this post was submitted on 26 Apr 2024
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[–] [email protected] 24 points 8 months ago (1 children)

Where is the ctrl+alt+del function defined? I just want to see what made that sequence work. I'd also be interested in where ctrl+break is defined.

[–] [email protected] 36 points 8 months ago (1 children)

Ctrl+alt+delete was a separate interrupt line direct from the keyboard. That is, when you pressed the three keys, the interrupt signal was asserted, causing the CPU to jump to the interrupt service routine, which should be in the source code package.

[–] [email protected] 2 points 8 months ago (1 children)

is it in the source code, or is it just passed right to BIOS?

[–] [email protected] 5 points 8 months ago* (last edited 8 months ago) (1 children)

It was originally a BIOS interrupt, but eventually got captured by the OS. Here's Dave Bradley talking about inventing it https://m.youtube.com/watch?v=K_lg7w8gAXQ

[–] [email protected] 1 points 8 months ago

Bill does not think that is funny.