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Development System Reference Guide www.xilinx.com 159
R
Chapter 9
PAR
The Place and Route (PAR) program is compatible with the following families:
• Virtex
™
, Virtex
™
-E
• Virtex
™
-II
• Virtex
™
-II Pro, Virtex
™
-II Pro X
• Virtex
™
-4
• Virtex
™
-5 LX
• Spartan
™
-II, Spartan
™
-IIE
• Spartan
™
-3, Spartan
™
-3E, Spartan
™
-3L
The chapter contains the following sections:
• “Place and Route Overview”
• “PAR Process”
• “Guided PAR”
• “PAR Syntax”
• “PAR Input Files”
• “PAR Output Files”
• “PAR Options”
• “PAR Reports”
• “Multi Pass Place and Route (MPPR)”
• “Xplorer”
• “ReportGen”
• “Turns Engine (PAR Multi-Tasking Option)”
• “Halting PAR”
Place and Route Overview
After you create a Native Circuit Description (NCD) file with the MAP program, you can
place and route that design file using PAR. PAR accepts a mapped NCD file as input,
places and routes the design, and outputs an NCD file to be used by the bitstream
generator (BitGen). See Chapter 14, “BitGen”.
The NCD file output by PAR can also be used as a guide file for additional runs of PAR
that may be done after making minor changes to your design. See the “Guided PAR”
section of this chapter for more information on using guide files.