def test_hash_verilog():
[foo0] = m.DefineFromVerilog("""
module foo(input I, output O);
assign O = I;
endmodule""")
foo1 = m.DefineCircuit("foo", "I", m.In(m.Bit), "O", m.Out(m.Bit))
m.EndCircuit()
top = m.DefineCircuit("top", "I", m.In(m.Bit), "O", m.Out(m.Bit))
foo0_inst = foo0()
foo1_inst = foo1()
m.wire(top.I, foo0_inst.I)
m.wire(foo0_inst.O, foo1_inst.I)
m.wire(foo1_inst.O, top.O)
m.EndDefine()
assert repr(foo0) == repr(foo1)
# Run the uniquification pass as a mechanism to check that foo0 and foo1
# hash to two different things even though they have the same repr.
pass_ = m.UniquificationPass(top, None)
pass_._run(top)
foo_seen = pass_.seen["foo"]
assert len(foo_seen) == 2
for v in foo_seen.values():
assert len(v) == 1
expected_ids_ = {id(v[0]) for v in foo_seen.values()}
ids_ = {id(foo0), id(foo1)}
assert expected_ids_ == ids_
def test_str_repr():
And2 = m.DeclareCircuit('And2', "I0", m.In(m.Bit), "I1", m.In(m.Bit), "O",
m.Out(m.Bit))
XOr2 = m.DeclareCircuit('XOr2', "I0", m.In(m.Bit), "I1", m.In(m.Bit), "O",
m.Out(m.Bit))
Logic2 = m.DefineCircuit('Logic2', 'I0', m.In(m.Bit), 'I1', m.In(m.Bit),
'O', m.Out(m.Bit))
m.wire(XOr2()(And2()(Logic2.I0, Logic2.I1), 1), Logic2.O)
m.EndCircuit()
assert str(Logic2) == "Logic2(I0: In(Bit), I1: In(Bit), O: Out(Bit))"
print(repr(Logic2))
assert repr(Logic2) == """\
Logic2 = DefineCircuit("Logic2", "I0", In(Bit), "I1", In(Bit), "O", Out(Bit))
And2_inst0 = And2()
XOr2_inst0 = XOr2()
wire(Logic2.I0, And2_inst0.I0)
wire(Logic2.I1, And2_inst0.I1)
wire(And2_inst0.O, XOr2_inst0.I0)
wire(1, XOr2_inst0.I1)
wire(XOr2_inst0.O, Logic2.O)
EndCircuit()\
"""
expected = [
"XOr2_inst0<XOr2(I0: In(Bit), I1: In(Bit), O: Out(Bit))>",
"And2_inst0<And2(I0: In(Bit), I1: In(Bit), O: Out(Bit))>"
]
for inst, expected in zip(Logic2.instances, expected):
assert str(inst) == expected
def test_include_verilog(target, simulator):
SB_DFF = m.DeclareCircuit('SB_DFF', "D", m.In(m.Bit), "Q", m.Out(m.Bit),
"C", m.In(m.Clock))
main = m.DefineCircuit('main', "I", m.In(m.Bit), "O", m.Out(m.Bit),
*m.ClockInterface())
ff = SB_DFF()
m.wire(ff.D, main.I)
m.wire(ff.Q, main.O)
m.EndDefine()
tester = fault.Tester(main, main.CLK)
tester.poke(main.CLK, 0)
tester.poke(main.I, 1)
tester.eval()
tester.expect(main.O, 0)
tester.step(2)
tester.expect(main.O, 1)
sb_dff_filename = pathlib.Path("tests/sb_dff_sim.v").resolve()
kwargs = {}
if simulator is not None:
kwargs["simulator"] = simulator
with tempfile.TemporaryDirectory() as tmp_dir:
tester.compile_and_run(target=target, directory=tmp_dir,
include_verilog_libraries=[sb_dff_filename],
**kwargs)
if target in ["verilator"]:
# Should work by including the tests/ directory which contains the
# verilog file SB_DFF.v
dir_path = os.path.dirname(os.path.realpath(__file__))
with tempfile.TemporaryDirectory() as tmp_dir:
tester.compile_and_run(target=target, directory=tmp_dir,
include_directories=[dir_path], **kwargs)
def test_multiple_assign(target):
EQ = m.DefineCircuit("eq", "I0", m.In(m.Bit), "I1", m.In(m.Bit), "O",
m.Out(m.Bit))
m.wire(0, EQ.O)
m.EndDefine()
@m.circuit.combinational
