Hi Sarah,
I'm trying to get ZetaWing to run from a cartrdige but so far without any luck :( I've built this cartridge (https://github.com/msolajic/c64-uni-cart) and flashed the 64kb ZetaWing v1.2.1.crt file to a Winbond W27C512 EPROM using my MiniPro. I think I've set the correct jumpers on the cartridge but maybe I'm missing something. I've configured my cart as follows:
28PIN/32PIN: 28PIN
SIZE: 8K
MODE: OCEAN
But when I insert the cartridge and turn on my C64 I just get the C64 Basic prompt.