DOSBox is a DOS-emulator that uses the SDL-library which makes DOSBox very easy to port to different platforms. DOSBox also emulates CPU:286/386 realmode/protected mode. We use it to replace our Virtual 8086 Mode.
We started searching for native dosbox on non-x86 targets with wine-1.3.12. For Wine releases 1.3.30 and later, we added code in Wine and DOSBox for more compatiblity. The updated DOSBox code is currently only available in the SVN Version and will be included in DOSBox 0.75.
Since 0.75 is still not released, we rely on packagers to include the two patches mentioned below, for example since October 2015 Debian and Ubuntu ships them in their dosbox 0.74-4.1. Gentoo ships it in dosbox-0.74-r1 since June 2016.