- Clock circuits
- Audio circuits
- Video circuits
Clock circuits
Famicom/famiclones with chips:
Nes-on-chip famiclones with external RAM memories:
Nes-on-chip famiclones:

Audio circuits
Famicom/famiclones with chips:
IQ502 rev 2:
NES-on-chip famiclones without audio expansion
NES-on-chip famiclones with audio expansion
NES-on-chip famiclones, best dynamic and no noise
Video circuits
Famicom/famiclones with chips:
IQ502 rev 2: