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Paul Eberhart
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189 followers
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USPS finally found the sketchy <$8 logic analyzer I ordered that they lost somewhere earlier this week.

It's a Salae clone (0925:3881), and I'm pretty sure the FX2LP in it is counterfeit, but it seems to work great with fx2lafw and Sigrok, so I'm happy.
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8/17/17
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This is pretty neat, though it has a definite commercial slant to the replacement suggestions.

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This is cool.
Reverse Engineering x86 Processor Microcode [PDF]

Just presented at the USENIX Security Symposium this week, the authors not only figured out how the AMD microcode update mechanism works with a crazy set of tooling they made, but wrote their own sample microcode updates, some of them evil.

They're being as responsible as possible ("It should be noted that triads in microcode updates are obfuscated with an algorithm we do not specify further due to ethical considerations.") but uh... who's ready for microcode viruses? Or we're going to find out nation-state level actors already do that.

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Right here is why almost all education research doesn't pan out. Especially not the kind that looks like a silver bullet for student achievement.

Also, I don't remember having run into the author before, the whole site has really solid education writing.

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Wow, it really has turned entirely into "slightly predatory organizations exploit vulnerable freshmen."

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Pulling down my Macintosh 12" Color Display because it has been misbehaving and...oohhhboy. Internet wisdom says C148 is the most likely culprit. That dark patterning in the general area of C148 isn't a shadow, and smells of capacitor schmoo.

Looks like I'm extracting the main board and doing some rework.
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I was about to be grumpy about it, but we're actually in agreement: for some reason (probably related to bullshit ideas in UI design and in education) kids aren't learning about abstract symbolic manipulation, and we need to take measures to fix it. Having a system that phases from cute icons to a more powerful textual interface is a good idea.

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And this is why the ACLU is one of my handful of annual donations.

They're on the side of expression no matter which kind of unpopular expression is being suppressed. In fact, if you get past inflammatory headlines, they usually have co-defendants on the far extremes when they get involved in a case.

You don't get people to participate in a shared society by validating that it won't engage with them, and you don't build tools for the other alternative unless you want them turned on you and yours.

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There is already a one-stop media source. The commercial services are just competing on quality of service.

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I agreed to cut some pockets with my personal CNC router for a project on campus. Got home, hit power button, powerlight flashed, wouldn't boot.

Why isn't my CNC controller working? Oh, because two caps on the motherboard fucking exploded, like they always do.
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