In this video I explore the differences in sound between the original NES/Famicom and their clones. I also show a ROMhack I made to "fix" the duty cycle swap bug in Super Mario Bros.
Link to my ROMhack at ROMhacking.net:
https://www.romhacking.net/hacks/7712/
Check my project to document Brazilian games (bootleg or not): https://videogamebrasileiro.fandom.com/pt-br/wiki/Wiki_Videogame_Brasileiro
0:00 Intro: differences in the Overworld theme
1:31 How the NES sound works
4:48 Differences in hardware between the NES and its clones
6:52 Can the duty cycle bug be fixed?
7:43 Super Mario Bros. Duty Cycle Swap Edition
8:39 Conclusion
#supermariobros #famiclone #romhack
