Altera® Quartus® Prime Standard Edition Settings File Reference Manual

ID 683084
Date 5/08/2017
Public
Document Table of Contents

1.2.133. SHIFT_REGISTER_RECOGNITION_ACLR_SIGNAL

Allows the Compiler to find a group of shift registers of the same length that can be replaced with the altshift_taps megafunction. The shift registers must all use the same aclr signals, must not have any other secondary signals, and must have equally spaced taps that are at least three registers apart. To use this option, you must turn on the Auto Shift Register Replacement logic option.

Type

Boolean

Device Support

This setting can be used in projects targeting any Altera device family.

Notes

This assignment is included in the Analysis & Synthesis report.

This assignment supports synthesis wildcards.

Syntax


		set_global_assignment -name SHIFT_REGISTER_RECOGNITION_ACLR_SIGNAL <value>
		set_global_assignment -name SHIFT_REGISTER_RECOGNITION_ACLR_SIGNAL -entity <entity name> <value>
		set_instance_assignment -name SHIFT_REGISTER_RECOGNITION_ACLR_SIGNAL -to <to> -entity <entity name> <value>
	

Default Value

On

Example


		set_global_assignment -name shift_register_recognition_aclr_signal off
		set_instance_assignment -name shift_register_recognition_aclr_signal off -to foo