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| author | gatecat <gatecat@ds0.me> | 2021-12-19 18:46:10 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-12-19 18:46:10 +0000 |
| commit | 62a3e093856063180526b7189d5e711a98036fa0 (patch) | |
| tree | d03ba5688367cb476a06b19d04ca78d0352afce3 /docs/coding.md | |
| parent | 56d550733346000584b9490fac0953fe07124035 (diff) | |
| parent | ddb084e9a8a0cba10536951236cde824526e8071 (diff) | |
| download | nextpnr-62a3e093856063180526b7189d5e711a98036fa0.tar.gz nextpnr-62a3e093856063180526b7189d5e711a98036fa0.tar.bz2 nextpnr-62a3e093856063180526b7189d5e711a98036fa0.zip | |
Merge pull request #883 from YosysHQ/gatecat/new-predictdelay
archapi: Use arbitrary rather than actual placement in predictDelay [breaking change]
Diffstat (limited to 'docs/coding.md')
| -rw-r--r-- | docs/coding.md | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/docs/coding.md b/docs/coding.md index dc09bb3f..db2ec079 100644 --- a/docs/coding.md +++ b/docs/coding.md @@ -80,7 +80,7 @@ As nextpnr allows arbitrary constraints on bels for more advanced packer-free fl There are several routes for timing information in the placer: - sink `PortRef`s have a `budget` value annotated by calling `assign_budget` which is an estimate of the maximum delay that an arc may have - sink ports can have a criticality (value between 0 and 1 where 1 is the critical path) associated with them by using `get_criticalities` and a `NetCriticalityMap` - - `predictDelay` returns an estimated delay for a sink port based on placement information + - `predictDelay` and its derivative `predictArcDelay` returns an estimated delay for a sink port based on placement information ### Bel Buckets |