def logic(a: m.Bit) -> (m.Bit,):
if EQ()(a, m.bit(0)):
c = m.bit(1)
c = m.bit(0)
else:
c = m.bit(0)
c = m.bit(1)
return (c,)
class Foo(m.Circuit):
IO = ["a", m.In(m.Bit),
"c", m.Out(m.Bit)]
@classmethod
def definition(io):
c = logic(io.a)
m.wire(c, io.c)
compile_and_check("multiple_assign", Foo, target)
def create_io1out_pad():
cb = m.DefineCircuit("io1out_pad", "clk", m.In(m.Clock), "rst",
m.In(m.Reset), "config_data", m.In(m.Bits(32)),
"config_addr", m.In(m.Bits(32)), "tile_id",
m.In(m.Bits(16)), "pin_0", m.In(m.Bit), "pin_1",
m.In(m.Bit), "pin_2", m.In(m.Bit), "pin_3",
m.In(m.Bit), "top_pin", m.Out(m.Bits(1)))
# Configuration data
config_reg = mantle.Register(32, init=0, has_ce=True, has_reset=True)
addr_match = mantle.EQ(16)
m.wire(addr_match.I0, cb.config_addr[0:16])
m.wire(addr_match.I1, cb.tile_id)
m.wire(addr_match.O, config_reg.CE)
m.wire(cb.config_data, config_reg.I)
m.wire(cb.clk, config_reg.CLK)
rst_inv = mantle.Invert(1)
m.wire(rst_inv.I[0], cb.rst)
m.wire(rst_inv.O[0], config_reg.RESET)
# Config mux
config_mux = mantle.Mux(height=4, width=1)
m.wire(config_mux.O, cb.top_pin)
m.wire(config_mux.S, config_reg.O[0:2])
m.wire(cb.pin_0, config_mux.I0[0])
m.wire(cb.pin_1, config_mux.I1[0])
m.wire(cb.pin_2, config_mux.I2[0])
m.wire(cb.pin_3, config_mux.I3[0])
m.EndDefine()
return cb
def test_optional_assignment(target):
EQ = m.DefineCircuit("eq", "I0", m.In(m.Bit), "I1", m.In(m.Bit), "O",
m.Out(m.Bit))
m.wire(0, EQ.O)
m.EndDefine()
@m.circuit.combinational
def logic(a: m.Bit) -> (m.Bit, m.Bit):
d = m.bit(1)
if EQ()(a, m.bit(0)):
c = m.bit(1)
else:
c = m.bit(0)
d = m.bit(1)
return (c, d)
class Foo(m.Circuit):
IO = ["a", m.In(m.Bit),
"c", m.Out(m.Bit),
"d", m.Out(m.Bit)]
@classmethod
def definition(io):
c, d = logic(io.a)
m.wire(c, io.c)
m.wire(d, io.d)
compile_and_check("optional_assignment", Foo, target)
def test_for_loop_def(target, suffix):
m.set_codegen_debug_info(True)
And2 = m.DeclareCircuit('And2', "I0", m.In(m.Bit), "I1", m.In(m.Bit), "O",
m.Out(m.Bit))
main = m.DefineCircuit("main", "I", m.In(m.Bits[2]), "O", m.Out(m.Bit))
and2_prev = None
for i in range(0, 4):
and2 = And2()
if i == 0:
m.wire(main.I[0], and2.I0)
m.wire(main.I[1], and2.I1)
else:
m.wire(and2_prev.O, and2.I0)
m.wire(main.I[1], and2.I1)
and2_prev = and2
m.wire(and2.O, main.O)
m.EndCircuit()
m.compile("build/test_for_loop_def", main, output=target)
m.set_codegen_debug_info(False)
assert check_files_equal(__file__, f"build/test_for_loop_def.{suffix}",
f"gold/test_for_loop_def.{suffix}")
def test_interleaved_instance_wiring(target, suffix):
m.set_codegen_debug_info(True)
And2 = m.DeclareCircuit('And2', "I0", m.In(m.Bit), "I1", m.In(m.Bit), "O",
m.Out(m.Bit))
main = m.DefineCircuit("main", "I", m.In(m.Bits[2]), "O", m.Out(m.Bit))
and2_0 = And2()
and2_1 = And2()
m.wire(main.I[0], and2_0.I0)
m.wire(main.I[1], and2_0.I1)
m.wire(and2_0.O, and2_1.I0)
m.wire(main.I[1], and2_1.I1)
and2_2 = And2()
m.wire(and2_1.O, and2_2.I0)
m.wire(main.I[0], and2_2.I1)
m.wire(and2_2.O, main.O)
m.EndCircuit()
m.compile("build/test_interleaved_instance_wiring", main, output=target)
m.set_codegen_debug_info(False)
