The YM_MINI Synthesizer Kit is pretty nice kit, which was created by Wil Lindsay (a.k.a. Wait for VBLANK) and he has plenty of resources on his website straytechnologies.
The YM_MINI Synthesizer Kit is pretty nice kit, which was created by Wil Lindsay (a.k.a. Wait for VBLANK) and he has plenty of resources on his website straytechnologies.