0 3 4 Opcode Address (a) Instruction format 0 1 15 Magnitude (b) Integer format Program counter (PC) = Address of instruction Instruction register (IR) = Instruction being executed Accumulator (AC) = Temporary storage (c) Internal CPU registers 1. {100 points} Example of programs execution: (a) (20 points} Define your own UNIQUE and ORIGINAL hypothetical machine by fixing the hexadecimal code for at least 3 instructions; one of them MUST be a "return (or "exit) instruction, which is the last intruction of every program (b) {20 points} Draw yor own UNIQUE and ORIGINAL picture of the MM storing 2 processes, P, and P; (c) {60 points} Simulate the concurrent execution of the 2 processes by showing the relevant portion of memory's cells, and registers' contents and control stack (back-up memory) at every steps of the fetch-execute cycle 1 0 3 4 Opcode Address (a) Instruction format 0 1 15 Magnitude (b) Integer format Program counter (PC) = Address of instruction Instruction register (IR) = Instruction being executed Accumulator (AC) = Temporary storage (c) Internal CPU registers 1. {100 points} Example of programs execution: (a) (20 points} Define your own UNIQUE and ORIGINAL hypothetical machine by fixing the hexadecimal code for at least 3 instructions; one of them MUST be a "return (or "exit) instruction, which is the last intruction of every program (b) {20 points} Draw yor own UNIQUE and ORIGINAL picture of the MM storing 2 processes, P, and P; (c) {60 points} Simulate the concurrent execution of the 2 processes by showing the relevant portion of memory's cells, and registers' contents and control stack (back-up memory) at every steps of the fetch-execute cycle 1