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Ixiasoft
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Ixiasoft
4.3.2. Placement Constraints
The following table compares the most common Xilinx* placement constraints with the Intel® FPGA equivalent placement constraints:
Xilinx* Constraint | Intel® FPGA Constraint | Description | |
---|---|---|---|
Assignment Name | QSF Variable | ||
PBLOCK | Logic Lock Region | CORE_ONLY_PLACE_REGION | Specifies whether the placement region only applies to core logic. |
FLOATING_REGION | Specifies the type of floating region | ||
PLACE_REGION | Specifies the target and bounding boxes of a placement region | ||
REGION_NAME | Specifies the region name of a design instance. | ||
RESERVE_PLACE_REGION | Specifies whether the placement region prevents the Fitter from placing other logic in that region. | ||
ROUTE_REGION | Specifies the target and bounding boxes of a routing region. | ||
PACKAGE_PIN <Pin Number> | Location Assignment | PIN_<Pin number> | Assigns a location on the device for the current nodes or pins. |
LOC (for primitive cell such as SLICE, RAMB) | Location Assignment | <Location> <Value> | Assigns a location on the device for the current nodes or pins. |
BEL (for registers, LUT, SRL, LUTRAM) | Location Assignment | <Location> <Value> | Assigns a location on the device for the current nodes or pins. |
PROHIBIT | NA | NA | NA |
To set or modify placement constraints, use the Intel® Quartus® Prime Assignment Editor. Alternatively, you can edit the .qsf file.