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.
For the updated DOSBox code, you need at least DOSBox 0.74-2, since DOSBox 0.75 is not yet released. For DOSBox 0.74 there are also patched versions available in some Distributions, for example since October 2015 Debian and Ubuntu ships them in their dosbox 0.74-4.1 and Gentoo ships it in dosbox-0.74-r1 since June 2016.