| Commit message (Collapse) | Author | Age | Files | Lines | |
|---|---|---|---|---|---|
| * | Add $aldff and $aldffe: flip-flops with async load. | Marcelina Kościelnicka | 2021-10-02 | 1 | -0/+49 |
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| * | simcells: Fix reset polarity for $_DLATCH_???_ cells. | Marcelina Kościelnicka | 2020-06-30 | 1 | -1/+1 |
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| * | Add new builtin FF types | Marcelina Kościelnicka | 2020-06-23 | 1 | -0/+153 |
| | | | | | | | | | | | | | | | The new types include: - FFs with async reset and enable (`$adffe`, `$_DFFE_[NP][NP][01][NP]_`) - FFs with sync reset (`$sdff`, `$_SDFF_[NP][NP][01]_`) - FFs with sync reset and enable, reset priority (`$sdffs`, `$_SDFFE_[NP][NP][01][NP]_`) - FFs with sync reset and enable, enable priority (`$sdffce`, `$_SDFFCE_[NP][NP][01][NP]_`) - FFs with async reset, set, and enable (`$dffsre`, `$_DFFSRE_[NP][NP][NP][NP]_`) - latches with reset or set (`$adlatch`, `$_DLATCH_[NP][NP][01]_`) The new FF types are not actually used anywhere yet (this is left for future commits). | ||||
| * | Fix the truth table for $_SR_* cells. | Marcelina Kościelnicka | 2020-04-15 | 1 | -5/+4 |
| | | | | | | | | | This brings the documented behavior for these cells in line with $_DFFSR_* and $_DLATCHSR_*, which is that R has priority over S. The models were already reflecting that behavior. Also get rid of sim-synth mismatch in the models while we're at it. | ||||
| * | simcells.v: Generate the fine FF cell types by a python script. | Marcin Kościelnicki | 2020-04-02 | 1 | -0/+239 |
| This makes adding more FF types in the future much more manageable. Fixes #1824. | |||||
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index : iCE40/yosys | |
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