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...docs a little while ago; it's the main processor, which is a VC4 core. It's a rather elegant thing with two cores, 32 registers, a built-in DSP and an extremely nice instruction set; reverse engineered docs (based on publically available information) are available here: https://github.com/hermanhermitage/videocoreiv Right now the backend is incomplete but generates decent code for those things it does --- 32 bit integer and float, most ALU operations, some memory operations. It doesn't know about instruction displacements yet so the generated code probably won't assemble, and it doesn'...