Carry Chain Length logic option

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.)

This option must be assigned to a design entity or it is ignored.

Scripting Information

Keyword: carry_chain_length

Settings: <integer>

default = 48

Keyword: stratix_carry_chain_length stratixii_carry_chain_length

Settings: <integer>

default = 70