Design instructions set for a CPU

Design 13-bit instructions set for a CPU which operates on 16-bit signed numbers. Design a computer system which will be able to process: -Arithmetic operations: Addition, Subtraction, Multiplication (on data which might be on registers or main memory) -Logical operations: You will need to decide which logical operations you will need. -Branch operations: You will need to decide which branch operations you will need. -And any other need operations. You must include following points: -Width of instructions (given in project name) -Word size -Bus width -List of registers in CPU (user-accessible and inaccessible) and their sizes -Instruction formats: structure of instruction, explanation why you have selected certain instructions and which registers can be used with that instruction. -Binary code for each opcode. -Which addressing modes will be supported -Which flags will be included -A sample program