Arm Announces Armv9 Architecture: SVE2, Security, and the Next Decade

Re:Arm Announces Armv9 Architecture: SVE2, Security, and the... by my123 on Tuesday March 30, 2021 @03:47PM (#26639463)

Intel tried to make: https://ark.intel.com/content/www/us/en/ark/products/79084/i...

in the past as a relatively cheap x86 CPU. ($9.62 per unit)

However, it's a 400MHz 486 with some backports (1st generation Pentium, no MMX even) and broken LOCK prefix so that software specifically needed to be recompiled for it.

And at 2.2 W too, it never ended up succeeding anywhere, with no successor.

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Re:Arm Announces Armv9 Architecture: SVE2, Security, and the... by toast0 on Tuesday March 30, 2021 @04:43PM (#26640183)

I was pretty sure (without citations) the quark is a die shrunk pre-mmx pentium (but post division table bug), are you sure it's a 486?

The right era pentium had the same LOCK prefix issue (we used to call it the F00F bug)

Edit: Thanks for link; I must have anchored on the instruction set and ignored that it was using the 486 pipeline.

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Re:Arm Announces Armv9 Architecture: SVE2, Security, and the... by my123 on Tuesday March 30, 2021 @04:46PM (#26640219)

https://www.linleygroup.com/newsletters/newsletter_detail.ph...

"The new x86 CPU uses an old-school 486 scalar pipeline and the original Pentium instruction set with some modern enhancements"

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Re:Arm Announces Armv9 Architecture: SVE2, Security, and the... by tedunangst on Tuesday March 30, 2021 @05:13PM (#26640605)

The fact it's got the f00f bug certainly made it sound like a dusted off pentium core.

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Re:Arm Announces Armv9 Architecture: SVE2, Security, and the... by jandrese on Tuesday March 30, 2021 @04:51PM (#26640301)

Yeah, but the PC104 boards that those got stuck on were still $250 each.

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