assert check_files_equal(
__file__, f"build/test_interleaved_instance_wiring.{suffix}",
f"gold/test_interleaved_instance_wiring.{suffix}")
def test_simple_def(target, suffix):
m.set_codegen_debug_info(True)
And2 = m.DeclareCircuit('And2', "I0", m.In(m.Bit), "I1", m.In(m.Bit), "O",
m.Out(m.Bit))
main = m.DefineCircuit("main", "I", m.In(m.Bits[2]), "O", m.Out(m.Bit))
and2 = And2()
m.wire(main.I[0], and2.I0)
m.wire(main.I[1], and2.I1)
m.wire(and2.O, main.O)
m.EndCircuit()
m.compile("build/test_simple_def", main, output=target)
assert check_files_equal(__file__, f"build/test_simple_def.{suffix}",
f"gold/test_simple_def.{suffix}")
# Check that the subclassing pattern produces the same annotations
class Main(m.Circuit):
IO = ["I", m.In(m.Bits[2]), "O", m.Out(m.Bit)]
@classmethod
def definition(io):
and2 = And2()
m.wire(io.I[0], and2.I0)
m.wire(io.I[1], and2.I1)
m.wire(and2.O, io.O)
# Create a fresh context for second compilation.
m.compile("build/test_simple_def_class", Main, output=target)
m.set_codegen_debug_info(False)
assert check_files_equal(__file__, f"build/test_simple_def_class.{suffix}",
f"gold/test_simple_def_class.{suffix}")
def test_ram():
main = m.DefineCircuit("main", "rdata", m.Out(m.Bit), "CLKIN",
m.In(m.Clock))
ram = mantle.RAM(4, 1, name="ram")
waddr = mantle.Counter(2, cout=False)
wdata = mantle.Counter(1, cout=False)
we = 1
raddr = mantle.Counter(2, cout=False)
ram(raddr, waddr, wdata, we, CLK=main.CLKIN)
m.wire(ram.RDATA[0], main.rdata)
m.EndDefine()
if m.mantle_target == "coreir":
output = "coreir"
suffix = "json"
else:
output = "verilog"
suffix = "v"
m.compile(f"build/test_common_ram_{m.mantle_target}", main, output)
assert check_files_equal(
__file__, f"build/test_common_ram_{m.mantle_target}.{suffix}",
f"gold/test_common_ram_{m.mantle_target}.{suffix}")
def test_binary_primitive(binary_primitive, width):
primitive_name, primitive_op, signed = binary_primitive
prim = m.DeclareCircuit(f"primitive_name",
"in0",
m.In(m.Array(width, m.Bit)),
"in1",
m.In(m.Array(width, m.Bit)),
"out",
m.Out(m.Array(width, m.Bit)),
coreir_lib="coreir",
coreir_name=primitive_name,
coreir_genargs={"width": width})
circ = m.DefineCircuit(f"DesignTop", "I0", m.In(m.Array(width, m.Bit)),
"I1", m.In(m.Array(width, m.Bit)), "O",
m.Out(m.Array(width, m.Bit)))
inst = prim()
m.wire(circ.I0, inst.in0)
m.wire(circ.I1, inst.in1)
m.wire(circ.O, inst.out)
m.EndDefine()
m.compile(f"build/{primitive_name}", circ, output="coreir")
dir_path = os.path.dirname(os.path.realpath(__file__))
result = delegator.run(
f"CGRAMapper/bin/cgra-mapper build/{primitive_name}.json build/{primitive_name}_mapped.json",
cwd=dir_path)
assert not result.return_code, result.out + "\n" + result.err
result = delegator.run(f"./CGRAGenerator/bin/generate.csh")
assert not result.return_code, result.out + "\n" + result.err
result = delegator.run(
f"CGRAGenerator/bitstream/bsbuilder/serpent.csh build/{primitive_name}_mapped.json -cgra_info CGRAGenerator/hardware/generator_z/top/cgra_info.txt -o build/{primitive_name}_mapped_annotated"
)
assert not result.return_code, result.out + "\n" + result.err
