def test_3(self):
# concatenating larger wires should raise an error
sys = py4hw.HWSystem()
a = sys.wire("a", 13)
b = sys.wire("b", 23)
c = sys.wire("c", 11)
r = sys.wire("r", 32)
av = 11
bv = 23
cv = 111
try:
py4hw.ConcatenateMSBF(sys, "concat", [a, b, c], r)
a.put(av)
b.put(bv)
c.put(cv)
sys.getSimulator().clk(1)
exception = False
except:
exception = True
assert (exception)
def test_concat_msbf_1(self):
sys = py4hw.HWSystem()
a = sys.wire("a", 8)
b = sys.wire("b", 8)
r = sys.wire("r", 16)
av = 0x5F
bv = 0x37
py4hw.ConcatenateMSBF(sys, "concat", [a, b], r)
a.put(av)
b.put(bv)
sys.getSimulator().clk(1)
assert (r.get() == 0x5F37)
def test_concat_msbf_2(self):
sys = py4hw.HWSystem()
a = sys.wire("a", 8)
b = sys.wire("b", 8)
c = sys.wire("c", 8)
r = sys.wire("r", 24)
av = 0x5F
bv = 0x37
cv = 0xD1
py4hw.ConcatenateMSBF(sys, "concat", [a, b, c], r)
a.put(av)
b.put(bv)
c.put(cv)
sys.getSimulator().clk(1)
assert (r.get() == 0x5F37D1)
def test_msbf_3(self):
sys = py4hw.HWSystem()
a = sys.wire("a", 1)
b = sys.wire("b", 8)
c = sys.wire("c", 23)
r = sys.wire("r", 32)
av = 0
bv = 127
cv = 2516585
ev = (127 << 23) | cv
py4hw.ConcatenateMSBF(sys, "concat", [a, b, c], r)
a.put(av)
b.put(bv)
c.put(cv)
sys.getSimulator().clk(1)
assert (r.get() == ev)
def test_2(self):
sys = py4hw.HWSystem()
a = sys.wire("a", 5)
b = sys.wire("b", 7)
c = sys.wire("c", 11)
r = sys.wire("r", 32)
av = 11
bv = 23
cv = 111
ev = (((av << 7) | bv) << 11) | cv
py4hw.ConcatenateMSBF(sys, "concat", [a, b, c], r)
a.put(av)
b.put(bv)
c.put(cv)
sys.getSimulator().clk(1)
assert (r.get() == ev)