class CPUTests(unittest.TestCase):
def setUp(self):
self.cpu = CPU("tkinter")
def test_00E0(self):
self.cpu.opcode = 0x00e0
self.cpu.gpu.memory[0][0] = 1
self.cpu.execute_opcode()
self.assertEqual(self.cpu.gpu.memory[0][0], 0)
def test_00EE(self):
self.cpu.stack.append(0x1234)
self.cpu._00EE()
self.assertEqual(self.cpu.pc, 0x1234)
def test_1NNN(self):
self.cpu.opcode = 0x1234
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x234)
def test_2NNN(self):
self.cpu.opcode = 0x22d4
self.cpu.execute_opcode()
self.assertEqual(self.cpu.stack.pop(), 0x200)
self.assertEqual(self.cpu.pc, 0x02d4)
def test_3XNN_1(self):
self.cpu.pc = 0x0
self.cpu.registers[0x2] = 0x34
self.cpu.opcode = 0x3234
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x2)
def test_3XNN_2(self):
self.cpu.pc = 0x0
self.cpu.registers[0x2] = 0x35
self.cpu.opcode = 0x3234
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x0)
def test_4XNN_1(self):
self.cpu.pc = 0x0
self.cpu.registers[0x2] = 0x34
self.cpu.opcode = 0x4234
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x0)
def test_4XNN_2(self):
self.cpu.pc = 0x0
self.cpu.registers[0x2] = 0x35
self.cpu.opcode = 0x4234
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x2)
def test_5XY0_1(self):
self.cpu.pc = 0x0
self.cpu.registers[0x2] = 0x4
self.cpu.registers[0x3] = 0x4
self.cpu.opcode = 0x5230
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x2)
def test_5XY0_2(self):
self.cpu.pc = 0x0
self.cpu.registers[0x2] = 0x4
self.cpu.registers[0x3] = 0x5
self.cpu.opcode = 0x5230
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x0)
def test_6XNN(self):
self.cpu.opcode = 0x6a02
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0xa], 0x02)
def test_7XNN(self):
self.cpu.registers[0x1] = 0x1f
self.cpu.opcode = 0x71ff
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x1], 0x1e)
def test_8XY0(self):
self.cpu.registers[0x2] = 0x2
self.cpu.registers[0x3] = 0x3
self.cpu.opcode = 0x8230
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x3)
def test_8XY1(self):
self.cpu.registers[0x2] = 0x2200
self.cpu.registers[0x3] = 0x0033
self.cpu.opcode = 0x8231
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x2233)
def test_8XY2(self):
self.cpu.registers[0x2] = 0x2200
self.cpu.registers[0x3] = 0x0033
self.cpu.opcode = 0x8232
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x0)
def test_8XY3(self):
self.cpu.registers[0x2] = 0x3
self.cpu.registers[0x3] = 0x5
self.cpu.opcode = 0x8233
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x6)
def test_8XY4_1(self):
self.cpu.registers[0x2] = 0x22
self.cpu.registers[0x3] = 0x33
self.cpu.opcode = 0x8234
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x55)
self.assertEqual(self.cpu.registers[0xf], 0x0)
def test_8XY4_2(self):
self.cpu.registers[0x2] = 0xff
self.cpu.registers[0x3] = 0xff
self.cpu.opcode = 0x8234
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0xfe)
self.assertEqual(self.cpu.registers[0xf], 0x1)
def test_8XY5_1(self):
self.cpu.registers[0x2] = 0xff
self.cpu.registers[0x3] = 0xff
self.cpu.opcode = 0x8235
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x0)
self.assertEqual(self.cpu.registers[0xf], 0x0)
def test_8XY5_2(self):
self.cpu.registers[0x2] = 0xff
self.cpu.registers[0x3] = 0xfe
self.cpu.opcode = 0x8235
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x1)
self.assertEqual(self.cpu.registers[0xf], 0x1)
def test_8XY6_1(self):
self.cpu.registers[0x2] = 0x4
self.cpu.opcode = 0x8236
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x2)
self.assertEqual(self.cpu.registers[0xf], 0x0)
def test_8XY6_2(self):
self.cpu.registers[0x2] = 0x3
self.cpu.opcode = 0x8236
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x1)
self.assertEqual(self.cpu.registers[0xf], 0x1)
def test_8XY7_1(self):
self.cpu.registers[0x2] = 0xfe
self.cpu.registers[0x3] = 0xff
self.cpu.opcode = 0x8237
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x1)
self.assertEqual(self.cpu.registers[0xf], 0x1)
def test_8XY7_2(self):
self.cpu.registers[0x2] = 0xff
self.cpu.registers[0x3] = 0xff
self.cpu.opcode = 0x8237
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x0)
self.assertEqual(self.cpu.registers[0xf], 0x0)
def test_8XYE_1(self):
self.cpu.registers[0x2] = 0x2
self.cpu.opcode = 0x823e
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x4)
self.assertEqual(self.cpu.registers[0xf], 0x0)
def test_8XYE_2(self):
self.cpu.registers[0x2] = 0x3
self.cpu.opcode = 0x823e