def test_compile(caplog):
And2 = m.DeclareCircuit('And2', "I0", m.In(m.Bit), "I1", m.In(m.Bit), "O",
m.Out(m.Bit))
# Make it a mock mantle module
class MockMantle:
pass
MockMantle.__name__ = "mantle.coreir.arith"
And2.debug_info = m.debug.debug_info(And2.debug_info.filename,
And2.debug_info.lineno, MockMantle)
main = m.DefineCircuit("main", "I", m.In(m.Bits[2]), "O", m.Out(m.Bit))
and2 = And2()
m.wire(main.I[0], and2.I0)
m.wire(main.I[1], and2.I1)
m.wire(and2.O, main.O)
m.EndCircuit()
m.compile("build/test_compile_coreir_verilog", main)
assert check_files_equal(__file__, "build/test_compile_coreir_verilog.v",
"gold/test_compile_coreir_verilog.v")
assert caplog.records[
0].msg == "`m.compile` called with `output == verilog` and `m.mantle_target == \"coreir\"` and mantle has been imported, When generating verilog from circuits from the \"coreir\" mantle target, you should set `output=\"coreir-verilog\"`. Doing this automatically."
def test_inv():
Test = m.DefineCircuit("INV", "I", m.In(m.Bit), "O", m.Out(m.Bit))
inv = greenpak4.GP_INV()
m.wire(Test.I, inv.IN)
m.wire(inv.OUT, Test.O)
com(Test, 'inv')
def test_two_ops():
Top = m.DefineCircuit("test_two_ops", "I0", m.In(m.UInt(8)), "I1",
m.In(m.UInt(8)), "O", m.Out(m.UInt(8)))
result = Top.I0 + Top.I1 - Top.I0
m.wire(result, Top.O)
m.EndCircuit()
m.compile("test_two_ops", Top, output="coreir-verilog", inline=True)
# assert check_files_equal(__file__, "build/test_two_ops.v",
# "gold/test_two_ops.v")
# Roundabout way to do this since we can't pass the --inline flag through
# fault's tester interface yet
tester = fault.Tester(Top)
for i in range(0, 16):
I0 = fault.random.random_bv(8)
I1 = fault.random.random_bv(8)
tester.poke(Top.I0, I0)
tester.poke(Top.I1, I1)
tester.eval()
tester.expect(Top.O, I0 + I1 - I0)
tester.compile_and_run(target="verilator",
skip_compile=True,
directory=".")
def test_env_mod(target, simulator):
myinv = m.DefineCircuit('myinv', 'a', m.In(m.Bit), 'y', m.Out(m.Bit))
m.wire(~myinv.a, myinv.y)
m.EndDefine()
tester = fault.InvTester(myinv, in_='a', out='y')
tester.compile_and_run(target=target, simulator=simulator, tmp_dir=True)
def test_simple_top():
Top = m.DefineCircuit("Top", "I0", m.In(m.UInt(8)), "I1", m.In(m.UInt(8)),
"O", m.Out(m.UInt(8)))
sum_ = Top.I0 + Top.I1
m.wire(sum_, Top.O)
m.EndCircuit()
m.compile("test_simple_top", Top, output="coreir-verilog", inline=True)
def test_declare_interface_polarity():
And2Decl = m.DeclareCircuit("And2", "I0", m.In(m.Bit), "I1", m.In(m.Bit),
"O", m.Out(m.Bit))
And2Defn = m.DefineCircuit("And2", "I0", m.In(m.Bit), "I1", m.In(m.Bit),
"O", m.Out(m.Bit))
assert And2Decl.interface.ports["I0"].isinput() == \
And2Defn.interface.ports["I0"].isinput()
def test_error():
circ = m.DefineCircuit("test", "a", m.In(m.Bits[4]), "b", m.Out(m.Bits[4]))
try:
~circ.a
assert False, \
"Operator should throw an error since mantle is not imported"
except MantleImportError:
pass
def test_tester_verilog_wrapped(target, simulator):
SimpleALU = m.DefineFromVerilogFile("tests/simple_alu.v",
type_map={"CLK": m.In(m.Clock)},
