Packing DSP blocks

Question

On 3-12 of Stratix V manual it states each DSP block can support 3 independent, 9x9 multipliers. When I synthesize it puts them in 3 separate DSP blocks. How do I get it to pack it into 1 DSP block?

I found this solution for 18x18, but it does not work.

http://altera.com.my/support/kdb/solutions/rd11052012_734.html

altera_forum · Answer

I recently had this same question. You have to assign the logic to a "LogicLock" region.

See the instructions in this thread for how to do it:

http://www.alteraforum.com/forum/showthread.php?t=42904

Cheers,

Dave

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Packing DSP blocks

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