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10 Commits

Author SHA1 Message Date
Marcelina Kościelnicka aee439360b Add force_downto and force_upto wire attributes. 
Fixes #2058.
 2020-05-19 01:42:40 +02:00
Marcin Kościelnicki d48950d92d xilinx: Initial support for LUT4 devices. 
Adds support for mapping logic, including LUTs, wide LUTs, and carry
chains.

Fixes #1547
 2020-02-07 09:03:22 +01:00
Eddie Hung d625e399cb Fix $lcu -> MUXCY mapping, credit @mwkmwkmwk 2020-02-06 11:25:07 -08:00
Eddie Hung 5ecbc6c7b2 Fix/cleanup +/xilinx/arith_map.v 2020-02-06 11:00:04 -08:00
Eddie Hung 5c589244df Deprecate `_CLB_CARRY from +/xilinx/arith_map.v since #1623 2020-01-17 12:02:46 -08:00
Eddie Hung 1e6d56dca1 +/xilinx/arith_map.v fix $lcu rule 2020-01-17 11:28:37 -08:00
Eddie Hung ee8435b820 Instead of MUXCY/XORCY use CARRY4 (with timing) 2019-05-21 16:19:45 -07:00
Keith Rothman 3090951d54 Changes required for VPR place and route synth_xilinx. 
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2019-03-01 12:02:27 -08:00
Clifford Wolf 6c84341f22 Fixed trailing whitespaces 2015-07-02 11:14:30 +02:00
Clifford Wolf d29d26f882 Various cleanups in xilinx techlib 2015-01-18 19:43:54 +01:00