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base repository: m-labs/nmigen
base: f18c1d446e0a^
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head repository: m-labs/nmigen
compare: 9df4335721e9
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  • 3 commits
  • 3 files changed
  • 1 contributor

Commits on Jun 15, 2019

  1. vendor.xilinx_{7series,spartan6}: connect FCDE and IOB directly. 

    Before this commit, in some cases there will be an inverter, which is
not allowed on an FDCE with IOB attribute set to true, as it will
interfere with packing.
    whitequark committed Jun 15, 2019
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  2. vendor.xilinx_{7series,spartan6}: cleanup. NFC. 

    Eliminate some intermediate signals if they are not necessary.
Do not even return i, o, or t if the pin does not have them.
    whitequark committed Jun 15, 2019
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  3. vendor.xilinx_{7series,spartan6}: emit IBUF/OBUF explicitly. 

    Do this to make sure all buffers, tristate/differential or not, are
instantiated the exact same way, and are subject to the same set of
toolchain bugs, if any.
    whitequark committed Jun 15, 2019
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