示例#1
0
def test_basic():
    network = Network()
    address = BinaryIn(network, 8)
    write = Switch(network)
    m1_data = BinaryIn(network, 8, 100)
    m2_data = BinaryIn(network, 8, 200)
    modules = [
        (0, 3, m1_data),
        (8, 2, m2_data),
    ]
    data, (m1_write, m2_write) = bus(address, write, modules)
    data = BinaryOut(data)

    network.drain()
    assert data.read() == 100
    assert not m1_write.read()
    assert not m2_write.read()

    write.write(True)
    network.drain()
    assert data.read() == 100
    assert m1_write.read()
    assert not m2_write.read()

    write.write(False)
    address.write(9)
    network.drain()
    assert data.read() == 200
    assert not m1_write.read()
    assert not m2_write.read()

    write.write(True)
    network.drain()
    assert data.read() == 200
    assert not m1_write.read()
    assert m2_write.read()
示例#2
0
def test_basic():
    network = Network()
    address = BinaryIn(network, 8)
    write = Switch(network)
    m1_data = BinaryIn(network, 8, 100)
    m2_data = BinaryIn(network, 8, 200)
    modules = [
        (0, 3, m1_data),
        (8, 2, m2_data),
    ]
    data, (m1_write, m2_write) = bus(address, write, modules)
    data = BinaryOut(data)

    network.drain()
    assert data.read() == 100
    assert not m1_write.read()
    assert not m2_write.read()

    write.write(True)
    network.drain()
    assert data.read() == 100
    assert m1_write.read()
    assert not m2_write.read()

    write.write(False)
    address.write(9)
    network.drain()
    assert data.read() == 200
    assert not m1_write.read()
    assert not m2_write.read()

    write.write(True)
    network.drain()
    assert data.read() == 200
    assert not m1_write.read()
    assert m2_write.read()
示例#3
0
def test_jmp():
    """ twiddle the bits manually """
    network = Network()
    clock = Switch(network)
    data_in = BinaryIn(network, 8)
    pc_in = BinaryIn(network, 8)
    write_pc = Switch(network)

    def step():
        network.drain()
        clock.write(True)
        network.drain()
        clock.write(False)
        network.drain()

    addr, data_out, write = cpu_core(clock, data_in, pc_in, write_pc)

    addr = BinaryOut(addr)
    data_out = BinaryOut(data_out)

    # fetch addr1 from pc
    network.drain()
    assert not write.read()
    assert addr.read() == 0
    data_in.write(100)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 100
    data_in.write(200)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 1
    data_in.write(102)
    pc_in.write(200)
    write_pc.write(True)

    # write data to addr2 AND PC
    step()
    assert write.read()
    assert addr.read() == 102
    assert data_out.read() == 200

    # fetch addr1 from pc
    step()
    assert not write.read()
    assert addr.read() == 200
    write_pc.write(False)
    data_in.write(99)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 99
    data_in.write(98)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 201
    data_in.write(97)

    # write data to addr2
    step()
    assert write.read()
    assert addr.read() == 97
    assert data_out.read() == 98
示例#4
0
def test_jmp2():
    """ same deal as above but with automatic signals so more realistic timing """
    network = Network()
    clock = Switch(network)
    data_in = BinaryIn(network, 8)
    pc_in = PlaceholderWord(network, 8)
    write_pc = Placeholder(network)

    def step():
        network.drain()
        clock.write(True)
        network.drain()
        clock.write(False)
        network.drain()

    addr, data_out, write = cpu_core(clock, data_in, pc_in, write_pc)
    write_pc = write_pc.replace(And(write, mux.equals(102, addr)))
    pc_in = pc_in.replace(data_out)

    addr = BinaryOut(addr)
    data_out = BinaryOut(data_out)

    # fetch addr1 from pc
    network.drain()
    assert not write.read()
    assert addr.read() == 0
    data_in.write(100)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 100
    data_in.write(200)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 1
    data_in.write(102)

    # write data to addr2 AND PC
    step()
    assert write.read()
    assert addr.read() == 102
    assert data_out.read() == 200

    # fetch addr1 from pc
    step()
    assert not write.read()
    assert addr.read() == 200
    data_in.write(99)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 99
    data_in.write(98)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 201
    data_in.write(97)

    # write data to addr2
    step()
    assert write.read()
    assert addr.read() == 97
    assert data_out.read() == 98
示例#5
0
def test_basic():
    network = Network()
    clock = Switch(network)
    data_in = BinaryIn(network, 8)
    write_pc = Switch(network)
    pc_in = BinaryIn(network, 8)

    def step():
        network.drain()
        clock.write(True)
        network.drain()
        clock.write(False)
        network.drain()

    addr, data_out, write = cpu_core(clock, data_in, pc_in, write_pc)
    addr = BinaryOut(addr)
    data_out = BinaryOut(data_out)