target_modules=["SimpleALU"])[0]
circ = m.DefineCircuit("top",
"a", m.In(m.Bits[16]),
"b", m.In(m.Bits[16]),
"c", m.Out(m.Bits[16]),
"config_data", m.In(m.Bits[2]),
"config_en", m.In(m.Bit),
"CLK", m.In(m.Clock))
simple_alu = SimpleALU()
m.wire(simple_alu.a, circ.a)
m.wire(simple_alu.b, circ.b)
m.wire(simple_alu.c, circ.c)
m.wire(simple_alu.config_data, circ.config_data)
m.wire(simple_alu.config_en, circ.config_en)
m.wire(simple_alu.CLK, circ.CLK)
m.EndDefine()
tester = fault.Tester(circ, circ.CLK)
tester.verilator_include("SimpleALU")
tester.verilator_include("ConfigReg")
tester.circuit.CLK = 0
for i in range(0, 4):
tester.poke(
fault.WrappedVerilogInternalPort("SimpleALU_inst0.config_reg.Q",
m.Bits[2]),
i)
tester.step(2)
tester.expect(
fault.WrappedVerilogInternalPort("SimpleALU_inst0.opcode",
m.Bits[2]),
i)
signal = tester.peek(
fault.WrappedVerilogInternalPort("SimpleALU_inst0.opcode",
m.Bits[2]))
tester.expect(
fault.WrappedVerilogInternalPort("SimpleALU_inst0.opcode",
m.Bits[2]),
signal)
tester.expect(
fault.WrappedVerilogInternalPort(
"SimpleALU_inst0.config_reg.Q", m.Bits[2]),
i)
signal = tester.peek(
fault.WrappedVerilogInternalPort(
"SimpleALU_inst0.config_reg.Q", m.Bits[2]))
tester.expect(
fault.WrappedVerilogInternalPort(
"SimpleALU_inst0.config_reg.Q", m.Bits[2]),
signal)
with tempfile.TemporaryDirectory(dir=".") as _dir:
if target == "verilator":
tester.compile_and_run(target, directory=_dir, flags=["-Wno-fatal"])
else:
tester.compile_and_run(target, directory=_dir, simulator=simulator)
def test_lut2():
Test = m.DefineCircuit("LUT2", "I0", m.In(m.Bit), "I1", m.In(m.Bit), "O",
m.Out(m.Bit))
lut = greenpak4.GP_LUT2(INIT="4'h8")
m.wire(Test.I0, lut.IN0)
m.wire(Test.I1, lut.IN1)
m.wire(lut.OUT, Test.O)
com(Test, 'lut2')
def build_modules_from_magma(modlist):
dummy_top = m.DefineCircuit("dummy_top")
for mod_info in modlist:
mod_name = mod_info[0]
mod = mod_info[1]
mod()
m.compile("dummy_top", dummy_top, output="coreir")
os_cmd("coreir -i " + mod_name + ".json" + " -o " + mod_name + ".v")
def visit_List(self, node):
assert len(node.elts) == 1, "Expected only list literatals that " \
"contain a single expression"
# FIXME: Hack to prevent instancing logic from polluting currently open
# definition
m.DefineCircuit("tmp")
result = eval(astor.to_source(node.elts[0]).rstrip(), self.defn_env)
m.EndCircuit()
return EscapedExpression(result, node)
def test_array_nesting():
T = m.Array[10, m.Tuple(I=m.In(m.Bit), O=m.Out(m.Bit))]
Foo = m.DefineCircuit("Foo", "IFC", T)
for i in range(10):
m.wire(Foo.IFC[i].I, Foo.IFC[i].O)
m.EndCircuit()
m.compile("build/test_array_nesting", Foo, output="coreir")
assert check_files_equal(__file__, f"build/test_array_nesting.json",
f"gold/test_array_nesting.json")
def test_romb():
main = m.DefineCircuit("test_romb", "O", m.Out(m.Bits[8]), "CLK",
m.In(m.Clock))
rom = [i % 256 for i in range(2048)]
romb = ROMB16(rom, 8)
m.wire(romb(m.bits(1, 11), clk=main.CLK), main.O)
m.EndCircuit()
com(main, 'romb2048x8')
def test_lut3():
Test = m.DefineCircuit("LUT3", "I0", m.In(m.Bit), "I1", m.In(m.Bit), "I2",
m.In(m.Bit), "O", m.Out(m.Bit))
