>> > Does anyone know the algorithm good tools uses to recognize roms? I
>> > assume that it is some sort of check sum. Is it a hash, or something as
>> > simple as adding all the bytes of a binary togather?
>>
>> It stores a CRC for each ROM and compares it to a calculated CRC.
>> It calculates the CRC the exact same way ZIP does. The code should be in
>> the ever popular zlib library.
>>
> Thanks. Does it yield exactly the same values as the gnu implimentation?
I think so. But I am not sure.
> Is this sort of thing consistant, or does it change per implementation?
Implementation of zlib, or implementation of GoodTools?
I think all of the zip librarys produce the same value, that would be how
they remain compatiable.
I also think GoodTools has always used the same algorithm.
--
tim lindner tlindner@xxxxxxxxxxxxx
"Life. Don't talk to me about life." - Marvin, the android
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