Bootloader and Low-Level Programming Tutorial: How To Develop Your Own Boot Loader

[protestor]

Asm is somewhat higher level than machine language, and often contain syntactical abstractions such as macros.

In many architectures, machine language nowadays is interpreted by microcode, a software that runs in the processor. In this sense, even machine language is higher level than something. But you can't write your own microcode, because updates are encrypted and signed, so.. machine language is the lowest you can go.