def jalr(code, computer):
regA = extract_binary(code, 19, 21)
regB = extract_binary(code, 16, 18)
next_instruction = computer.get_pc() + 1
computer.set_register(regB, next_instruction)
computer.set_pc(computer.get_register(regA))
def nand(code, computer):
destReg = extract_binary(code, 0, 2)
regA = extract_binary(code, 19, 21)
regB = extract_binary(code, 16, 18)
value = ~(computer.get_register(regA) & computer.get_register(regB))
computer.set_register(destReg, value)
computer.go_next_pc()
def add(code, computer):
regA = extract_binary(code, 19, 21)
regB = extract_binary(code, 16, 18)
destReg = extract_binary(code, 0, 2)
value = computer.get_register(regA) + computer.get_register(regB)
computer.set_register(destReg, value)
computer.go_next_pc()
def lw(code, computer):
regA = extract_binary(code, 19, 21)
regB = extract_binary(code, 16, 18)
offsetField = extract_binary(code, 0, 15, unsiged=False)
address = computer.get_register(regA) + offsetField
mem_value = computer.get_memory(address)
computer.set_register(regB, mem_value)
computer.go_next_pc()
def beq(code, computer):
regA = extract_binary(code, 19, 21)
regB = extract_binary(code, 16, 18)
offsetField = extract_binary(code, 0, 15, unsiged=False)
regA_value = computer.get_register(regA)
regB_value = computer.get_register(regB)
if regA_value == regB_value:
computer.set_pc(computer.get_pc() + 1 + offsetField)
else:
computer.go_next_pc()