Labels:text | screenshot | font OCR: Hit <S> to Stop, < SPACE> to pause .. When transferring files make sure you have selected the same protocol at both ends. Ready the BBS side before selecting upload or download on your terminal program. Hit <Ctrl X> five times to abort any file transfer . Here is a brief description of the protocols: (1) XModem : This is the original file transfer protocol introduced by Ward Christensen. It uses 128 byte blocks & error checking . a simple 1 byte checksum for (2) XModem CRC: This is the XModem protocol with a 2 byte CRC replacing the 1 byte checksum. a more reliable way of checking for errors. This gives (3) XModem 1k: This is the XModem protocol with CRC and a block size of 1k instead of 128 bytes. This gives a faster transfer time because less blocks are needed. (4) YModem (Batch) : This is the XModem 1k protocol with a header block added to the start containing the filename and size. Multiple files can be transferred and a null header block marks the last file sent. (5) YModem-g : This is the YModem protocol with the usual wait for ACK bypassed. This protocol should only be used when an error free line is guaranteed because the receiver does not have the option to resend a bad block. Transfer time is faster because data is sent at full speed waiting only between files. (6) ZModem : This is the most robust and advanced protocol. It is compatible with satellite relays, packet switched networks and non-transparent data flow. It also accommodates for a wide variety of computer systems . The auto-download challenge and 32-bit CRC are supported. (A) bort : This will abort the transfer.
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