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from atk16_emu import Machine
from test.utils import make_rom
def test_alr_add_small_unsigned():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_000]) # ALR target=RC left=RA right=RB alu_code=0
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 10
machine.rb.value = 20
machine.run()
machine.step()
assert machine.rc.value == 30
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
def test_alr_add_large_unsigned():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_000]) # ALR target=RC left=RA right=RB alu_code=0
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0xFFFF
machine.rb.value = 20
machine.run()
machine.step()
assert machine.rc.value == 19
assert machine.fr.carry == True
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
def test_alr_add_small_signed():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_000]) # ALR target=RC left=RA right=RB alu_code=0
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0xFFFF # -1
machine.rb.value = 0x0001 # 1
machine.run()
machine.step()
assert machine.rc.value == 0
assert machine.fr.carry == True
assert machine.fr.overflow == False
assert machine.fr.zero == True
assert machine.fr.sign == False
def test_alr_add_large_signed():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_000]) # ALR target=RC left=RA right=RB alu_code=0
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0x7FFF # 32767
machine.rb.value = 0x0001 # 1
machine.run()
machine.step()
assert machine.rc.value == 0x8000 # -32768
assert machine.fr.carry == False
assert machine.fr.overflow == True
assert machine.fr.zero == False
assert machine.fr.sign == True
def test_alr_sub_small_unsigned():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_001]) # ALR target=RC left=RA right=RB alu_code=1
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 10
machine.rb.value = 20
machine.run()
machine.step()
assert machine.rc.value == 0xFFF6 # -10
assert machine.fr.carry == True
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == True
def test_alr_sub_large_unsigned():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_001]) # ALR target=RC left=RA right=RB alu_code=1
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0xFFFF
machine.rb.value = 0xFFFF
machine.run()
machine.step()
assert machine.rc.value == 0x0000
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == True
assert machine.fr.sign == False
def test_alr_sub_small_signed():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_001]) # ALR target=RC left=RA right=RB alu_code=1
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0x0001 # 1
machine.rb.value = 0xFFFF # -1
machine.run()
machine.step()
assert machine.rc.value == 0x0002
assert machine.fr.carry == True
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
def test_alr_sub_large_signed():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_001]) # ALR target=RC left=RA right=RB alu_code=1
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0x7FFF # 32767
machine.rb.value = 0xFFFF # -1
machine.run()
machine.step()
assert machine.rc.value == 0x8000 # -32768
assert machine.fr.carry == True
assert machine.fr.overflow == True
assert machine.fr.zero == False
assert machine.fr.sign == True
def test_alr_and():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_010]) # ALR target=RC left=RA right=RB alu_code=2
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0b1010
machine.rb.value = 0b1100
machine.run()
machine.step()
assert machine.rc.value == 0b1000
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
def test_alr_or():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_011]) # ALR target=RC left=RA right=RB alu_code=3
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0b1010
machine.rb.value = 0b1100
machine.run()
machine.step()
assert machine.rc.value == 0b1110
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
def test_alr_xor():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_100]) # ALR target=RC left=RA right=RB alu_code=4
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0b1010
machine.rb.value = 0b1100
machine.run()
machine.step()
assert machine.rc.value == 0b0110
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
def test_alr_slr_small():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_101]) # ALR target=RC left=RA right=RB alu_code=5
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0b1010
machine.rb.value = 0b0001
machine.run()
machine.step()
assert machine.rc.value == 0b0101
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
def test_alr_slr_large():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_101]) # ALR target=RC left=RA right=RB alu_code=5
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0xFFFF
machine.rb.value = 0x1
machine.run()
machine.step()
assert machine.rc.value == 0x7FFF
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
def test_alr_sar_small():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_110]) # ALR target=RC left=RA right=RB alu_code=6
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0b1010
machine.rb.value = 0b0001
machine.run()
machine.step()
assert machine.rc.value == 0b0101
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
def test_alr_sar_large():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_110]) # ALR target=RC left=RA right=RB alu_code=6
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0xFFFF
machine.rb.value = 0x1
machine.run()
machine.step()
assert machine.rc.value == 0xFFFF
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == True
def test_alr_sll_small():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_111]) # ALR target=RC left=RA right=RB alu_code=7
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0b1010
machine.rb.value = 0b0001
machine.run()
machine.step()
assert machine.rc.value == 0b10100
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
def test_alr_sll_large():
machine = Machine()
rom_image = make_rom([0b0000_010_000_001_111]) # ALR target=RC left=RA right=RB alu_code=7
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 0xFFFF
machine.rb.value = 0x1
machine.run()
machine.step()
assert machine.rc.value == 0xFFFE
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == True
def test_ali_add_small_unsigned():
machine = Machine()
rom_image = make_rom([0b0001_010_000_001_000]) # ALI target=RC left=RA imm=0x000A alu_code=0
machine.load_rom_image(rom_image)
machine.reset()
machine.ra.value = 10
machine.run()
machine.step()
assert machine.rc.value == 11
assert machine.fr.carry == False
assert machine.fr.overflow == False
assert machine.fr.zero == False
assert machine.fr.sign == False
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