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- Prism is an emulator for ARM-powered Windows devices that translates the underlying code of software built for traditional x86-64 binaries used by Intel and AMD chips.
www.windowscentral.com/software-apps/what-is-microsoft-prism
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May 24, 2024 · Prism is an emulator for ARM-powered Windows devices that translates the underlying code of software built for traditional x86-64 binaries used by Intel and AMD chips.
- Overview
- WOW64 APIs
- Updating to support an Arm64 version of your app
Emulation for x86 apps makes the rich ecosystem of Win32 apps available on Arm. This provides the user the magical experience of running an existing x86 win32 app without any modifications to the app.
Arm versions of Windows 10 include emulation technology that enables existing unmodified x86 apps to run on Arm devices. Windows 11 extends that emulation to run unmodified x64 Windows apps on Arm-powered devices.
An x86 (or x64) app doesn’t even know that it is running on a Windows on Arm PC, unless it calls specific APIs (IsWoW64Process2).
The WOW64 layer of Windows allows x86 code to run on the Arm64 version of Windows. x86 emulation works by compiling blocks of x86 instructions into Arm64 instructions with optimizations to improve performance. A service caches these translated blocks of code to reduce the overhead of instruction translation and allow for optimization when the code runs again. The caches are produced for each module so that other apps can make use of them on first launch.
While the ability to emulate x64 and x86 on Arm devices is a great step forward, your app may be able to take advantage of native performance gains and the unique qualities of Arm64-powered devices by updating to support an Arm64 version of the app.
See Add Arm support to your Windows app for guidance on how to create an Arm64 version of your apps and what sort of advantages, challenges, and tooling may be involved, as well as available support for creating an Arm64 version of your app (and any related dependencies).
Jun 30, 2024 · The new x86-64 emulator is called Prism, and it’s now available. With a variety of Copilot Plus PCs sporting the new Snapdragon X processor now on the market, we thought we’d take a...
Jul 18, 2024 · We installed a bushel of x86 Windows programs on a new Snapdragon X Elite laptop to see if Microsoft’s claims of smooth operation on its new emulator pan out. You may be surprised by our...
Jun 20, 2024 · Microsoft has introduced a new x86-64 emulator called PRISM with the latest Windows 11 update, aimed at improving the performance of Intel and AMD code on ARM-based Windows laptops.
May 29, 2024 · In Short. Microsoft announced a new emulation layer called Prism on Windows 11 which can run x86 apps on ARM hardware with better performance and efficiency. The new Prism translation layer also works for many Windows games and translates x86 binaries on the fly.
Jul 18, 2024 · Not to worry: This spring, when Microsoft launched the Copilot+ PC project (with most of the major Windows PC makers behind it), it announced Windows’ new Arm emulator, Prism. The claim:...
