Frequency of operation of M9K bram

[Altera_Forum]

Hi, 

 Does anybody know where/how to find the operating frequency of a block ram? I particularly need M9K and M10K. I was not able to find them in the altera documentation. Kindly let me know if you have any info on this.  Thanks.

[Altera_Forum]

My guess would be that since 512 x 8-bits = 4kB, that the inference is dumb. 

 1024 x 8-bits = 8kB, which needs a whole M9K. Try that.  Cheers, Dave

[Altera_Forum]

Dave, Jed. 

_there's nothing wrong with inference of the memory module Jed has written_.  It's just that when instantiated within test_harness as top level module, the entire design gets reduced to 13 registers, of which the memory block takes only 8 bits. Quartus will not, by default, use a M9K RAM block for just 8 bits.  Inference of RAM blocks for Jed's 2W4R module is working correctly and when you surround it with some logic that actually makes use of 4096 bits, it will be inferred into RAM blocks.

[Altera_Forum]

Ok, I take back all the mean things I said about Quartus and its inference engine ... :)

[Altera_Forum]

The RAM is inferred when I connect the address ports too to the shift registers. Now everything is working fine. 

 rbugalho and Dave..Thanks a lot for helping me out.

[Altera_Forum]

--- Quote Start ---  Now everything is working fine.  --- Quote End ---    Wahoo! :)  Cheers, Dave