dosUAE originated when a lot of people still preferred to use DOS , specially when running emulators. It hasn't been updated for some time, and does not have JIT at all. There is absolutely no point in running dosUAE today unless your PC is so old it cannot run Windows. Even then, UAE would be so slow as to be practically unusable.
If you're going to be running Amiga emulation in DOS, Fellow is a better choice.
