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Transatlantic Ping Faster than Sending a Pixel to Screen

posted by mrcoolbp on Friday March 28 2014, @05:40AM   Printer-friendly
from the 1ms-2ms-3ms-floor dept.

Anonymous Coward writes:

Two years ago John Carmack tweeted, "I can send an IP packet to Europe faster than I can send a pixel to the screen. How f'd up is that?" And if this weren't John Carmack, I'd file it under the interwebs being silly.

Not convinced? You aren't alone, but Carmack appeared when called out to defend this claim.

We looked further and found this informative article from AnandTech about input lag.

 
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  • (Score: 2) by Koen on Friday March 28 2014, @11:24AM

    by Koen (427) on Friday March 28 2014, @11:24AM (#22545)

    And thanks to Z80's LDIR (load, increment & repeat) instruction one could send whole screens (or parts of it) very fast.

    LD HL, 2000h ; Pointer to the source
    LD DE, 4000h ; Pointer to the destination
    LD BC, 49125 ; Number of bytes to move
    LDIR ; Moves BC bytes from (HL) to (DE)

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