[daveguy]

Either you do not understand what assembly is, or you are being pedantic about the very thin abstraction between assembly and opcodes. Just in case you didn't know, assembly is a convenient way to read the binary opcodes that the cou uses to move data between registers and execute logic.

Yes, I should have said binary opcodes instead of assembly. I just assumed anyone discussing embedded systems would know they are practically interchangeable.

[ahazred8ta]

The other commenters are referring to bare metal interpreted Forth with no OS, or bare metal ROM Basic with no OS, as opposed to machine code with no OS.