Intel® Quartus® Prime Standard Edition User Guide: Design Optimization

ID 683230
Date 11/12/2018
Public
Document Table of Contents

7.5.1.3. Sum and Carry Equations

You can change the logic function implemented by the LUT by changing the sum and carry equations. When the LE is configured in normal mode, you can change only the sum equation. When the LE is configured in arithmetic mode, you can change both the sum and the carry equations.

The LUT mask is the hexadecimal representation of the LUT equation output. When you change the LUT equation, the Intel® Quartus® Prime software automatically changes the LUT mask. Conversely, when you change the LUT mask, the Intel® Quartus® Prime software automatically computes the LUT equation.

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