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Added tests to assert RMBx instructions do not change SR.

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This commit is contained in:
Mike Naberezny 2009-04-12 15:52:17 -07:00
parent ba3b42849a
commit cba7990d29
1 changed files with 72 additions and 0 deletions
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72
src/py65/tests/devices/test_mpu65c02.py
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@ -355,6 +355,15 @@ class MPUTests(unittest.TestCase, Common6502Tests):
expected = int('11111110', 2)
self.assertEquals(expected, mpu.memory[0x0043])
def test_rmb0_does_not_affect_status_register(self):
mpu = self._make_mpu()
mpu.memory[0x0043] = int('11111111',2)
self._write(mpu.memory, 0x0000, (0x07, 0x43)) #=> RMB0 $43
expected = int('01010101', 2)
mpu.flags = expected
mpu.step()
self.assertEquals(expected, mpu.flags)
# RMB1
def test_rmb1_clears_bit_1_without_affecting_other_bits(self):
@ -367,6 +376,15 @@ class MPUTests(unittest.TestCase, Common6502Tests):
expected = int('11111101', 2)
self.assertEquals(expected, mpu.memory[0x0043])
def test_rmb1_does_not_affect_status_register(self):
mpu = self._make_mpu()
mpu.memory[0x0043] = int('11111111',2)
self._write(mpu.memory, 0x0000, (0x17, 0x43)) #=> RMB1 $43
expected = int('01010101', 2)
mpu.flags = expected
mpu.step()
self.assertEquals(expected, mpu.flags)
# RMB2
def test_rmb2_clears_bit_2_without_affecting_other_bits(self):
@ -379,6 +397,15 @@ class MPUTests(unittest.TestCase, Common6502Tests):
expected = int('11111011', 2)
self.assertEquals(expected, mpu.memory[0x0043])
def test_rmb2_does_not_affect_status_register(self):
mpu = self._make_mpu()
mpu.memory[0x0043] = int('11111111',2)
self._write(mpu.memory, 0x0000, (0x27, 0x43)) #=> RMB2 $43
expected = int('01010101', 2)
mpu.flags = expected
mpu.step()
self.assertEquals(expected, mpu.flags)
# RMB3
def test_rmb3_clears_bit_3_without_affecting_other_bits(self):
@ -391,6 +418,15 @@ class MPUTests(unittest.TestCase, Common6502Tests):
expected = int('11110111', 2)
self.assertEquals(expected, mpu.memory[0x0043])
def test_rmb3_does_not_affect_status_register(self):
mpu = self._make_mpu()
mpu.memory[0x0043] = int('11111111',2)
self._write(mpu.memory, 0x0000, (0x37, 0x43)) #=> RMB3 $43
expected = int('01010101', 2)
mpu.flags = expected
mpu.step()
self.assertEquals(expected, mpu.flags)
# RMB4
def test_rmb4_clears_bit_4_without_affecting_other_bits(self):
@ -403,6 +439,15 @@ class MPUTests(unittest.TestCase, Common6502Tests):
expected = int('11101111', 2)
self.assertEquals(expected, mpu.memory[0x0043])
def test_rmb4_does_not_affect_status_register(self):
mpu = self._make_mpu()
mpu.memory[0x0043] = int('11111111',2)
self._write(mpu.memory, 0x0000, (0x47, 0x43)) #=> RMB4 $43
expected = int('01010101', 2)
mpu.flags = expected
mpu.step()
self.assertEquals(expected, mpu.flags)
# RMB5
def test_rmb5_clears_bit_5_without_affecting_other_bits(self):
@ -415,6 +460,15 @@ class MPUTests(unittest.TestCase, Common6502Tests):
expected = int('11011111', 2)
self.assertEquals(expected, mpu.memory[0x0043])
def test_rmb5_does_not_affect_status_register(self):
mpu = self._make_mpu()
mpu.memory[0x0043] = int('11111111',2)
self._write(mpu.memory, 0x0000, (0x57, 0x43)) #=> RMB5 $43
expected = int('01010101', 2)
mpu.flags = expected
mpu.step()
self.assertEquals(expected, mpu.flags)
# RMB6
def test_rmb6_clears_bit_6_without_affecting_other_bits(self):
@ -427,6 +481,15 @@ class MPUTests(unittest.TestCase, Common6502Tests):
expected = int('10111111', 2)
self.assertEquals(expected, mpu.memory[0x0043])
def test_rmb6_does_not_affect_status_register(self):
mpu = self._make_mpu()
mpu.memory[0x0043] = int('11111111',2)
self._write(mpu.memory, 0x0000, (0x67, 0x43)) #=> RMB6 $43
expected = int('01010101', 2)
mpu.flags = expected
mpu.step()
self.assertEquals(expected, mpu.flags)
# RMB7
def test_rmb7_clears_bit_7_without_affecting_other_bits(self):
@ -439,6 +502,15 @@ class MPUTests(unittest.TestCase, Common6502Tests):
expected = int('01111111', 2)
self.assertEquals(expected, mpu.memory[0x0043])
def test_rmb7_does_not_affect_status_register(self):
mpu = self._make_mpu()
mpu.memory[0x0043] = int('11111111',2)
self._write(mpu.memory, 0x0000, (0x77, 0x43)) #=> RMB7 $43
expected = int('01010101', 2)
mpu.flags = expected
mpu.step()
self.assertEquals(expected, mpu.flags)
# STA Zero Page, Indirect
def test_sta_zp_indirect_stores_a_leaves_a_and_n_flag_unchanged(self):