Called Window on Windows or WOW, this layer will run older XP applications but not older drivers. Leopard will be fully 64-bit compliant straight out of the box, with non-emulated 32-bit support built-in.
Starting with Xcode 2.4, the OSX Universal binary format has been extended to support 32-bit and 64-bit for both PPC and Intel processors inside the same file, giving OSX quad universal binaries. Users don’t have to choose between processor architectures nor 32-bit or 64-bit processors, either at the OS or application layers, it’s all abstracted away from them – as it should be.
I know it’s a bit early for kernel emulation blather, but the hackers among you will be glad to know that you’ll soon have a fully 64-bit OS at your fingertips for the price of a Mac Pro with built-in XP/Vista support, you know, just in case.
64-bit Leopard knocks spots off Vista [TheInquirer]
> [EXCLUSIVE] Mac OS X v10.5 “Leopard” Developer Improvements [AeroXP]
Umm… I think it is a bit out-there to call the 64-bit version of Vista “highly specialized,” since for the most part all the systems Vista will be shipping on will be 64-bit systems. If anything, I think the 32-bit version of Vista will be the “highly specialized”version that only exists for odd corporate backwards compatibility reasons. I’m pretty sure that what you are going to see is Vista 64 being the standard version of Vista just about everybody has, as you would really have to go out of your way to find a 32-bit system that will even run Vista reasonably.
Also, WOW is hardly some odd emulation layer specific to Vista. It is what XP64 is using right now to run 32-bit software. WOW isn’t really software emulation, as much as HAL emulation. If you look at any of the benchmarks for XP64, you will find that there is no real performance penalty (and sometimes even a performance increase) from running 32-bit Apps in XP64 as opposed to XP32.
You should reduce the size of this image, because it overflows on the sidebar, so that the sidebar is at the bottom of the page. I have MS Internet Explorer.
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