Learning the Apple II as a Path to Bare Metal Programming

There are plenty of books out there one I would recommend highly is a book called Assembly Lines by Roger Wagner. If what you've read intrigues you then pull up an Apple II emulator or the real thing and see what's going on. The end result is not for you to make a brand new Apple II video game you could if you want they there's still a market for them. There is very little difference fundamentally from how an Apple II a 1977 computer versus a modern computer yeah there's more stuff on it like memory protection multi-CPUs and protected IO ports but still fundamentally same thing a processor registers a stack memory IO registers and a memory map and firmware those exist in modern computers they