Hi, On Sun, Mar 24, 2013 at 4:00 PM, giorgio.gilard...@libero.it <giorgio.gilard...@libero.it> wrote: > > Even though I did not personally try DOSBOX, I'm aware > that there are problems with 64 bit machines unable to > run 16 bit videos.
Did you literally mean videos (graphics? doubt it) or just 16-bit programs? AMD64 it weird, and I'm no engineer, and I haven't dived into the tech docs (nor want to). Some say you can still use 16-bit pmode stuff there, but obviously Win64 doesn't support that at all (no NTVDM nor Win16 support). Others say it's on a case by case basis for individual code segments. (shrug) You can run 16-bit stuff via virtualization, hence latest VT-X (Intel Nehalem or AMD's paged real mode) allows it to run at fairly fast speeds, e.g. under VirtualBox. DOSBox is only a raw emulator (using SDL) with its own fake DOS for running games, that's all. It's not trying to support everything, but it does have good support for graphics and sound. It's approx. a fast 486 (on 1 Ghz host machines). DOSEMU in Linux uses V86 mode (similar to NTVDM) to run DOS stuff at native speeds. Even DOSEMU x64 exists (but has to emulate the 16-bit stuff in software; however, 32-bit DJGPP-ish stuff is fast native speed). I've not use XP Mode, but IIRC it just uses MS VirtualPC, which only emulates a Pentium 2. IIRC, MS claimed it didn't support graphics or sound very well, hence wasn't targeted for end users but only for business, enterprise, etc. I've heard that XP Mode doesn't require VT-X, but Win8 Hyper-V (64-bit host only) does (and only latest with extended page tables or whatever). Not sure about all the various QEMU versions, e.g. KVM or with (abandoned) KQEMU. I know the latter sped it up a lot, but that was olden days (circa 0.9.0). Bernd claims VMware gives good performance. Also, BOCHS is said to be fairly accurate but slow. > In any case the "XP Mode" feature in Windows 7 should be > the best virtualization (at least on the paper !) And if this > solution fails I' suspect others would not be better. In other words, I'm not sure that's totally true, but it depends on what you have available, what you need, your level of patience and enthusiasm, etc. I can't say I've totally tried them all either. Though you can also just always dual boot! ;-) ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Freedos-user mailing list Freedosfirstname.lastname@example.org https://lists.sourceforge.net/lists/listinfo/freedos-user