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x6)
self.assertEqual(self.cpu.registers[0xf], 0x1)
def test_9XY0_1(self):
self.cpu.registers[0x2] = 0x2
self.cpu.registers[0x3] = 0x2
self.cpu.pc = 0
self.cpu.opcode = 0x9230
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0)
def test_9XY0_2(self):
self.cpu.registers[0x2] = 0x2
self.cpu.registers[0x3] = 0x3
self.cpu.pc = 0
self.cpu.opcode = 0x9230
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 2)
def test_ANNN(self):
self.cpu.opcode = 0xa2ea
self.cpu.execute_opcode()
self.assertEqual(self.cpu.ir, 0x02ea)
def test_BNNN(self):
self.cpu.registers[0x0] = 2
self.cpu.pc = 3
self.cpu.opcode = 0xb004
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x6)
def test_DXYN_1(self):
self.cpu.ir = 0
self.cpu.memory[0x0] = 0xff
self.cpu.registers[0x5] = 0x5
self.cpu.registers[0x6] = 0x5
self.cpu.opcode = 0xd561
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0xf], 0x0)
def test_DXYN_2(self):
self.cpu.ir = 0
self.cpu.memory[0x0] = 0xff
self.cpu.registers[0x5] = 0x5
self.cpu.registers[0x6] = 0x5
self.cpu.opcode = 0xd561
self.cpu.execute_opcode()
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0xf], 0x1)
def test_DXYN_3(self):
self.cpu.ir = 0
self.cpu.memory[0x0] = 0x0
self.cpu.registers[0x5] = 0x5
self.cpu.registers[0x6] = 0x5
self.cpu.opcode = 0xd561
self.cpu.execute_opcode()
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0xf], 0x0)
def test_EX9E_1(self):
self.cpu.key_state[0x2] = True
self.cpu.pc = 0
self.cpu.registers[0x3] = 0x2
self.cpu.opcode = 0xe39e
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x2)
def test_EX9E_2(self):
self.cpu.key_state[0x2] = False
self.cpu.pc = 0
self.cpu.registers[0x3] = 0x2
self.cpu.opcode = 0xe39e
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x0)
def test_EXA1_1(self):
self.cpu.key_state[0x2] = False
self.cpu.pc = 0
self.cpu.registers[0x3] = 0x2
self.cpu.opcode = 0xe3a1
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x2)
def test_EXA1_2(self):
self.cpu.key_state[0x2] = True
self.cpu.pc = 0
self.cpu.registers[0x3] = 0x2
self.cpu.opcode = 0xe3a1
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x0)
def test_FX07(self):
self.cpu.delay_timer = 0x5
self.cpu.registers[0x2] = 0x0
self.cpu.opcode = 0xf207
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x5)
def test_FX0A(self):
self.cpu.registers[0x2] = 0x5
self.cpu.pc = 0x2
self.cpu.opcode = 0xf20a
self.cpu.execute_opcode()
self.assertEqual(self.cpu.pc, 0x0)
self.cpu.key_state[0x8] = True
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x2], 0x8)
def test_FX15(self):
self.cpu.delay_timer = 0x5
self.cpu.registers[0x2] = 0x7
self.cpu.opcode = 0xf215
self.cpu.execute_opcode()
self.assertEqual(self.cpu.delay_timer, 0x7)
def test_FX18(self):
self.cpu.registers[0x2] = 0x5
self.cpu.sound_timer = 0x2
self.cpu.opcode = 0xf218
self.cpu.execute_opcode()
self.assertEqual(self.cpu.sound_timer, 0x5)
def test_FX1E(self):
self.cpu.ir = 0x5
self.cpu.registers[0x2] = 0x4
self.cpu.opcode = 0xf21e
self.cpu.execute_opcode()
self.assertEqual(self.cpu.ir, 0x9)
def test_FX29(self):
self.cpu.ir = 0x1234
self.cpu.registers[0x2] = 0x4
self.cpu.opcode = 0xf229
self.cpu.execute_opcode()
self.assertEqual(self.cpu.ir, 20)
def test_FX33(self):
self.cpu.registers[0x2] = 456
self.cpu.ir = 0
self.cpu.opcode = 0xf233
self.cpu.execute_opcode()
self.assertEqual(self.cpu.memory[0], 4)
self.assertEqual(self.cpu.memory[1], 5)
self.assertEqual(self.cpu.memory[2], 6)
def test_FX55(self):
self.cpu.registers[0x0] = 4
self.cpu.registers[0x1] = 3
self.cpu.registers[0x2] = 1
self.cpu.registers[0x3] = 8
self.cpu.ir = 0
self.cpu.opcode = 0xf355
self.cpu.execute_opcode()
self.assertEqual(self.cpu.memory[0], 4)
self.assertEqual(self.cpu.memory[1], 3)
self.assertEqual(self.cpu.memory[2], 1)
self.assertEqual(self.cpu.memory[3], 8)
def test_FX65(self):
self.cpu.memory[0] = 6
self.cpu.memory[1] = 2
self.cpu.memory[2] = 1
self.cpu.memory[3] = 7
self.cpu.memory[4] = 0
self.cpu.ir = 0
self.cpu.opcode = 0xf465
self.cpu.execute_opcode()
self.assertEqual(self.cpu.registers[0x0], 6)
self.assertEqual(self.cpu.registers[0x1], 2)
self.assertEqual(self.cpu.registers[0x2], 1)
self.assertEqual(self.cpu.registers[0x3], 7)
self.assertEqual(self.cpu.registers[0x4], 0)
def test_get_opcode(self):
self.cpu.pc = 0x0
self.cpu.memory[0x0] = 0x12
self.cpu.memory[0x1] = 0x34
self.cpu.get_opcode()
self.assertEqual(self.cpu.opcode, 0x1234)
