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yosys
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448 Commits

Author SHA1 Message Date
Andrew Zonenberg 122532b7e1 Added RESET_TO_MAX parameter to $__COUNT_ cell. Cannot yet be extracted. 2017-09-14 10:26:32 -07:00
Andrew Zonenberg a84172b23b Initial support for extraction of counters with clock enable 2017-09-14 10:26:10 -07:00
Clifford Wolf 2f75240e36 Merge pull request #406 from azonenberg/coolrunner-techmap 
Coolrunner techmapping improvements
 2017-09-02 13:43:51 +02:00
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 7f08be4304 coolrunner2: Fix mapping of flip-flops 2017-09-01 07:21:39 -07:00
Robert Ou ac84f47829 coolrunner2: Combine some for loops together 2017-09-01 07:21:31 -07:00
Andrew Zonenberg 40021d2fd8 Fixed typo in error message 2017-09-01 06:45:10 -07:00
Andrew Zonenberg fc0c7f74dc Added blackbox $__COUNT_ cell model 2017-09-01 06:44:28 -07:00
Andrew Zonenberg 80aaf50302 Refactoring: moved modules still in cells_sim to cells_sim_wip 2017-09-01 06:44:15 -07:00
Andrew Zonenberg 06754108fc Merge branch 'master' of https://github.com/cliffordwolf/yosys into counter-extraction 2017-08-30 16:40:41 -07:00
Andrew Zonenberg 634f18be96 extract_counter: Minor changes requested to comply with upstream policy, fixed a few typos 2017-08-30 16:28:25 -07:00
Andrew Zonenberg 3fc1b9f3fd Finished refactoring counter extraction to be nice and generic. Implemented techmapping from $__COUNT_ to GP_COUNTx cells. 2017-08-28 22:18:57 -07:00
Andrew Zonenberg b5c15636c5 Refactoring: Renamed greenpak4_counters pass to extract_counter, moved it to techmap/ since it's going to become a generic pass 2017-08-28 22:18:34 -07:00
Andrew Zonenberg c3145863e7 Reformatted GP_COUNTx_ADV resets to avoid Yosys thinking that they're multi-edge-sensitive and getting confused. 2017-08-28 14:25:46 -07:00
Andrew Zonenberg e62362225c Fixed bug causing GP_SPI model to not synthesize 2017-08-27 07:31:48 -07:00
Andrew Zonenberg e6eaf487b6 Fixed more issues with GreenPAK counter sim models 2017-08-15 09:18:36 -07:00
Andrew Zonenberg 3a404be62a Updated PGEN model to have level triggered reset (matches actual hardware behavior 2017-08-15 09:18:27 -07:00
Andrew Zonenberg e5109847c9 Fixed bug in GP_COUNTx model 2017-08-15 09:18:17 -07:00
Andrew Zonenberg 66b256d40e Fixed bug where GP_COUNTx_ADV would wrap even when KEEP was high 2017-08-15 09:18:07 -07:00
Clifford Wolf 2cf0b5c157 Merge pull request #381 from azonenberg/countfix 
Added better behavioral models for GreenPAK counters. Refactored cells_sim into two files so analog/mixed signal stuff is separate
 2017-08-14 21:47:26 +02:00
Robert Ou 78fd24f40f coolrunner2: Add INVERT parameter to some BUFGs 2017-08-14 12:13:33 -07:00
Robert Ou 1e3ffd57cb coolrunner2: Add FFs with clock enable to cells_sim.v 2017-08-14 12:13:25 -07:00
Andrew Zonenberg 348acbd968 Fixed typo in GP_COUNT8 sim model 2017-08-14 10:45:40 -07:00
Andrew Zonenberg c205d571df Fixed typo in error message 2017-08-14 10:45:40 -07:00
Andrew Zonenberg 0a6c702c41 Changed LEVEL resets for GP_COUNTx to be properly synthesizeable 2017-08-14 10:45:40 -07:00
Andrew Zonenberg 9f3dc59ffe Changed LEVEL resets to be edge triggered anyway 2017-08-14 10:45:40 -07:00
Andrew Zonenberg b049ead042 Added level-triggered reset support to GP_COUNTx simulation models 2017-08-14 10:45:40 -07:00
Andrew Zonenberg ac75524f69 Fixed undeclared "count" in GP_COUNT8_ADV 2017-08-14 10:45:39 -07:00
Andrew Zonenberg db20e3f1c2 Fixed undeclared "count" in GP_COUNT14_ADV 2017-08-14 10:45:39 -07:00
Andrew Zonenberg 3618ca2218 Fixed typo in last commit 2017-08-14 10:45:39 -07:00
Andrew Zonenberg 4da1a327c0 Finished initial GP_COUNT8/14/8_ADV/14_ADV sim models. Don't support clock divide, but do everything else. 2017-08-14 10:45:39 -07:00
Andrew Zonenberg 4504dd78e9 Fixed typo in COUNT8 model 2017-08-14 10:45:39 -07:00
Andrew Zonenberg 60dd5dba7b Moved GP_POR out of digital cells b/c it has delays 2017-08-14 10:45:39 -07:00
Andrew Zonenberg f55d4cc2fd Improved cells_sim_digital model for GP_COUNT8 2017-08-14 10:45:39 -07:00
Andrew Zonenberg fe3a932cfa Refactored GreenPAK4 cells_sim into cells_sim_ams and cells_sim_digital 2017-08-14 10:45:39 -07:00
Clifford Wolf 8a69759306 Add techlibs/xilinx/lut2lut.v 2017-07-10 12:09:05 +02:00
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
Clifford Wolf 6afee022ad Merge pull request #352 from rqou/master 
Initial Coolrunner-II support
 2017-07-03 19:33:36 +02:00
Robert Ou b102c0e254 coolrunner2: Add a few more primitives 
These cannot be inferred yet, but add them to cells_sim.v for now
 2017-06-25 23:58:28 -07:00
Robert Ou 36b75dfcb7 coolrunner2: Initial mapping of latches 2017-06-25 23:58:28 -07:00
Robert Ou 4af5baab21 coolrunner2: Initial mapping of DFFs 
All DFFs map to either FDCP (matches Xilinx) or a custom FDCP_N
(negative-edge triggered)
 2017-06-25 23:58:28 -07:00
Robert Ou 1eb5dee799 coolrunner2: Remove redundant INVERT_PTC 2017-06-25 23:58:28 -07:00
Robert Ou ffff001008 coolrunner2: Remove debug prints 2017-06-25 23:58:28 -07:00
Robert Ou 5798105d47 coolrunner2: Correctly handle $_NOT_ after $sop 2017-06-25 23:58:28 -07:00
Robert Ou 908ce3fdce coolrunner2: Also construct the XOR cell in the macrocell 2017-06-25 23:58:28 -07:00
Robert Ou a64b56648d coolrunner2: Initial techmapping for $sop 2017-06-25 23:58:22 -07:00
Andrew Zonenberg cbdddc3af9 greenpak4_counters: Changed generation of primitive names so that the absorbed register's name is included 2017-06-24 14:54:07 -07:00