*[https://youtu.be/yadWu7hs4MU Oscilloscope comparison of 4 different SID chips]
*[https://youtu.be/fQU-WZZ67yM C64 SID vs Amiga Paula] [https://youtu.be/ioZRUVTKLx0 C64 SID vs Atari Pokey]
* [[Media:Mos 6581 sid.pdf|SID chip datasheet]] [https://www.waitingforfriday.com/?p=661 Web version]* [https://github.com/libsidplayfp/SID_schematics/wiki SID internals documentation]
*[https://www.oxyron.de/html/registers_sid.html Oxyron SID reference]
*[https://www.wothke.ch/tinyrsid/index.php webSID] Online SID chip emulator