this post was submitted on 05 Oct 2024
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PS/2 things (lemmy.world)
submitted 11 hours ago* (last edited 11 hours ago) by carrylex to c/[email protected]
 

In todays edition of "stuff that I found in my storage" a PS/2 meme

Image transcription:

mov rax, rbx add rax, rcx HELLO IT'S THE KEYBOARD I HAVE AN IMPORTANT MESSAGE E

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[–] [email protected] 1 points 2 hours ago (1 children)

Does USB not use interrupts?

[–] qaz 1 points 1 hour ago

It uses polling afaik

[–] somethingsomethingidk 7 points 5 hours ago (1 children)
[–] darthsid 2 points 3 hours ago (1 children)
[–] fatalicus 5 points 3 hours ago

Ps/2 keyboards used interrupt when transferring data, meaning instead of waiting for the cpu to get the data it is trying to send when it is free, it will just interrupt what the cpu is currently doing and tell it to process what the keyboard is sending.

[–] [email protected] 10 points 9 hours ago

Ah yes, the little old interrupt

[–] mvirts 1 points 6 hours ago