Hello. This is my latest project - software PS/2 implementation for AVR and some practical example - simple piano on ATMega32. It has some nice features like "multi-tone" option (have you ever music in old DOS games? old, good times... ;-) ) and sample recording (4 samples). Let's play something. There are some small mistakes, because I'm holding the camera in the second hand ;-). I am going to share my PS/2 library written in C after fixing some bugs and writing the documentation on my website: http://silent.it.cx/home/ (Polish)