Primitives Management

New primitives library can be added. The primitives library is a python script.

import snl

# define a combinatorial AND2 Primitive with:
# - 2 scalar inputs: I0 and I1
# - 1 scalar output: O
def constructAND2(lib):
  and2 = snl.SNLDesign.createPrimitive(lib, "AND2")
  i0 = snl.SNLScalarTerm.create(and2, snl.SNLTerm.Direction.Input, "I0")
  i1 = snl.SNLScalarTerm.create(and2, snl.SNLTerm.Direction.Input, "I1")
  o = snl.SNLScalarTerm.create(and2, snl.SNLTerm.Direction.Output, "O")
  snl.SNLDesign.addCombinatorialArcs([i0, i1], o)

# define a sequential FD Primitive with:
# - 1 scalar input: D, 1 scalar clock input: C
# - 1 scalar output: Q
# - 1 a binary parameter "MASK" of size 1 with default value "0b0"
def constructFD(lib):
  fd = snl.SNLDesign.createPrimitive(lib, "FD")
  q = snl.SNLScalarTerm.create(fd, snl.SNLTerm.Direction.Output, "Q")
  c = snl.SNLScalarTerm.create(fd, snl.SNLTerm.Direction.Input, "C")
  d = snl.SNLScalarTerm.create(fd, snl.SNLTerm.Direction.Input, "D")
  snl.SNLParameter.create_binary(fd, "MASK", 1, 0b0)
  snl.SNLDesign.addInputsToClockArcs(d, c)
  snl.SNLDesign.addClockToOutputsArcs(c, q)

#The "primitives" script needs to define a constructPrimitives function
# taking a primitives library to construct.
def constructPrimitives(lib):
  constructAND2(lib)
  constructREG(lib)