Decades of backwards compatibility means a lot of complexity. Intel is seeking to change that.
outlining a way to simplify its CPU architectures by removing legacy 16-bit and 32-bit support, therefore making them 64-bit only. Intel believes this change will lead to better optimized processors, meaning better performance and efficiency.
The building blocks of Intel's processor range can be traced all the way back to the original 16-bit 8086 processor released in 1978. Rather than include support for decades-old software and operating systems, Intel believes virtualization technologies have developed enough to emulate the features required for legacy systems. It's saying it's time to move on.
Today's 64-bit CPUs include processes to"trampoline" their way into 64-bit operation. According to Intel,"Intel 64 architecture designs come out of reset in the same state as the original 8086 and require a series of code transitions to enter 64-bit mode. Once running, these modes are not used in modern applications or operating systems."
In layman's terms, there's a bunch of stuff in there that's basically useless, and has been for a long time. But it's a bit more complicated than just switching everything over to 64-bit. Windows has transitioned away from 32-bit, but only fully in the era. There are loads of legacy 16- and 32-bit systems out there that are decades old and will need upgrading, or testing at least to see if they can be emulated.
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