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Fix relative branch displacement tests. Closes #57

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This commit is contained in:
Mike Naberezny 2019-09-05 09:28:17 -07:00
parent 4b67a3133f
commit a421a9c425
1 changed files with 16 additions and 16 deletions
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32
py65/tests/devices/test_mpu6502.py
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@ -1562,11 +1562,11 @@ class Common6502Tests:
mpu = self._make_mpu()
mpu.p &= ~(mpu.CARRY)
mpu.pc = 0x0050
rel = (0x06 ^ 0xFF + 1) # two's complement of 6
rel = (0x06 ^ 0xFF) + 1 # two's complement of 6
# $0000 BCC -6
self._write(mpu.memory, 0x0050, (0x90, rel))
mpu.step()
self.assertEqual(0x0052 + rel, mpu.pc)
self.assertEqual(0x0052 - 0x06, mpu.pc)
def test_bcc_carry_set_does_not_branch(self):
mpu = self._make_mpu()
@ -1590,11 +1590,11 @@ class Common6502Tests:
mpu = self._make_mpu()
mpu.p |= mpu.CARRY
mpu.pc = 0x0050
rel = (0x06 ^ 0xFF + 1) # two's complement of 6
rel = (0x06 ^ 0xFF) + 1 # two's complement of 6
# $0000 BCS -6
self._write(mpu.memory, 0x0050, (0xB0, rel))
mpu.step()
self.assertEqual(0x0052 + rel, mpu.pc)
self.assertEqual(0x0052 - 0x06, mpu.pc)
def test_bcs_carry_clear_does_not_branch(self):
mpu = self._make_mpu()
@ -1618,11 +1618,11 @@ class Common6502Tests:
mpu = self._make_mpu()
mpu.p |= mpu.ZERO
mpu.pc = 0x0050
rel = (0x06 ^ 0xFF + 1) # two's complement of 6
rel = (0x06 ^ 0xFF) + 1 # two's complement of 6
# $0000 BEQ -6
self._write(mpu.memory, 0x0050, (0xF0, rel))
mpu.step()
self.assertEqual(0x0052 + rel, mpu.pc)
self.assertEqual(0x0052 - 0x06, mpu.pc)
def test_beq_zero_clear_does_not_branch(self):
mpu = self._make_mpu()
@ -1817,10 +1817,10 @@ class Common6502Tests:
mpu.p |= mpu.NEGATIVE
mpu.pc = 0x0050
# $0000 BMI -6
rel = (0x06 ^ 0xFF + 1) # two's complement of 6
rel = (0x06 ^ 0xFF) + 1 # two's complement of 6
self._write(mpu.memory, 0x0050, (0x30, rel))
mpu.step()
self.assertEqual(0x0052 + rel, mpu.pc)
self.assertEqual(0x0052 - 0x06, mpu.pc)
def test_bmi_negative_clear_does_not_branch(self):
mpu = self._make_mpu()
@ -1845,10 +1845,10 @@ class Common6502Tests:
mpu.p &= ~(mpu.ZERO)
mpu.pc = 0x0050
# $0050 BNE -6
rel = (0x06 ^ 0xFF + 1) # two's complement of 6
rel = (0x06 ^ 0xFF) + 1 # two's complement of 6
self._write(mpu.memory, 0x0050, (0xD0, rel))
mpu.step()
self.assertEqual(0x0052 + rel, mpu.pc)
self.assertEqual(0x0052 - 0x06, mpu.pc)
def test_bne_zero_set_does_not_branch(self):
mpu = self._make_mpu()
@ -1873,10 +1873,10 @@ class Common6502Tests:
mpu.p &= ~(mpu.NEGATIVE)
mpu.pc = 0x0050
# $0050 BPL -6
rel = (0x06 ^ 0xFF + 1) # two's complement of 6
rel = (0x06 ^ 0xFF) + 1 # two's complement of 6
self._write(mpu.memory, 0x0050, (0x10, rel))
mpu.step()
self.assertEqual(0x0052 + rel, mpu.pc)
self.assertEqual(0x0052 - 0x06, mpu.pc)
def test_bpl_negative_set_does_not_branch(self):
mpu = self._make_mpu()
@ -1919,11 +1919,11 @@ class Common6502Tests:
mpu = self._make_mpu()
mpu.p &= ~(mpu.OVERFLOW)
mpu.pc = 0x0050
rel = (0x06 ^ 0xFF + 1) # two's complement of 6
rel = (0x06 ^ 0xFF) + 1 # two's complement of 6
# $0050 BVC -6
self._write(mpu.memory, 0x0050, (0x50, rel))
mpu.step()
self.assertEqual(0x0052 + rel, mpu.pc)
self.assertEqual(0x0052 - 0x06, mpu.pc)
def test_bvc_overflow_set_does_not_branch(self):
mpu = self._make_mpu()
@ -1947,11 +1947,11 @@ class Common6502Tests:
mpu = self._make_mpu()
mpu.p |= mpu.OVERFLOW
mpu.pc = 0x0050
rel = (0x06 ^ 0xFF + 1) # two's complement of 6
rel = (0x06 ^ 0xFF) + 1 # two's complement of 6
# $0050 BVS -6
self._write(mpu.memory, 0x0050, (0x70, rel))
mpu.step()
self.assertEqual(0x0052 + rel, mpu.pc)
self.assertEqual(0x0052 - 0x06, mpu.pc)
def test_bvs_overflow_clear_does_not_branch(self):
mpu = self._make_mpu()