SID (SID.h)

MOS 6581 SID Emulator Arduino Library https://code.google.com/p/sid-arduino-lib/ -- This Arduino library emulates the SID sound chip of the famous Commodore 64 home computer. It is based on the Atmega8 MOS6581 SID Emulator by Christoph Haberer, but replaces the DSS tables with online functions to save memory and allow its use as a library. Unlike the original emulator, this library does not require any additional wiring. The sound is output through the digital Pin 9 of the Arduino board. A speaker can be directly connected between ground and this pin but the best results are obtained if a simple low-pass filter and an amplifier are used.