https://bugs.winehq.org/show_bug.cgi?id=18118
--- Comment #10 from Alexandre Julliard julliard@winehq.org --- (In reply to Rosanne DiMesio from comment #9)
It's possible that this is something that has already been fixed in DOSBox. The native version of DOSBox I have installed is 0.74, and according to http://wiki.winehq.org/DOSBox, some of the changes to DOSBox to improve compatibility with Wine are "currently only available in the SVN Version and will be included in DOSBox 0.75."
You definitely need the SVN version.