Carry_chain_length – Altera Quartus II Settings File User Manual
Page 60
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.)
Type
Integer
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 CARRY_CHAIN_LENGTH
set_global_assignment -name CARRY_CHAIN_LENGTH -entity
set_instance_assignment -name CARRY_CHAIN_LENGTH -to
Default Value
48
60
CARRY_CHAIN_LENGTH
MNL-Q21005
2015.05.04
Altera Corporation
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