Altera® Quartus® Prime Standard Edition Settings File Reference Manual

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

1.2.139. STRATIX_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

Carry Chain Length -- Stratix/Stratix GX/Cyclone/MAX II/Cyclone II/Cyclone III

Type

Integer

Device Support

  • Cyclone
  • Cyclone 10 LP
  • Cyclone II
  • Cyclone III
  • Cyclone III LS
  • Cyclone IV E
  • Cyclone IV GX
  • MAX 10
  • MAX II
  • MAX V
  • Stratix
  • Stratix GX

Notes

This assignment is included in the Analysis & Synthesis report.

This assignment supports synthesis wildcards.

Syntax


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

Default Value

70