This zip file includes the HEX file and C source code for the Automatic 
TOSLink switcher project. The HEX file can be loaded into the ATTiny13 using 
an Atmel programmer and appropriate software (avrdude, AVRStudio, etc). You 
will also need to program the chip's fuses so that it runs at 9.6MHz (by 
default it runs at 1/8th that speed using an internal divider).

The C source code can be compiled in Windows, using AVRStudio with avr-gcc
or WinAVR, or in Linux using avr-gcc.
