Problem 8-E2Consider the designof a RISC processor where only instructions LOAD and STORE access memory. Consider the following features:-Two-address instruction formatInstructions: LOAD, STORE, ADD, HALT-Registers: R0, R1, R2, R3-MemorySize: 2K words-Assume that Instruction LOAD uses either immediate ordirectaddressing modeto load aregister, instruction STORE uses direct addressing modeto store contentsof register into a memoryword, and instruction ADD usesregister addressingmodeto add contentsof one register to another register. a) Formulate an instruction format for this processor by identifying its fields, number of bits per field, an op code for each instruction, a binary code for each register, and a binary code for each addressing mode. Assume that each instruction is 16 bits long and unused bits are set to 0. b) Write an assembly language program to evaluateX