= Operating Systems = The primary 'program' running on a machine that allows a user to run several programs at once, manages drivers and hardware abstraction, etc also see [[kernel]] == CPUs == * [[RISC]] * [[x86]] * [[ARM]] == Assembly == * [[../lang/x86]] == Concepts == * [[scheduler]] * [[microkernel]] * [[monolithic_kernel]] * [[system_calls]] == Tools == * [[qemu]] * [[cross_toolchain|Cross compiler toolchain]] [[index]]