FG's Modlists
You must dump it from your own legally acquired game cartridge. Search for “N64 ROM dumping” using a device like the Retrode or Sanni Cartridge Reader. No one can legally share the file itself.
It’s a byte-for-byte copy of the original US version 1.0 ROM of the game. The decompilation process uses it as a reference to extract assets, verify matching code, and regenerate a fully compilable ROM. baserom us z64
Decompliations don’t include copyrighted Nintendo code or assets. Instead, they provide a build system that expects you to supply your own baserom.us.z64 . The build script then splits it into object files and compares the compiled output against the original to ensure accuracy. You must dump it from your own legally
After building successfully, you can modify the source (C/assembly) and rebuild a new ROM — that’s how custom hacks like SM64 Star Road or OoT Missing Link are made. It’s a byte-for-byte copy of the original US version 1
If you’ve ever looked at the source code for a decompliation project like Super Mario 64 (sm64) or Ocarina of Time (oot), you’ve likely encountered the file baserom.us.z64 .