sorter in vhdl

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no kaz, you didn't under stand me well

every address (duration) has its unique code

put all i want to separate the content of the ram ordered i.e i want to get the code ordered in a separate output from addressees ordered because i will use the ordered codes only

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that is easier then.

imagine your addresses are coming at random: 201, 300,,13,1012 (for associated data: 20,30,40,50)

you write to addresses 201(20), 300(30), 13(40), 1012(50)

Now you get data ready to be read out starting from address 0 to 1023 and discard any zero data so you will get:

addr data

13 => 40

201 => 20

300 => 30

1012 => 50

so your output stream will be: 40,20,30,50 in ascending order of duration(address)

Is that what you want?