EDWARD D-TECH - Yamaha Chips
BEFiS HOMEPAGE DAS [Digital Audio] Chip List
VORC - YAMAHA sound chips numerical classification
SoundProgramming.net - Sound Chips
Undocumented Sound Chips
TableHooters - electric instrument hacks & collection
Vintage Synth Explorer
nurykabe - Yamaha PSS List
Synth Zone
RE:birth
SPFM
MIDIBOX
ものおき
Digital Sound Antiques
シンセ・アンプラグド
MOCO for LUFA