Basic XModem Transfer Protocol

[atarifan49]

Trying to do a basic send only Xmodem transfer protocol and having a few problems getting a good description of the checksum calculations.

 

I'm looking at the XModem 128 byte using the original checksum method and/or the CRC method. Also if someone has something that's already implemented in 68000, and is willing to share, that would be highly appreciated.

 

Thanks in advance.

[atarifan49]

Trying to do a basic send only Xmodem transfer protocol and having a few problems getting a good description of the checksum calculations.

 

I'm looking at the XModem 128 byte using the original checksum method and/or the CRC method.  Also if someone has something that's already implemented in 68000, and is willing to share, that would be highly appreciated.

 

Thanks in advance.

 

 

Disregard. I managed to find a good description of the protocol and convert a 6502 CRC-16 routine to the 68000. Got it working.