def testMOVM(self, chip):
sources = "BCDEHLMA"
for i, src in enumerate(sources):
chip.reset()
chip.memory[0] = 0x70 + i
if src == "M":
self.testHLT(chip)
else:
chip.registers["H"], chip.registers["L"], chip.registers[src] = 0x00, 0x01, 0x11
address = Chip8080.make16bitWord(chip.registers["H"], chip.registers["L"])
chip.runCode(chip.memory[0])
assert chip.memory[address] == 0x11, "Memory write failed"
def testINX(self, chip):
opCodes = {
"B" : 0x03,
"D" : 0x13,
"H" : 0x23
}
for reg in opCodes:
chip.reset()
chip.memory[0] = opCodes[reg]
chip.registers[reg] = 0x00
chip.registers[chip.pairs[reg]] = 0x01
initial = Chip8080.make16bitWord(chip.registers[reg], chip.registers[chip.pairs[reg]])
chip.runCode(chip.memory[0])
final = Chip8080.make16bitWord(chip.registers[reg], chip.registers[chip.pairs[reg]])
assert final == (initial + 1) % 0x10000, "Increment failed."
assert not chip.carry, "Carry flag should be zero"
assert not chip.sign, "Sign flag should be zero"
assert not chip.zero, "Zero flag should be zero"
assert not chip.aux_carry, "AuxCarry flag should be zero"
assert not chip.parity, "Parity flag should be zero"
def testMOV(self, chip, dst, firstcode):
sources = "BCDEHLMA"
for i, src in enumerate(sources):
chip.reset()
opcode = firstcode + i
chip.memory[0] = opcode
if src == "M":
chip.registers["H"], chip.registers["L"] = 0x00, 0x01
address = Chip8080.make16bitWord(chip.registers["H"], chip.registers["L"])
chip.memory[1] = 0x11
value = chip.memory[address]
else:
chip.registers[src] = 0x11
value = chip.registers[src]
chip.runCode(chip.memory[0])
assert chip.registers[dst] == value, "value not moved from " + src + " to " + dst +"correctly".format(src,dst)
def testSTAX(self, chip):
opCodes = {
"B" : 0x02,
"D" : 0x12,
}
for reg in opCodes:
chip.reset()
chip.memory[0] = opCodes[reg]
chip.registers["A"] = 0x55
chip.registers[reg] = 0x01
chip.registers[chip.pairs[reg]] = 0x00
address = Chip8080.make16bitWord(chip.registers[reg], chip.registers[chip.pairs[reg]])
chip.runCode(chip.memory[0])
assert not chip.carry, "Carry flag should be zero"
assert not chip.sign, "Sign flag should be zero"
assert not chip.zero, "Zero flag should be zero"
assert not chip.aux_carry, "AuxCarry flag should be zero"
assert not chip.parity, "Parity flag should be zero"
assert chip.memory[address] == chip.registers["A"], "Memory not written correctly"