CRC ERROR but MD5SUM MATCHS (RESOLVED)

[mauruco]

Hi guys, I started from scratch. The second attempt seems to be working.
My GameBoy game was successful.
My N64 games keep giving CRC error, but I took the dumps and for each MD5SUM I found an equivalent MD5SUM on google.
So I was in doubt, these MD5 below are good dumps or what's wrong now?

MD5 ae5107efdd3c210e1edd4acd9b3cac31 TUROK_DINOSAUR_.Z64
MD5 2a0a8acb61538235bc1094d297fb6556 ZELDAMAJORASMAS.Z64
MD5 70c525880240c1e838b8b1be35666c3b GOLDENEYE.Z64
MD5 caf9a78db13ee00002ff63a3c0c5eabb STARFOX64.Z64
MD5 3a67d9986f54eb282924fca4cd5f6dff MARIOKART64.Z64
MD5 1add2c0217662b307cdfd876b35fbf7a ResidentEvilII.Z64
MD5 c7f1a43764a26da2e43f2a36a5f76e4c DUKENUKEM.Z64

[majorpbx]

Hello, First I would not use google for DAT matches. Use instead the website below as it's the only true trusted source of that data. Second, what version of the Sanni software are you using on your Arduino and is your SD Card setup correctly? If I were you I'd completely re-due those first following the wiki guides and then test again.

https://datomatic.no-intro.org/

[mauruco]

At the end of the dump process, a crc value appears, but it is definitely not the correct crc value. It's not the value of n64.txt, it's the value it uses to compare that is wrong. But if I take the card out and calculate the crc value on the PC, then it's the correct value.
This value the arduino saves in memory and uses to compare in the end?
Could it calculate from the file on the SD?

[sanni]

The current N64 code calculates the CRC from the memory of the Arduino because it's faster.
Version 2.7 calculated the CRC from the file on the SD card. You can try that older version and see if it makes a difference, it does need a FAT32 formatted SD card.

[mauruco]

It worked @sanni :)
Would it be possible to put a switch in the sketch "slowCRCCheck/fastCRCCheck"?
I would like to use the latest version.
Sorry if I'm asking for too much. I don't program C++ but I think I can help if you want.

[sanni]

Here is the latest V6.5 version but with the old N64 dumping and CRC code from V2.7. It still has the new SD library though.

https://www.dropbox.com/s/qa8vjqhxpv8wz6l/V6.5_Portable_Test.zip?dl=1

[mauruco]

Thank you very much. I've already tested it with an N64 cartridge and it works perfectly (v6.5).

[sanni]

Ok I have uploaded this test version as V6.6 to the main github.

To enable slow crc calculation in option.h remove // in front of "#define slowcrc" like so:

// Define CRC method for dumping N64 ROMs, slow seems to be more compatible with some SD cards
#define slowcrc // crc will be calculated after dumping from SD card instead of during dumping from memory

[kdawg8]

Is V6.6 still available? I don't see it on the main github page. I'm having this issue on many (4 out of 9) Arduino modules and that would be great if there is a fix. Thanks!

[sanni]

I have put together a V6.6 release just now.

You will have to remove the two // in front of #define slowcrc in line 41 of options.h before updating to enable slow crc.

[kdawg8]

Thanks sanni! The slowcrc method fixed the issue on the Android modules which produced the N64 CRC error.