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| -rw-r--r-- | doc/using/InvokingGHDL.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/using/InvokingGHDL.rst b/doc/using/InvokingGHDL.rst index 808e26013..918acacfd 100644 --- a/doc/using/InvokingGHDL.rst +++ b/doc/using/InvokingGHDL.rst @@ -371,6 +371,18 @@ Options All the commands that perform a link (:option:`-e`, :option:`--elab-run`, :option:`--link`, :option:`-c`, :option:`-m`, etc.) support overriding the location and name of the generated artifact. +.. option:: --time-resolution=<UNIT> + + Set the base time resolution of the simulation. This option is supported in commands :option:`-a` and :option:`-r` only. + Allowed values are ``auto`` (default with *mcode*), ``fs`` (default with LLVM/GCC), ``ps``, ``ns``, ``us``, ``ms`` or ``sec``. + + .. HINT:: + When overriding the time resolution, all the time units that are used in the design must be larger. Using units below + the resolution will produce a failure. + + .. ATTENTION:: + This feature is supported with *mcode* backend only. It is not possible to support it with either LLVM or GCC backends, + because it needs to apply globally. Warnings ======== |