Virtuoso AMS Environment User Guide

Variables for ams.env Files

cdsGlobalsView

Specifies the view for thecds_globals module created by AMS Design Prep.

Syntax

amsDirect.prep cdsGlobalsView string "view_name"

Description

AMS Design Prep automatically generates the cds_globals module that contains the global signals. The cell name for the module is always cds_globals, but you can use this variable to specify the view name to be used.

Example

amsDirect.prep cdsGlobalsLib string "myglobelib" amsDirect.prep cdsGlobalsView string "globeview”

Tell AMS Design Prep to store the cds_globals module in the myglobelib library, in the cds_globals cell, and to use a view name of globeview. (For information about cdsGlobalsLib, see “cdsGlobalsLib” on page 391.)

Virtuoso AMS Environment User Guide

Variables for ams.env Files

checkAndNetlist

Checks cellview data for Verilog-AMS compatibility and generates a Verilog-AMS netlist if no errors are found.

Syntax

amsDirect.vlog checkAndNetlist boolean t | nil

Description

You can use this variable to create error-dependent netlists in Verilog-AMS. The checkAndNetlist variable takes precedence over the checkOnly variable.

Example

amsDirect.vlog checkOnly boolean nil amsDirect.vlog checkAndNetlist boolean t

Tell the AMS netlister to generate a Verilog-AMS netlist for the cellview if there are no errors. In this example, the nil value for the checkOnly variable is ignored because the t value for the checkAndNetlist variable takes precedence.

Virtuoso AMS Environment User Guide

Variables for ams.env Files

checkOnly

Checks cellview data for Verilog-AMS compatibility without generating a Verilog-AMS netlist.

Syntax

amsDirect.vlog checkOnly boolean t | nil

Description

You can use this variable to check cellviews in Verilog-AMS. The checkAndNetlist variable takes precedence over the checkOnly variable.

Example

amsDirect.vlog checkOnly boolean t

Tells the AMS netlister to check a cellview for Verilog-AMS compliance but not to create a netlist for the cellview.

Virtuoso AMS Environment User Guide

Variables for ams.env Files

checktasks

Checks for the presence of non-predefined system tasks or functions in the source code.

Syntax

amsDirect.vlog checktasks boolean t | nil

Example

amsDirect.vlog checktasks boolean t

Tells AMS Design Prep to compile Verilog files with the-checktasks option. As a result, the generated command might look like this.

ncvlog -checktasks