Hello everybody,
This is my first post. I am the webmaster of woolyss.com ; a website dedicated to audio tracking, chiptune, chipmusic and 8-bit sound for all musicians. Most of softwares are free. I am a member of 8bc.org and chipmusic.org too.
I can help you. Check the page of 8-bit samples and download free packs.
http://woolyss.com/chipmusic-samples.php
Or use VST plugins
http://woolyss.com/chipmusic-plugins.php?s=drum
I hope, it will be helpful !
Cheers,