EDC / NoEDC error on PS1 games #125

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claunia · 2026-01-29T16:10:01Z

claunia commented

2026-01-29 16:10:01 +00:00

Originally created by @antonioocera on GitHub (Jun 20, 2019).

Originally assigned to: @mnadareski on GitHub.

As you can see from this http://forum.redump.org/post/70577/#p70577 http://redump.org/disc/7925/ and many other logs from the Redump forum, the submissionInfo file reports EDC where actually the game is NoEDC, and viceversa. This cause a lot of confusion when submitting new dumps, of course.

Originally created by @antonioocera on GitHub (Jun 20, 2019). Originally assigned to: @mnadareski on GitHub. As you can see from this http://forum.redump.org/post/70577/#p70577 http://redump.org/disc/7925/ and many other logs from the Redump forum, the submissionInfo file reports EDC where actually the game is NoEDC, and viceversa. This cause a lot of confusion when submitting new dumps, of course.

claunia added the bug label 2026-01-29 16:10:01 +00:00

claunia closed this issue

2026-01-29 16:10:02 +00:00

claunia commented

2026-01-29 16:10:03 +00:00

@gingerbeardman commented on GitHub (Jun 20, 2019):

I am the dumper of that game. I was using an older version of DICUI at that point.

I'll dump it again so we can see what the latest version does. If that fixes things, I am happy to redump affected games.

Cheers!

@gingerbeardman commented on GitHub (Jun 20, 2019): I am the dumper of that game. I was using an older version of DICUI at that point. I'll dump it again so we can see what the latest version does. If that fixes things, I am happy to redump affected games. Cheers!

claunia commented

2026-01-29 16:10:04 +00:00

@antonioocera commented on GitHub (Jun 20, 2019):

I've seen other logs from the forum and actually the submissionInfo file is always reporting EDC = YES.
You don't need to redump anything, you can just manually check the .bin file with edccchk just to be sure. I think it's just a small error for the submissionInfo file, that can be easily fixed hopefully. If you can test the latest version can be better though.

@antonioocera commented on GitHub (Jun 20, 2019): I've seen other logs from the forum and actually the submissionInfo file is always reporting EDC = YES. You don't need to redump anything, you can just manually check the .bin file with edccchk just to be sure. I think it's just a small error for the submissionInfo file, that can be easily fixed hopefully. If you can test the latest version can be better though.

claunia commented

2026-01-29 16:10:04 +00:00

@gingerbeardman commented on GitHub (Jun 20, 2019):

Great news that it's just an error in the summary.

@gingerbeardman commented on GitHub (Jun 20, 2019): Great news that it's just an error in the summary.

claunia commented

2026-01-29 16:10:04 +00:00

@mnadareski commented on GitHub (Jul 30, 2019):

If you can provide the _EdcEcc.txt or _EccEdc.txt file from one of those dumps, I'd appreciate it. Since DICUI is just trying to use the DIC outputs to determine EDC state, it's somewhat inaccurate as the current method just uses the number of EDC-related errors as the metric.

@mnadareski commented on GitHub (Jul 30, 2019): If you can provide the `_EdcEcc.txt` or `_EccEdc.txt` file from one of those dumps, I'd appreciate it. Since DICUI is just trying to use the DIC outputs to determine EDC state, it's somewhat inaccurate as the current method just uses the number of EDC-related errors as the metric.

claunia commented

2026-01-29 16:10:05 +00:00

@gingerbeardman commented on GitHub (Jul 30, 2019):

Here we go, I redumped the game SLPS-00373 using the latest AppVeyor build of DICUI (ie. DIC 20190629 193630).

disc.img_EccEdc.txt.zip

@gingerbeardman commented on GitHub (Jul 30, 2019): Here we go, I redumped the game SLPS-00373 using the latest AppVeyor build of DICUI (ie. DIC 20190629 193630). [disc.img_EccEdc.txt.zip](https://github.com/SabreTools/DICUI/files/3446559/disc.img_EccEdc.txt.zip)

claunia commented

2026-01-29 16:10:05 +00:00

@mnadareski commented on GitHub (Aug 1, 2019):

Thank you, I think I need to look into this a little more since it appears that more info might be needed to figure out the EDC status.

@mnadareski commented on GitHub (Aug 1, 2019): Thank you, I think I need to look into this a little more since it appears that more info might be needed to figure out the EDC status.

claunia commented

2026-01-29 16:10:05 +00:00

@gingerbeardman commented on GitHub (Aug 1, 2019):

Let me know if I can help more.

@gingerbeardman commented on GitHub (Aug 1, 2019): Let me know if I can help more.

claunia commented

2026-01-29 16:10:05 +00:00

@mnadareski commented on GitHub (Jan 29, 2020):

From @superg elsewhere:

EDC yes / no for PlayStation: you have to iterate over each mode2form2 cd sector and check if edc field is zero
EDC - No: all mode2form2 edc fields are 0
EDC - Yes: all mode2form2 edc fields are non zero (technically zero edc can still be a legit case so I think that all sectors have to be scanned)

In DICUI, this would translate to looking for the mode 2 form 2 and mode 2 no edc lines in the .img_EdcEcc.txt file. This can be easily done.

@mnadareski commented on GitHub (Jan 29, 2020): From @superg elsewhere: ``` EDC yes / no for PlayStation: you have to iterate over each mode2form2 cd sector and check if edc field is zero EDC - No: all mode2form2 edc fields are 0 EDC - Yes: all mode2form2 edc fields are non zero (technically zero edc can still be a legit case so I think that all sectors have to be scanned) ``` In DICUI, this would translate to looking for the `mode 2 form 2` and `mode 2 no edc` lines in the `.img_EdcEcc.txt` file. This can be easily done.

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Reference: SabreTools/MPF#125