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Altera_Forum's avatar
Altera_Forum
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15 years ago

LAB Carry-In/Out

Hi! I havte to make a ripple carry adder for a Cyclon II FPGA, the adder module is working properly but not using the LEs carry chain connections (LAB Carry-In, LAB Carry-Out). My question is t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Finally i made it :) Using the carry_sum primitive between the full adders forces the compiler to use the internal carry chain.

Later i could post an example if someone is interested.