Why does the StratixIII/IV cant support ESB/CAM?

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Rsync has once posted VHDL code in another forum thread which implements content addressable memory with block rams in Stratix devices. You can find this thread here:

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Thank U very much!The code in that post doesn't support TCAM...

Could U plz give me the thread of the TCAM? I cant find them by using the "quick search" of this Forum... :(