||
| YMZ285 | |||||
| YMF286-K (OPNB compatible?) | |||||
| YMF288-M (OPN3-L) | |||||
| YMF289B-F (OPL3-L) | |||||
| YMF289B-S (OPL3-L) | |||||
| YMF292 (SCSP) | |||||
| YMZ294 (SSG) | |||||
| YMF295 (OPL4-D) | |||||
| YMF297 (OPN3-L + OPL3) | |||||
* From early 1980s, Yamaha has developed sound related chips in four digit
numbers (YMxxxx). However, in early 1990s it seems to have reached the end of
numbers: YM9xxx. Maybe this is the reason Yamaha initialized their product as Y
+ two identifiers + three digits.
* At least in the range of 2xx, YMF
seems to mean FM, and YMZ seems to mean non-FM. However, I guess they were
developed in the same line because of the following reasons: 1) their numbers
are close but aren't overlapped. 2) They had been produced in close numbers also
in the days of YMxxxx. In any case I mixed them on this chart.
* An
obvious difference from YMxxxx numbers is that DAC and sound effect chips were
separated to other lines. And in YMF/YMZ range it's difficult to find
classifying policies of OPM/OPL/OPN etc. in certain range of numbers.
*
OPN compatibles have ended at 2xx range. But others continue to 7xx numbers.