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Dosbox run faster and is easier to setup and get running than dosemu, at least that has been my experience. Actually, I prefer doeemu when I can get it to work, but it has never worked (for me) under Slackware 12.2.
I started using dosbox for an old dos program. CPU cycles were high, 10-20%. You can tweak the settings using the config file. This changed when I installed dosemu which goes down to 1-5% for the same dos program.
Some dosemu features can be turned off ie net, sbemu, aspi, sdl etc in the compile-settings file before compiling
Last edited by pokipoki08; 09-08-2009 at 01:24 AM.
It depends on what you do you really need. If you just want to play some good old DOS game stick with the dosbox - it's easier to install and maintain. On the other hand if you need to test some DOS software, do any DOS development or try to use Windows 3.11 you'd have to use dosemu as it doesn't "emulate" DOS but is a (very limited but useful) virtual machine.