lut = greenpak4.GP_LUT3(INIT="8'h80")
m.wire(Test.I0, lut.IN0)
m.wire(Test.I1, lut.IN1)
m.wire(Test.I2, lut.IN2)
m.wire(lut.OUT, Test.O)
com(Test, 'lut3')
def test_verilog_field_uniquify():
# https://github.com/phanrahan/magma/issues/330
HalfAdder = m.DefineCircuit('HalfAdder', 'A', m.In(m.Bit), 'B',
m.In(m.Bit), 'S', m.Out(m.Bit), 'C',
m.Out(m.Bit))
HalfAdder.verilog = '''\
assign S = A ^ B;
assign C = A & B;\
'''
m.EndCircuit()
def test_dff():
main = m.DefineCircuit('main', 'I', m.In(m.Bit), "O", m.Out(m.Bit), "CLK",
m.In(m.Clock))
dff = SB_DFF()
m.wire(main.I, dff.D)
m.wire(dff.Q, main.O)
m.EndCircuit()
print(compile(main)) # compile will wire up the CLK
print(repr(main))
def test_ff(ff):
Test = m.DefineCircuit(ff, "I", m.In(m.Bit), "CLK", m.In(m.Clock), "O",
m.Out(m.Bit))
DFF = getattr(greenpak4, 'GP_' + ff)
dff = DFF()
m.wire(Test.I, dff.D)
m.wire(Test.CLK, dff.CLK)
m.wire(dff.Q if ff == 'DFF' else dff.nQ, Test.O)
com(Test, ff)
def test_compile_coreir():
width = 16
numInputs = 4
doubleT = magma.Bits[width]
double = magma.DefineCircuit("double", "I", magma.In(doubleT), "O",
magma.Out(doubleT))
shift_amount = 2
output = magma.concat(double.I[shift_amount:width],
magma.bits(0, shift_amount))
magma.wire(output, double.O)
coreir_double = magma.backend.coreir.coreir_.compile(double)
c = coreir_double.context
def get_lib(lib):
if lib in {"coreir", "mantle", "corebit"}:
return c.get_namespace(lib)
elif lib == "global":
return c.global_namespace
else:
return c.load_library(lib)
def import_(lib, name):
return get_lib(lib).generators[name]
mapParallelParams = c.new_values({
"numInputs": numInputs,
"operator": coreir_double
})
test_module_typ = c.Record({
"in":
c.Array(numInputs, c.Array(width, c.BitIn())),
"out":
c.Array(numInputs, c.Array(width, c.Bit()))
})
test_module = c.global_namespace.new_module("test_module", test_module_typ)
test_module_def = test_module.new_definition()
mapParallel = import_("aetherlinglib", "mapParallel")
mapMod = mapParallel(numInputs=numInputs, operator=coreir_double)
mapDouble = test_module_def.add_module_instance("mapDouble", mapMod)
test_module_def.connect(test_module_def.interface.select("in"),
mapDouble.select("I"))
test_module_def.connect(mapDouble.select("O"),
test_module_def.interface.select("out"))
test_module_def.print_()
test_module.definition = test_module_def
test_module.print_()
dir_path = os.path.dirname(os.path.realpath(__file__))
test_module.save_to_file(os.path.join(dir_path, "mapParallel_test.json"))
with open(os.path.join(dir_path, "mapParallel_test.json"), "r") as actual:
with open(os.path.join(dir_path, "mapParallel_test_gold.json"),
"r") as gold:
assert actual.read() == gold.read()
mod = c.load_from_file(os.path.join(dir_path, "mapParallel_test.json"))
mod.print_()
def test_lut4():
Test = m.DefineCircuit("LUT4", "I0", m.In(m.Bit), "I1", m.In(m.Bit), "I2",
m.In(m.Bit), "I3", m.In(m.Bit), "O", m.Out(m.Bit))
lut = greenpak4.GP_LUT4(INIT="16'h8000")
m.wire(Test.I0, lut.IN0)
m.wire(Test.I1, lut.IN1)
m.wire(Test.I2, lut.IN2)
m.wire(Test.I3, lut.IN3)
m.wire(lut.OUT, Test.O)
com(Test, 'lut4')
