Achronix ACE Version 5.0 Manual do Utilizador Página 198

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Dialogs Chapter 3. Concepts
Use Default
Location
Enabled
Selects whether the default I/O placement file path is
used, or the one manually specified below the option.
Save Core Placement
Enabled
This option indicates whether placement of instances in
the core fabric should be saved.
Core Placement File
Use Default
Location
Enabled
Selects whether the default core placement file path is
used, or the one specified below the option.
Automatically Add to Project
Enabled
This option controls whether the output placement files
are automatically added to the current project as
pre-placement constraints files.
Output Region Constraints
Enabled
Controls whether placement region constraints are
exported to the PDC file.
Save Fixed Placement Only
Enabled
This option controls whether only the current fixed
placement constraints are saved to the output files. If
set, all other placement information (such as that
generated by the placer) are ignored.
14
IO Buffer Instances
Use Design
Port Names
Selects whether the placement file uses I/O buffer
names based on port names of the HDL source, or
instance names generated during synthesis.
IO Buffer Sites
Use Ball
Names
Enabled
This option controls the output format of the site names
for I/O buffers. Selecting this option outputs the
package ball name instead of the site name on the
device.
Use Device
Port Names
Disabled
This option controls the output format of the site names
for I/O buffers. Selecting this option outputs the
top-level device port name instead of the site name on
the device.
Use Site
Names
Disabled
This option controls the output format of the site names
for I/O buffers. Selecting this option outputs site name
on the device.
14
It is recommended to always use this option when saving pre-placement constraints.
UG001 Rev. 5.0 - 5th December 2012 http://www.achronix.com 186
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