+class SetLessThan:
+ def __init__(self, width, signed):
+ self.src1 = Signal((width, signed))
+ self.src2 = Signal((width, signed))
+ self.output = Signal(width)
+
+ def elaborate(self, platform):
+ m = Module()
+ m.d.comb += self.output.eq(Mux(self.src1 < self.src2, 1, 0))
+ return m
+
+
+class LTStage:
+ def __init__(self):
+ self.slt = SetLessThan(16, True)
+
+ def ispec(self):
+ return (Signal(16), Signal(16))
+
+ def ospec(self):
+ return Signal(16)
+
+ def setup(self, m, i):
+ self.o = Signal(16)
+ m.submodules.slt = self.slt
+ m.d.comb += self.slt.src1.eq(i[0])
+ m.d.comb += self.slt.src2.eq(i[1])
+ m.d.comb += self.o.eq(self.slt.output)
+
+ def process(self, i):
+ return self.o
+
+
+class ExampleLTCombPipe(CombPipe):
+ """ an example of how to use the combinatorial pipeline.
+ """
+
+ def __init__(self):
+ stage = LTStage()
+ CombPipe.__init__(self, stage)
+
+
+def test6_resultfn(o_data, expected, i, o):
+ res = 1 if expected[0] < expected[1] else 0
+ assert o_data == res, \
+ "%d-%d data %x not match %s\n" \
+ % (i, o, o_data, repr(expected))
+
+
+num_tests = 1000