ROM Hack CRC on Saves

[donotbugme]

is there a formula for the CRC on m3 sav's or game saves?

like is it game dependant?

 

[jeklnoo]

game dependant.

 

[donotbugme]

are there any tutorials to finding out how to calculate the crcs for saves after editing?

 

[Tanas]

Just rar the save and winrar will tell you the crc...

 

[FAST6191]

You could luck out and find the save is a bios crc16 but if it is not I am afraid you are in need of some assembly skills.
BIOS crc16 is not your standard crc16 so either implement one with the data from here:
http://nocash.emubase.de/gbatek.htm#biosmiscfunctions
or this is what I use in hex workshop (the bios crc16 is used in the hash of the header):

 

[donotbugme]

you wouldn't happen to have an example of how it's calculated using crc16 would you fast6191? i.e for a game

 

[FAST6191]

Those options are for the BIOS crc16 function, the only time I ever use it is when I mess around with the DS rom header:
at 15E hex is the BIOS CRC-16 of 0 to 15D hex.
If you want to write an app to calculate it the link I gave details how it happens.