as it is for open-source easy it should for the less provide link for documentation for operations on proc that it should offer that it don't give as it is tagged "hard"
...arduino is for beginners and for open-source
it should have the documents to everything sold with the name "arduino"
it should give programming interfaces and macro for asm on proc of all arduino boards too
i wrote that it should give links to the documents as they exist somewheresomeone wanting to do asm can manage using tools anyway
i found no complete opcodes map for avr
complete opcodes map