Altera Quartus II Settings File - Manual (Page 102)

IGNORE_CARRY_BUFFERS
Ignores CARRY_SUM buffers that are instantiated in the design. The Ignore CARRY Buffers option is
ignored if it is applied to anything other than an individual CARRY_SUM buffer or to a design entity
containing CARRY_SUM buffers. (This option also applies to MAX+PLUS II-style CARRY buffers.)
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 IGNORE_CARRY_BUFFERS <value>
set_global_assignment -name IGNORE_CARRY_BUFFERS -entity <entity name>
<value>
set_instance_assignment -name IGNORE_CARRY_BUFFERS -to <to> -entity <entity
name> <value>
Default Value
Off
Example
set_global_assignment -name ignore_carry_buffers on
set_instance_assignment -name ignore_carry_buffers on -to foo
102 IGNORE_CARRY_BUFFERS
MNL-Q21005
2015.05.04
Altera Corporation Quartus Settings File Reference Manual
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