sorter in vhdl

ok ,kaz

i want to sort duration ascending such as

8,9,16,32,48

and the code will e

20,40,10,40,50

how i can do it ??

plz help me if you can

i will be very thankful to you

thanks

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ok ,kaz

i want to sort duration ascending such as

8,9,16,32,48

and the code will e

20,40,10,40,50

how i can do it ??

plz help me if you can

i will be very thankful to you

thanks

--- Quote End ---

you already done that. you write the values 20~50 at addresses 8,9,16,32,50

once done then you run address cycle from 0 downto 1023 and get output ram contents which are write flagged then you will get

them coming out sorted since for example location order will be ascending as 8,9,16,32,48

to avoid confusion you can use bit(8) as flag !!

how i can do that ??

because i am really confused !!

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to avoid confusion you can use bit(8) as flag !!

how i can do that ??

because i am really confused !!

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you might as well not use flag at all if your code is never all zeros.

Then your problem reduces to just write/read

write stage: write code per duration as address then once done go to read stage

read stage: use address range either from 0 to 1023 and discard any location that contains zero

(or just your known duration values and get code directly )

Two points:

- I can't identify a valid bubblesort algorithm which would imply exchanging RAM entries.

- The real challenge is to implement the sort algorithm in FPGA block RAM, being aware of the requirements for RAM inference.

kaz,be patient to make me understand the code

you consider in the code that addresses(duration) is a continuous values ,ok

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??

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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Two points:

- I can't identify a valid bubblesort algorithm which would imply exchanging RAM entries.

- The real challenge is to implement the sort algorithm in FPGA block RAM, being aware of the requirements for RAM inference.

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we are not exchanging ram entries but want to sort som data in ascending order to output. If the post wants to rearrange in second ram then this could be done. by reading ram1 into a second ram.

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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.

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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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?