It's nowhere near all the way down to the bottom of the stack*, but it is a lot closer... try out Nand2Tetris[1], where you start with a fairly low level constr

It's nowhere near all the way down to the bottom of the stack*, but it is a lot closer... try out Nand2Tetris[1], where you start with a fairly low level construct... the NAND logic gate, and work your way up to a CPU, Memory, and make a virtual PC, then write an assembler and programs for it. [1] https://www.nand2tetris.org/ https://www.nand2tetris.org/ * - Lower levels include transistor logic, analog electronics, electromagnetism, chemistry and the equilibrium equation (how transistors work), quantum mechanics (how atoms and chemistry works).