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Graziano_M

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Graziano_M
·11 日前·議論
If seeing a word written down is traumatizing, you need more help, and you’re not suited for the professional world. If coddling people like that would make you select away from a project for something beyond its technical merit, then I question your ability act as a professional.
Graziano_M
·17 日前·議論
Should be able to fix a bunch of stuff. Slowdowns, missed frames, etc.

The game only has a limited amount of time to do all of its logic before the VSYNC interrupt forces it to draw to the screen. Game have different ways of handling this, e.g. by rolling back and abandoning the changes, drawing whatever they have, etc.

A faster clock should make it s/t games that don't always get done in time should at least have a better chance.
Graziano_M
·19 日前·議論
The DMA buffer points to the heap.

The USB controller has access to it, but it only increments it and decrements.

By sending multiple packets that are smaller than typical, we can trick the USB controller to decrement the base pointer by more than it should, getting to underflow.

It so happens that on A12, the DMA buffer is after the USB task stack, so getting it to decrement by enough will get it to point to the task stack, where we can then write to LR and control where some function on the stack will eventually return to.
Graziano_M
·23 日前·議論
#1 is the main reason. There is basically unlimited data of things being done with human bodies, and it's also the easiest data to collect (tell a human to do something).
Graziano_M
·23 日前·議論
OK I need to buy it now.
Graziano_M
·28 日前·議論
Cool pencil mechanism, but you can get it in a plastic model for $7 https://www.unibrands.co/products/kuru-toga-mechanical-penci...

I have this one and have been using it for years.
Graziano_M
·先月·議論
Why that over the debug probe firmware?
Graziano_M
·先月·議論
It doesn't have to be for that, but yeah, that's the target. At the time, a lot of keyboard designs were based around the pro-micro formfactor, so this made it more-or-less a drop in replacement.
Graziano_M
·2 か月前·議論
I do this but better:

- caps + key = control + key

- tap caps = escape

- caps + space + key = ctrl, opt, cmd + key

All done in my keyboard firmware.
Graziano_M
·3 か月前·議論
One of the top comments on the video is "Bro accidentally discovered meditation"
Graziano_M
·3 か月前·議論
I got that reference!
Graziano_M
·4 か月前·議論
It's probably to keep the payload in SRAM for longer.

If it's the attack I believe it to be, basically it:

1. Acts as a debugger (core blocks touching flash) and writes a 2-part payload to SRAM.

2. Detaches the debugger, straps the boot pins to boot from SRAM (payload 1)

3. Resets the board via reset pin (keeping SRAM)

4. SRAM payload 1 runs (core blocks touching flash), configuring the FPB to 'overlay' the reset vector on flash with a pointer to payload 2

5. Flicks off the power just long enough for the hardware to reset, but not long enough for the SRAM to clear (this is where I think being cold helps).

6. Device boots 'unlocked' into 'flash', but the FPB hijacked the vector table and so the CPU immediately jumps to payload 2.

7. Payload 2 can now do whatever with flash (e.g. dump it out over UART or SPI)
Graziano_M
·5 か月前·議論
Weird. I happen to be watching Malcolm in the Middle and I find a link to Malcolm in the Middle
Graziano_M
·5 か月前·議論
Ah! I thought your wording was a hint (it's the viewer that thinks it's only 92 pages).
Graziano_M
·5 か月前·議論
Oh yeah. I have the paperback 'bible'. I don't think that that one is a polyglot, though.
Graziano_M
·5 か月前·議論
I feel like this tweet suggests that the PDF is a polyglot or an embedded second PDF.

https://x.com/gynvael/status/2024180784064598134
Graziano_M
·5 か月前·議論
Yep! and I already do: https://github.com/Grazfather/dotfiles/tree/master/nvim/fnl
Graziano_M
·5 か月前·議論
I literally came to post the exact same line as my indicator that this was AI-generated. I ctrl-f'd first and sure enough I'm not alone in using 'key insight' as the canary.
Graziano_M
·5 か月前·議論
I wish they supported Janet
Graziano_M
·5 か月前·議論
I try to 'punish' for these and tip less than I would normally.