Please help!

Design an instruction set of a 16-bit CPU that has only 16 instructions. Consider different kinds of instructions. Make and state any necessary assumptions. Explain all the design decisions. In addition to everything you would like to include in the report, please make sure to include list of registers, instruction formats, explanation on why you have selected certain instructions and which registers an instruction use, etc. Following are some key points that could be followed when working on the project. Decide how many user-accessible registers the CPU is going to have. Decide which instructions the CPU is going to have. Decide how each of the instructions is encoded into machine code