2. For each of the following E15 instructions, provide a one-sentence English description of what it does. Include in your description any effect on the value of registers, including the zero flags and the program counter.

(a) {mov, Rg3, Rg1, 4'b0000}

(b) {addi, RXX, Rg2, 4'b0101}

(c) {cmp, Rg1, Rg3, 4'b0000}

(d) {jz, RXX, RXX, 4'b0011}