1y ago

E!!!!!

Linux Memes @programming.dev

JPDev @programming.dev

1y ago

E!!!!!

49 comments

thanks for that KeyboardInterrupt
PS/2 Port on its way to harass the CPU
- Seems the CPU has become the bully these days:
  CPU: hey keyboard do you have anything for me?
  CPU: hey keyboard do you have anything for me?
  CPU: hey keyboard do you have anything for me?
  CPU: hey keyboard do you have anything for me?
  CPU: hey keyboard do you have anything for me?
  CPU: hey keyboard do you have anything for me?
  CPU: hey keyboard do you have anything for me?
  CPU: hey keyboard do you have anything for me?
  Keyboard: E
  CPU: hey keyboard do you have anything for me?
  CPU: hey keyboard do you have anything for me?
  CPU: hey keyboard do you have anything for me?
  CPU: hey keyboard do you have anything for me?
  ..
  
  My grandpa always used to say that computers used to be way better before they became electrical.
- SMM GO BRRR
A disgusting fifth glyph? In MY list of funny pics? I may throw up.
- Is there not multiple in your name?
  
  He's a traitor.
  
  IDs don't count. Would fail too many for a hard to fix thing.
- Ah, a man of abundant class. How wondrous to run into you on this platform.
assembly flashbacks
I don't get it...
- Modern USB keyboards need to be asked what's being pressed by the CPU multiple times a second, but old PS/2 keyboards will actually interrupt the CPU to send the key press command
  
  Oh, didn't actually know what's being done behind the scene...
  Why is this relevant to Linux only?
- I see you had interruptions masked.
  
  Why e in this context? I have seen sei() and cli() before, but not E.
- PS/2 still works the same as it always has. No changes there. It's not really possible to change how PS/2 operates because it wouldn't be backwards compatible with old keyboards or software.
  Legacy stuff sticks around for a while and generally doesn't change, since it needs to retain backwards compatibility. Modern x86 processors also still have a "real mode" with 1MB RAM max, like what the 286 versions of DOS and Windows 3.0 used to use.
  You can buy industrial PCs and motherboards today that not only have a PS/2 port, but also other legacy stuff like parallel and serial ports, ISA slots, etc. There's actually motherboards that have ISA, PCI, and PCIe all on the same board. There's 25+ year old machinery that's still in use and extremely expensive to replace, so it's not uncommon to have new computers with legacy connectors/ports in industrial environments.
  
  Enthusiast motherboards still have the ps/2 ports as well. Usually because the usb controller is the first thing to stop working when the bclk gets too high or you're going sub 0 cooling.
  
  I was surprised when I just bought a brand new workstation and it had PS/2 ports.
  
  A20 gate is gone, IIRC
- The absolute lowest level of computers haven't changed much, we still fuck around with interrupts. However, USB peripherals are a LOT more complicated than this, and if I'm not mistaken they're polled by the connection master
- my keyboard uses a PS/2 port
  it's really old but it's pretty good
Int 8 would like to say hello. And you better not take too long.
Good old interrupts, how come we don't do it like that for drivers anymore
- We still kinda do, just depends on the kernel you're using. On Windows any IRQL > 2 is pretty much instant like the bird
For the music nerds in the house
- Here is an alternative Piped link(s):
  For the music nerds in the house
  Piped is a privacy-respecting open-source alternative frontend to YouTube.
  I'm open-source; check me out at GitHub.
Oh that got me
https://youtu.be/VPCtHAB4XYk
- Here is an alternative Piped link(s):
  https://piped.video/VPCtHAB4XYk
  Piped is a privacy-respecting open-source alternative frontend to YouTube.
  I'm open-source; check me out at GitHub.
https://youtu.be/nANdDIDQ2rc
- Here is an alternative Piped link(s):
  https://piped.video/nANdDIDQ2rc
  Piped is a privacy-respecting open-source alternative frontend to YouTube.
  I'm open-source; check me out at GitHub.

49 comments