[[SymbOS]] makes use of:
*the graphics cards based on the Yamaha V9990 graphics chip [[Media:Yamaha v9990 datasheet.pdf|V9990 Datasheet]] [[Media:Yamaha v9990.pdf|V9990 Application Manual]]
*the soundcards based on the Yamaha OPL4 sound chip [[Media:Yamaha opl4 datasheet.pdf|OPL4 Datasheet]] [[Media:Yamaha opl4.pdf|OPL4 Application Manual]] [[Media:Yrw801.pdf|YRW801 General MIDI Datasheet]]. You can think of the OPL4 chip as an OPL3 and a Gravis Ultrasound ducktaped together
*the MP3 hardware player soundcards