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7 Commits

Author SHA1 Message Date
Robert Ou 14e49fb057 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.
 2018-03-31 03:54:48 -07:00
Robert Ou 5f65e24ccb coolrunner2: Finish fixing special-use p-terms 2017-09-01 07:22:16 -07:00
Robert Ou fa04366f38 coolrunner2: Generate a feed-through AND term when necessary 2017-09-01 07:22:01 -07:00
Robert Ou 6775177171 coolrunner2: Initial fixes for special p-terms 
Certain signals can only be controlled by a product term and not a
sum-of-products. Do the initial work for fixing this.
 2017-09-01 07:21:51 -07:00
Robert Ou ac84f47829 coolrunner2: Combine some for loops together 2017-09-01 07:21:31 -07:00
Clifford Wolf 621787a9e0 Fix some c++ clang compiler errors 2017-07-03 19:38:30 +02:00
Clifford Wolf 5c1c126374 Apply minor coding style changes to coolrunner2 target 2017-07-03 19:35:40 +02:00