[HDDRCVR]

Sergey, would it be possible to make an element that will use multiple dumps for ECC combine for the final corrections?
For example, if we get a stubborn dump, we could read it into a separate folder and read it x amount of times. Then using the layout, we could ECC correct them individually within the same task. Then the multiple ECC combine an element could take corrected values to produce a final united dump.

Currently, I did it by hand by reading the dump 8 times, correcting them all within same task, then splitting to 2x4 dumps and ECC combine, then rename files into 2x2 and combine again, then finally rename 2x1 and making final ECC combine.

multiple combine elements could be very helpful for something like this.

[Сергей]

//correcting them all within same task

Not need make ECC Fix before ECC Combine, if Fix_Input = ON

//then splitting to 2x4 dumps and ECC combine
// then rename files into 2x2 and combine again

I do not understand this place
Why need split and rename?

[Bolo]

I think OP means to add possibility to add more inputs at once.... as on atatched photos
how it will works ?

Take folder 1 and combine into MAIN
Then take folder 2 and combine into MAIN
Then folder ...... and combine info MAIN

By this computer and FE can work whole night with combine elements using diffrents input without operator

It's good idea

[HDDRCVR]

[Сергей]

Is is ok if multiple reads will be in same folder? Example:

d:\my case\1
d:\my case\2
d:\my case\3
d:\my case\4
..

[jeremyb]

Why all the hassle with ECC combine? Just re-read straight from the NAND chip.

On a low level there is no reason the NAND Reader can't do page level correction within FE, you have all the functionality in FE except a "for loop" with an "if" statement.

In my NR implementation I do page level addressing all the time, unfortunately my mind isn't smart enough to implement ECC correction so it's a non-starter but functionally all the technology is built into NR and FE.

[Сергей]

[arvika]

I agree with Sergey. If something goes wrong you can damage dump (which you for example correct within 2 weeks ).
But current solution is not perfect, because it is time consuming.

I do not know if it is possible, but maybe you can also add function:
reread page/block many times (like 3,5,7,9) and average the result on bit level and save it to dump. Of course reading will be long, but it could give really good result.

[jeremyb]

[Сергей]

"Sub folders" option added to ECC Combine in FE_1006

If selected, will take dumps from subfolders of selected folder

if not selected, from selected folder

You can add and delete sub folders while it process other folders

[jimb]

I can agree with Sergey, too. Check ECC Map first then do ECC Combine is the safe process, which we often follow. But, I have rarely seen a 00/FF damaged dump.

However, for some jobs the reread process is very time consuming, and the result is sometimes not repeatable.

Case 1: SanDisk v1 reread: red pair of sectors show green in Test Retry: Tune. Use that retry solution in NANDReader and the sectors are still red. Tune again, Read, still red.

Case 2: Micron v2: Test Retry: lots of red and green dancing on the screen, even in Constant Read. Optimal solution does not necessarily fix the red sectors in the dump. Maybe you can catch a retry solution where the red sectors show green. If you are lucky the sector will be green when read by NANDReader.

[How about putting back the "For Combine" option in Test Retry?]

For these cases ECC WriteBack during Test Retry would be a big help. I agree with jeremyb suggestion, write only green ECC sectors.

If ECC Reread, how would one set the Retry and voltage values?

Thanks,
jimb.

[Bolo]

[Сергей]

ECC Reread added to FE_1007

Please, test it, if you have good cases
Need check not that ECC map become green
Need check that files become good

It is very easy to make bug in so complex software

[Сергей]

In FE_1008 added "Max Diff" parameter

If difference in bits is bigger then Max Diff (by default = 10%) then data from block will not be imported

[Bolo]

Works OK as for test now.....

Next upgrade schould be use "Calc stattistic" to reread ONLY sectors marked on Red in map file and combine into main dump