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Added 65C02 instruction AND (ZP).

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This commit is contained in:
Mike Naberezny 2009-04-08 18:36:21 -07:00
parent 623118ec3c
commit 766609b9a4
2 changed files with 39 additions and 1 deletions
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5
src/py65/devices/mpu65c02.py
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@ -49,6 +49,11 @@ class MPU(NMOS6502):
self.opORA(self.IndirectXAddr)
self.pc += 1
@instruction(name="AND", mode="zpi", cycles=5)
def i32(self):
self.opAND(self.ZeroPageIndirectAddr)
self.pc += 1
@instruction(name="PHY", mode="imp", cycles=3)
def i5a(self):
self.stPush(self.y)

35
src/py65/tests/devices/test_mpu65c02.py
View File

@ -12,6 +12,35 @@ class MPUTests(unittest.TestCase, Common6502Tests):
self.assertEquals('<65C02: A=00, X=00, Y=00, Flags=20, SP=ff, PC=0000>',
repr(mpu))
# AND Zero Page, Indirect
def test_and_zp_indirect_all_zeros_setting_zero_flag(self):
mpu = self._make_mpu()
mpu.a = 0xFF
self._write(mpu.memory, 0x0000, (0x32, 0x10)) #=> AND ($0010)
self._write(mpu.memory, 0x0010, (0xCD, 0xAB)) #=> Vector to $ABCD
mpu.memory[0xABCD] = 0x00
mpu.step()
self.assertEquals(0x0002, mpu.pc)
self.assertEquals(5, mpu.processorCycles)
self.assertEquals(0x00, mpu.a)
self.assertEquals(mpu.ZERO, mpu.flags & mpu.ZERO)
self.assertEquals(0, mpu.flags & mpu.NEGATIVE)
def test_and_zp_indirect_zeros_and_ones_setting_negative_flag(self):
mpu = self._make_mpu()
mpu.a = 0xFF
self._write(mpu.memory, 0x0000, (0x32, 0x10)) #=> AND ($0010)
self._write(mpu.memory, 0x0010, (0xCD, 0xAB)) #=> Vector to $ABCD
mpu.memory[0xABCD] = 0xAA
mpu.step()
self.assertEquals(0x0002, mpu.pc)
self.assertEquals(5, mpu.processorCycles)
self.assertEquals(0xAA, mpu.a)
self.assertEquals(mpu.NEGATIVE, mpu.flags & mpu.NEGATIVE)
self.assertEquals(0, mpu.flags & mpu.ZERO)
# LDA Zero Page, Indirect
def test_lda_zp_indirect_loads_a_sets_n_flag(self):
@ -22,6 +51,7 @@ class MPUTests(unittest.TestCase, Common6502Tests):
mpu.memory[0xABCD] = 0x80
mpu.step()
self.assertEquals(0x0002, mpu.pc)
self.assertEquals(5, mpu.processorCycles)
self.assertEquals(0x80, mpu.a)
self.assertEquals(mpu.NEGATIVE, mpu.flags & mpu.NEGATIVE)
self.assertEquals(0, mpu.flags & mpu.ZERO)
@ -34,6 +64,7 @@ class MPUTests(unittest.TestCase, Common6502Tests):
mpu.memory[0xABCD] = 0x00
mpu.step()
self.assertEquals(0x0002, mpu.pc)
self.assertEquals(5, mpu.processorCycles)
self.assertEquals(0x00, mpu.a)
self.assertEquals(mpu.ZERO, mpu.flags & mpu.ZERO)
self.assertEquals(0, mpu.flags & mpu.NEGATIVE)
@ -49,9 +80,10 @@ class MPUTests(unittest.TestCase, Common6502Tests):
mpu.memory[0xABCD] = 0x00
mpu.step()
self.assertEquals(0x0002, mpu.pc)
self.assertEquals(5, mpu.processorCycles)
self.assertEquals(0x00, mpu.a)
self.assertEquals(mpu.ZERO, mpu.flags & mpu.ZERO)
def test_ora_zp_indirect_x_turns_bits_on_sets_n_flag(self):
mpu = self._make_mpu()
mpu.flags &= ~(mpu.NEGATIVE)
@ -61,6 +93,7 @@ class MPUTests(unittest.TestCase, Common6502Tests):
mpu.memory[0xABCD] = 0x82
mpu.step()
self.assertEquals(0x0002, mpu.pc)
self.assertEquals(5, mpu.processorCycles)
self.assertEquals(0x83, mpu.a)
self.assertEquals(mpu.NEGATIVE, mpu.flags & mpu.NEGATIVE)
self.assertEquals(0, mpu.flags & mpu.ZERO)