Table 1 Instruction Register ALU Instruction class fetch read Data operation access Register | Total write time Load word (w) 200 ps 100 ps 200 ps 200 ps 100 ps 800 ps Store word (sw) 200 ps 100 ps 200 ps 200 ps 700 ps R-format (add, sub, AND, 200 ps 100 ps 200 ps 100 ps 600 ps OR, s1t) Branch (beq) 200 ps 100 ps 200 ps 500 ps