Are you maybe talking about bare metal here? I'm probably guilty of mixing up Linux and bare metal in this post here. If I recall correctly, ResetVector is relevant for ARM cores to find their first instruction. There's a similar concept on RISC-V, please check this out: popovicu.com/posts/risc-v-sb…

So it looks startup looks different for ARM and RISC-V - on RISC-V there is only _start defined in linker script, while in ARM it starts with ResetVector that calls _start eventually. (If I understood correctly)

A third option is to look at the EDK2 sources, ResetVector handling (and other Volume Top File stuff) are OSS: github.com/tianocore/edk2/bl…

I didnt know. Btw the cartridge port has no reset pin is it possible to reset by jumping to some resetvector?