read

Specifies the name of the constraint file containing the constraints to use.

read [ -eco] [ -initial] file ;

Arguments

-eco

Specifies that the constraint file is to be read in eco (engineering change order) mode. In this mode, no errors will be reported when certain nets or instances are not found in the design. Instead a warning is generated.

-initial

Specifies that the constraint file is to be read in initial mode. In this mode, all fixed location statements will be interpreted as initial locations instead.

file (required)

The name of the constraint file, surrounded by double quotes.

Supported Families

ProASIC PLUS and ProASIC

Description

A constraint file can contain multiple read statements. For example, you can put pin assignments in one file, optimization constraints in another, placement constraints in yet another, and read them all in through a master constraint file.

Exceptions

None

Examples

The following example instruct the Designer software to use constraints from the GCF files pinmap.gcf and decoder.gcf. A full path specification is given for pinmap.gcf. The file decoder.gcf has no path specification and is assumed to be in the design working directory.

read "/net/aries/designs/pinmap.gcf";