http://www.callanbrown.com/index.php?option=com_content&view=article&id=74:castlevania-iii-with-full-famicom-sound&catid=36:home-console-projects&Itemid=61
This is exactly what I did to my Famicom -> NES converter cart.
Might be a good modification for the PowerPak too.
This is exactly what I did to my Famicom -> NES converter cart.
Might be a good modification for the PowerPak too.