baserom.z64, have no idea where that is or what it's talking. I tried setting up MSYS2 in the guide it linked to, got halfway through it and had no idea what it was talking about so I went back to the original guide, it's telling me to copy baserom for asset extraction at. Super Mario 64 is considered one of the most influential games of all time. Click on any of the link's below to be taken to the full. This page contains links to help you find every Power Star in every course for Super Mario 64.
In terms of SM64PC, the new firmware works better and performs better, from the quick tests I've done I haven't seen any framedrop, while the old fw did fall below 30fps sometimes on bo-omb field.
