== Privilege Modes ==
The Motorola 68000 has two modes: Supervisor and User. These control what a program can do to keep the system safe and running smoothly.
In User mode, certain powerful commands like STOP, RESET, and status register changes are blocked. Debugging commands (MOVE to/from USP) are also limited to Supervisor mode. The processor uses two stack pointers: Supervisor Stack Pointer (SSP) for system tasks and User Stack Pointer (USP) for normal programs.