Achronix ACE Version 5.0 - Manual (Page 310)

Placement Regions and Placement Region Constraints Chapter 4. Tasks
7. Fill in the desired Placement Region name
8. Select whether the Placement Region should be based upon the simpler Clock Regions, or the more
granular subtiles.
9. Press the ”Finish” button to create the new Placement Region.
10. ACE adds the new Placement Region to the table in the Placement Regions view and displays it as a
translucent overlay within the Floorplanner. (At this point, the region will contain no constraints.)
Resizing an existing placement region
Existing Placement Regions may be resized with the Tcl command set region bounds , or with the mouse
in the Floorplanner view. Any existing Placement Region Constraints for that region will be kept - only the
enclosed area will be updated.
To resize a Placement Region with the mouse in the Floorplanner:
1. Ensure the Floorplanner’s Placement Region Tool ( ) is active.
2. In the Placement Regions view, ensure the checkbox in the first column is selected for the desired
Placement Region. This will make the Placement Region overlay visible within the Floorplanner view.
3. Ensure the ”Snap To” option in the Placement Regions Preference Page is configured as desired.
4. (Optional) If the Placement Region is meant to align with (snap to) one or more Clock Regions , enable
the overlay for those regions from the Clock Regions view . This will not affect the functionality during
the resize in any way, but will make it easier to know where to define the region bounds.
5. Move the mouse over either the upper-left corner or the lower-right corner of the placement region to
be resized. The mouse cursor will change to a diagonal resize cursor when the mouse is in a potential
resize location.
6. Press and hold the left mouse button and drag the mouse to expand or shrink the Placement Region
area as desired.
7. Release the left mouse button when the mouse is at the desired location.
8. ACE calculates the enclosed subtile grid coordinates, growing as necessary to ensure all partially-
enclosed subtiles (or Clock Regions) are fully enclosed.
9. The Placement Region View’s table content is updated to show the new site counts enclosed by the
Placement Region, and the Floorplanner is updated to show the new Placement Region overlay.
Moving an existing placement region
Existing Placement Regions may be moved with the Tcl command set region bounds , or with the mouse
in the Floorplanner view. Any existing Placement Region Constraints for that region will be kept - only the
enclosed area will be updated. Be aware that the ”snap to” setting is enforced during the move the enclosed
area may not stay the same dimensions after the move. As with creating/resizing a region, the area will
grow to ensure there are no partial sites in the enclosed area. Users will frequently desire to resize (shrink)
the Placement Region after a move, as it can easily grow larger than expected if sites/Clock Regions were
partially enclosed at the ending mouse location.
To move a Placement Region with the mouse in the Floorplanner:
1. Ensure the Floorplanner’s Placement Region Tool ( ) is active.
2. In the Placement Regions view, ensure the checkbox in the first column is selected for the desired
Placement Region. This will make the Placement Region visible within the Floorplanner view.
3. Ensure the ”Snap To” option in the Placement Regions Preference Page is configured as desired.
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