[J-core] What is the recomended binary header for compiler output?

[Daniel V]

If you have made a Compiler, what header would be best for programs?

Should I use the FDPIC ELF? Or is Shared FLAT sufficient?

And is there any file that documents the specific instructions the in
J2? Like a technical document for J2.

And is there any VM in c-code, that can be used to simulate the
instruction set, while developing the compiler on your own computer?
Or is I best to write it yourself?

// Daniel V.