Xilinx 8.2i manual 2Part Number Examples Specification

Models: 8.2i

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Command Line Options

–p (Part Number)

You can use the –p option with the EDIF2NGD, NGDBuild, MAP, and XFLOW programs to specify the part into which your design will be implemented. You can specify a part number at the following different points in the design flow:

In the input netlist (does not require the –p option)

In a Netlist Constraints File (NCF) (does not require the –p option)

With the –p option when you run a netlist reader (EDIF2NGD) User Constraints File (UCF) (does not require the –p option)

With the –p option when you run NGDBuild

By the time you run NGDBuild, you must have already specified a device architecture.

With the –p option when you run MAP

When you run MAP, an architecture, device, and package must be specified, either on the MAP command line or earlier in the design flow. If you do not specify a speed, MAP selects a default speed. You can only run MAP using a part number from the architecture you specified when you ran NGDBuild.

Note: Part numbers specified in a later step of the design flow override a part number specified in an earlier step. For example, a part specified when you run MAP overrides a part specified in the input netlist.

A complete Xilinx part number consists of the following elements:

Architecture (for example, Spartan-3e)

Device (for example, xc3s100e)

Package (for example, vq100)

Speed (for example, -4)

Note: The Speedprint program lists block delays for device speed grades. The -s option allows you to specify a speed grade. If you do not specify a speed grade, Speedprint reports the default speed grade for the device you are targeting. See “–s (Speed Grade)” in Chapter 13 for details.

The following table lists multiple ways to specify a part on the command line.

Table 1-2:Part Number Examples

Specification

Examples

 

 

Architecture only

virtex

 

virtex2

 

virtex2p

 

virtex4

 

spartan2

 

spartan2e

 

spartan 3

 

spartan 3e

 

xc9500

 

xpla3

 

 

Device only

xc4vfx12

 

xc3s100e

 

 

Development System Reference Guide

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Xilinx 8.2i manual 2Part Number Examples Specification