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(parent: cfa3753) | patch
coolrunner2: Add an ANDTERM/XOR between chained FFs
authorRobert Ou <rqou@robertou.com>
Sat, 31 Mar 2018 10:54:48 +0000 (03:54 -0700)
committerRobert Ou <rqou@robertou.com>
Sat, 31 Mar 2018 10:54:48 +0000 (03:54 -0700)
commit14e49fb05737cfb02217b2aaf14d9f5d9e1859da
tree14569db0d55a8adfb3b47853f88395613b3a8222tree
parentcfa3753b89c684b66e2cb164226a3358493e5232commit | diff
coolrunner2: Add an ANDTERM/XOR between chained FFs

In some cases (e.g. the low bits of counters) the design might end up
with a flip-flop whose input is directly driven by another flip-flop.
This isn't possible in the Coolrunner-II architecture, so add a single
AND term and XOR in this case.
techlibs/coolrunner2/coolrunner2_sop.cc diff | blob | history