Achronix ACE Version 5.0 - Manual (Page 376)

set impl option Chapter 5. Tcl Command Reference
Argument Required/Optional Description
clock Required Specify clock domain
[-xp < arg > ] Optional Extra pipelining amount (>=0)
[-cdc < arg > ] Optional Extra pipelining added at each
crossing from another
(unrelated) domain into this
domain
Note: If this command is executed after run prepare (the Run Prepare flow step), the
apply extra pipeline command must be run as well to apply the changes. See
apply extra pipeline for more information.
set false path
set false path [-from < args > ] [-to < args > ]
Define a false path exception (this declares that the clocks are unrelated)
Argument Required/Optional Description
[-from < args > ] Optional from list (one or more clocks)
[-to < args > ] Optional to list (one or more clocks)
This command specifies the clocks are unrelated (if the design has multiple clock lines). Before using this
command user must need to know about the clock relationship in the design. If this command is inferred
in ACE during back-end Place-&-Route, ACE will automatically understand the relationship between the
clock lines. Below is the command syntax for the user how to infer inside the SDC file or ACE tool:
set_false_path -from <clock1> -to <clock2>
set_false_path -from <clock2> -to <clock1>
set flyline direction
set flyline direction < direction >
This command is used to control whether selected instance flylines are shown for loads of the selected
instance, drivers, or both.
Argument Required/Optional Description
< direction > Required The required <direction>
argument specifies whether
selected instance flylines are
shown for loads of the selected
instance, drivers, or both. Valid
values are loads only,
drivers only, both and all
set impl option
set impl option < option name > < value > [-project < arg > ] [-impl < arg > ]
This command sets options for a project implementation. Only one option may be set at a time.
UG001 Rev. 5.0 - 5th December 2012 http://www.achronix.com 364