Version 5.6 (R2008a) Simulink® Fixed Point™ Software Release Notes

Version 5.6 (R2008a) Simulink^® Fixed Point™ Software

This table summarizes what's new in Version 5.6 (R2008a):

New features and changes introduced in this version are

• Enhanced Fixed-Point Tool

• New Fixed-Point Advisor

• Fixed-Point Enhancements in Simulink^® Blocks

Enhanced Fixed-Point Tool

This release introduces the following enhancements to the Fixed-Point Tool:

• In previous releases, you access the Fixed-Point Tool by selecting Fixed-Point Settings from the Simulink^® Tools menu. To display the Fixed-Point Tool in this release, from a model's Tools menu, select Fixed-Point > Fixed-Point Tool. See Opening the Fixed-Point Tool for more information.

• In this release, the Fixed-Point Tool incorporates design minimum and maximum values in its automatic scaling procedure. Typically, you use a model object's Output minimum and Output maximum parameters to specify this design range. The tool's Contents pane displays these values in new columns titled DesignMin and DesignMax. See Proposing Scaling for more information.

• The Fixed-Point Tool provides a new Autoscale Information dialog box. For each model object, this dialog summarizes data type details and explains the tool's scaling proposal. See Reviewing Scaling Proposals for more information.

See Fixed-Point Tool in the Simulink^® Fixed Point™ User's Guide for more information about working with the tool.

New Fixed-Point Advisor

The Fixed-Point Advisor is a new interactive tool you can use to facilitate converting a floating-point model or subsystem to an equivalent fixed-point representation. You can use the Fixed-Point Advisor to prepare a model for conversion and obtain an initial scaling to use as the starting point for refinement and exploration inside the Fixed-Point Tool. For more information, see Fixed-Point Advisor in the Simulink^® Fixed Point™ documentation.

Fixed-Point Enhancements in Simulink^® Blocks

This section describes enhancements to fixed-point data type support in Simulink blocks.

Lookup Table (n-D) Block

The Lookup Table (n-D) block now supports fixed-point data types.

Sum Block

The Sum block provides a new parameter for specifying the data type of its accumulator. You can now specify its accumulator data type as any data type that Simulink supports, including fixed-point data types.

Simulink® Fixed Point™ Release Notes

Version 5.5 (R2007b) Simulink® Fixed Point™ Software