So I broke my final fantasy VII disk 1

[Smeep]

Yay me. I was playing final fantasy VII, got to the part at disk two where they attempt to blast weapon with the cannons, and it freezes just after the part where the siren resounds.

So, I downloaded the rom, and after much trouble, got it working. However, the ingame battle menu is blank.

Does anyone else have this problem with the ROM?

I think I'm just going to end up buying a new one eventually, but it'd be nice to have some FF to get me through these tough times.

EDIT: Please ignore topic title, it is disk TWO that is broken.