When trying to dump a newer Sup 400-in-1 ROM on my Raspberry Pi based dumper, the thing doesn't load well in the emulator. There are many corruptions in the ROM when viewed through the YY-CHR app. The little dots at the empty area are those corruptions:

Plus, this thing takes a whole day to dump and it's really slow, and I have a better idea to port this whole thing to a Raspberry Pico instead. After figuring out the newer problems such as the MCP23017s couldn't be detected and these corruptions, I had modifications to the circuit:

This time, it dumps really fast and about 35 mins later I get the 16 megabytes ROM dump. You can check this ROM dumper here too if you want a faster alternative!

However, when trying to run it in the EmuVT - it just gives me a black screen and it doesn't work! What gives?