SID
MOS Technology 6581/8580 SID (Sound Interface Device) as used in the Commodore 64
MIDIbox Hardware Platform, SID Module - DIY MIDI synth using SID chip (146 visits)
http://www.ucapps.de/mbhp_sid.html
Prophet 64 Cartridge edition - The Prophet64 is a plug and play hardware cartridge for the Commodore 64.
It contains four different applications providing the 21 century musician an easy and cheap way of integrating the C64 platform and it's legendary audio circuit (the "SID") into the modern studio. (89 visits)
http://www.prophet64.com/cartinfo.html