Altera® Quartus® Prime Standard Edition Settings File Reference Manual

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

1.2.137. STRATIXII_CARRY_CHAIN_LENGTH

Specifies the maximum allowable length of a chain of both user-entered and Compiler-synthesized CARRY_SUM buffers. Carry chains that exceed this length are broken into separate chains. (This option also applies to MAX+PLUS II-style CARRY buffers.)

Old Name

ARMSTRONG_CARRY_CHAIN_LENGTH, Carry Chain Length -- Stratix II/Stratix III

Type

Integer

Device Support

  • Arria 10
  • Arria GX
  • Arria II GX
  • Arria II GZ
  • Arria V
  • Arria V GZ
  • Cyclone V
  • HardCopy II
  • HardCopy III
  • HardCopy IV
  • Stratix II
  • Stratix II GX
  • Stratix III
  • Stratix IV
  • Stratix V

Notes

This assignment is included in the Analysis & Synthesis report.

This assignment supports synthesis wildcards.

Syntax


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

Default Value

70