Dallas Ibutton CRC check in C or C

Does anyone have developed the code to check the CRC of an ibutton connected via one-wire to a quadi-directional port ? I'm studing how to develop it, there's someone who want speak about ?
Dallas Ibutton CRC check in C or C

Does anyone have developed the code to check the CRC of an ibutton connected via one-wire to a quadi-directional port ? I'm studing how to develop it, there's someone who want speak about ?
CRC-32 or CRC-16 code

Dear friends, I'm trying to develop a CRC-32 routine for my V-Star Quisar 320 using the Keil C51 compiler suite. I have found (in the Internet) a sample C code implementing CRC-32 algorithm. Testing...
CRC-32 or CRC-16 code

Dear friends, I'm trying to develop a CRC-32 routine for my V-Star Quisar 320 using the Keil C51 compiler suite. I have found (in the Internet) a sample C code implementing CRC-32 algorithm. Testing...
I need a CRC-8 bit XFP complient CRC piece of code

I need a XFP complient CRC code module. Or I need to validate the one that I got. So any help (pointers to code, pointers to XFP CRC spec, notes on how to validate) would help. Sean