Microblog Memes

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A place to share screenshots of Microblog posts, whether from Mastodon, tumblr, ~~Twitter~~ X, KBin, Threads or elsewhere.

Created as an evolution of White People Twitter and other tweet-capture subreddits.

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I didn't know tbh (lemmynsfw.com)

submitted 5 days ago by [email protected] to c/[email protected]

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https://vt.social/@lina/114816623044909375

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[–] [email protected] 23 points 5 days ago* (last edited 5 days ago) (2 children)

Surely that only works on a USB that is already zero'd out (meaning nothing to change)?

I wonder if this benchmark holds true on a USB that has seen some action and needs to commit large number of zeroes in random dereferenced space?

[–] [email protected] 49 points 5 days ago (1 children)

This is reading, not writing. USB sends a dummy zero every few consecutive 1s for framing purposes. If you want the details Ben Eater has a great video on it.

[–] [email protected] 25 points 5 days ago

This is reading, not writing

Ah I see thanks

Ben Eater has a great video on it.

I'm not watching a video, but appreciate the pointing in the right direction

USB sends a dummy zero every few consecutive 1s for framing purposes

Huh, TIL about Bit-Stuffing and Framing Bits

Bit stuffing is the insertion of non-information bits into data ... is used for various purposes, such as for bringing bit streams that do not necessarily have the same or rationally related bit rates up to a common rate

Framing is the process by which, while receiving a stream of fixed-length frames, the receiver identifies the frame boundaries, permitting the data bits within the frame to be extracted for decoding or retransmission. A common practice is to insert in a dedicated time slot within the frame, a noninformation framing bit that is used for synchronization of the incoming data with the receiver.

[–] [email protected] 8 points 5 days ago

They're reading from the USB into /dev/null (effectively throwing the read data away), not writing