Wintermute_BBS<p>I am currently doing some testing with <a href="https://oldbytes.space/tags/rc2014bbs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rc2014bbs</span></a> and there is something strange here:</p><p><a href="https://oldbytes.space/tags/rcbox" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rcbox</span></a> <a href="https://oldbytes.space/tags/BBS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>BBS</span></a> runs on a Z80 CP/M system ( <a href="https://oldbytes.space/tags/rc2014" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rc2014</span></a> ) and I am using the CP/M file transfer tool KMD.COM to <a href="https://oldbytes.space/tags/transfer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>transfer</span></a> <a href="https://oldbytes.space/tags/files" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>files</span></a> to and from the system via <a href="https://oldbytes.space/tags/xmodem" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>xmodem</span></a> (CRC and 1K - both possible).</p><p>This seems to work as long as the client machine up- or downloading files is an <a href="https://oldbytes.space/tags/8bit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>8bit</span></a> machine: a RC2014 with <a href="https://oldbytes.space/tags/Qterm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Qterm</span></a> works, a <a href="https://oldbytes.space/tags/Commodore64" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Commodore64</span></a> with <a href="https://oldbytes.space/tags/CCGMS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CCGMS</span></a> works - but as soon as I try to use <a href="https://oldbytes.space/tags/Syncterm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Syncterm</span></a> or <a href="https://oldbytes.space/tags/Qodem" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Qodem</span></a> or any other modern <a href="https://oldbytes.space/tags/Linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Linux</span></a> <a href="https://oldbytes.space/tags/terminal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>terminal</span></a> <a href="https://oldbytes.space/tags/program" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>program</span></a> the transfers fail with either "error in header" or, more often, with "CRC error".</p><p>How is this possible?! 🤔</p>