Sound Board
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Sound Board (サウンドボード) is the name NEC used for the sound cards it released for the PC-9800 series. These sound cards usually used one of three FM synthesizer Yamaha Sound chips; the YM2203, YM2608 or YMF297 (which was a combination of the previous YM2608 and a YMF288), and they were either part of an Expansion Board or built into the PC-9800 series models. The original PC-9801 did not have any sound except its Beeper that had a fixed pitch, but following its release, many official and third party sound boards were made.
List of Official Sound Boards
| Model Number | Sound Chip | Notes | Compatible Models |
|---|---|---|---|
| PC-9801-14 | TMS3631-R1104 | The first sound board officially released, it uses a PSG sound chip rather than an FM and is the only one that doesnt use a Yamaha sound chip | |
| PC-9801-26 | YM2203 | ||
| PC-9801-26K | YM2203 | ||
| PC-9801-73 | YM2608 | ||
| PC-9801-86 | YM2608 | ||
| PC-9801-118 | YMF297 |