sorter in vhdl

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if there is not a value in the successive address it put a zero in content of ram (corresponding to this empty address) its wright or not??

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you don't write so content stays zero

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but the reverse happens i.e i have a discrete values.

and i have a question to you if i want to separate the codes and the addresses that output ascending i.e the codes ordered in output

and the corresponding in another output because i will use the codes that ordered to count the distances that we done before

i hope you understand me well

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If I understood you. You are saying same duration(address) for two codes?

in that case you need to tackle the problem. one way is to have wider ram and check address is written to before then put new data at same location next to previous data and flag it as two or three and so on. Or you can check in your logic and change address accordingly.

You will need to work out details of your case and my above algorithm is just a guide.