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authorEddie Hung <eddie@fpgeh.com>2019-06-22 14:28:24 -0700
committerEddie Hung <eddie@fpgeh.com>2019-06-22 14:28:24 -0700
commit792d0670c3bfe5af7946c6deb0df4656b820d195 (patch)
treef93b069221e126d348f0c28e4bad76619095a84a /techlibs/xilinx/abc_xc7.box
parent63182ed57d3a62c8c5e316cea48216024afb38a4 (diff)
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Add comment to xc7 box
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-rw-r--r--techlibs/xilinx/abc_xc7.box3
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diff --git a/techlibs/xilinx/abc_xc7.box b/techlibs/xilinx/abc_xc7.box
index 0a6a6eaf0..b5817a6e0 100644
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@@ -1,5 +1,8 @@
# Max delays from https://github.com/SymbiFlow/prjxray-db/blob/34ea6eb08a63d21ec16264ad37a0a7b142ff6031/artix7/timings/CLBLL_L.sdf
+# NB: Inputs/Outputs must be ordered alphabetically
+# (with exceptions for carry in/out)
+
# F7BMUX slower than F7AMUX
# Inputs: I0 I1 S0
# Outputs: O