Oohhh, nice!
Just curious but how did you dump those carts? Did you solder them or something? I know some months back I wished I could desolder plug'n'plays to dump but sadly cannot (especially dump and then put back together). Also, I'm not a programmer but I have been kinda obsessed with plug'n'play technology for a while now.
Additionally, is this VT168? The last screenshot with the drums or something reminds me of this, although someone told me it's Sunplus? I forget--maybe VT168 was made to compete with Sunplus:
https://www.youtube.com/watch?v=pt5Wl69uRZ4