    # fetch addr1 from pc
    network.drain()
    assert not write.read()
    assert addr.read() == 0
    data_in.write(100)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 100
    data_in.write(101)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 1
    data_in.write(102)

    # write data to addr2
    step()
    assert write.read()
    assert addr.read() == 102
    assert data_out.read() == 101

    # fetch addr1 from pc
    step()
    assert not write.read()
    assert addr.read() == 2
    data_in.write(99)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 99
    data_in.write(98)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 3
    data_in.write(97)

    # write data to addr2
    step()
    assert write.read()
    assert addr.read() == 97
    assert data_out.read() == 98
示例#6
0
def test_basic():
    network = Network()
    clock = Switch(network)
    data_in = BinaryIn(network, 8)
    write_pc = Switch(network)
    pc_in = BinaryIn(network, 8)

    def step():
        network.drain()
        clock.write(True)
        network.drain()
        clock.write(False)
        network.drain()

    addr, data_out, write = cpu_core(clock, data_in, pc_in, write_pc)
    addr = BinaryOut(addr)
    data_out = BinaryOut(data_out)

    # fetch addr1 from pc
    network.drain()
    assert not write.read()
    assert addr.read() == 0
    data_in.write(100)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 100
    data_in.write(101)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 1
    data_in.write(102)

    # write data to addr2
    step()
    assert write.read()
    assert addr.read() == 102
    assert data_out.read() == 101

    # fetch addr1 from pc
    step()
    assert not write.read()
    assert addr.read() == 2
    data_in.write(99)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 99
    data_in.write(98)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 3
    data_in.write(97)

    # write data to addr2
    step()
    assert write.read()
    assert addr.read() == 97
    assert data_out.read() == 98
示例#7
0
def test_jmp():
    """ twiddle the bits manually """
    network = Network()
    clock = Switch(network)
    data_in = BinaryIn(network, 8)
    pc_in = BinaryIn(network, 8)
    write_pc = Switch(network)

    def step():
        network.drain()
        clock.write(True)
        network.drain()
        clock.write(False)
        network.drain()

    addr, data_out, write = cpu_core(clock, data_in, pc_in, write_pc)

    addr = BinaryOut(addr)
    data_out = BinaryOut(data_out)

    # fetch addr1 from pc
    network.drain()
    assert not write.read()
    assert addr.read() == 0
    data_in.write(100)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 100
    data_in.write(200)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 1
    data_in.write(102)
    pc_in.write(200)
    write_pc.write(True)

    # write data to addr2 AND PC
    step()
    assert write.read()
    assert addr.read() == 102
    assert data_out.read() == 200

    # fetch addr1 from pc
    step()
    assert not write.read()
    assert addr.read() == 200
    write_pc.write(False)
    data_in.write(99)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 99
    data_in.write(98)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 201
    data_in.write(97)

    # write data to addr2
    step()
    assert write.read()
    assert addr.read() == 97
    assert data_out.read() == 98
示例#8
0
def test_jmp2():
    """ same deal as above but with automatic signals so more realistic timing """
    network = Network()
    clock = Switch(network)
    data_in = BinaryIn(network, 8)
    pc_in = PlaceholderWord(network, 8)
    write_pc = Placeholder(network)

    def step():
        network.drain()
        clock.write(True)
        network.drain()
        clock.write(False)
        network.drain()

    addr, data_out, write = cpu_core(clock, data_in, pc_in, write_pc)
    write_pc = write_pc.replace(
        And(write, mux.address_matches(102, addr, invert(addr))))
    pc_in = pc_in.replace(data_out)

    addr = BinaryOut(addr)
    data_out = BinaryOut(data_out)

    # fetch addr1 from pc
    network.drain()
    assert not write.read()
    assert addr.read() == 0
    data_in.write(100)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 100
    data_in.write(200)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 1
    data_in.write(102)

    # write data to addr2 AND PC
    step()
    assert write.read()
    assert addr.read() == 102
    assert data_out.read() == 200

    # fetch addr1 from pc
    step()
    assert not write.read()
    assert addr.read() == 200
    data_in.write(99)

    # fetch data from addr1
    step()
    assert not write.read()
    assert addr.read() == 99
    data_in.write(98)

    # fetch addr2 from pc
    step()
    assert not write.read()
    assert addr.read() == 201
    data_in.write(97)

    # write data to addr2
    step()
    assert write.read()
    assert addr.read() == 97
    assert data_out.read() == 98