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VGA Interface Using Only 74xx IC’s

Posted October 6, 2011 by Chris

To go with my other vga oriented projects here’s a VGA interface that is built entirely with TTL discrete logic chips. I built it primarily for the 7400 contest over at dangerous prototypes, so give a comment over there if you like the design. This interface outputs the proper Hsync and Vsync signals using some 74193 counters and uses an 8-state machine to output different color signals to an LCD.

6 Responses to “VGA Interface Using Only 74xx IC’s”

  1. mohamed Says:

    very interisting

  2. Guigui Says:

    Hi,

    Nice work!
    FYI I found a “masochist” who write some assembly to get pictures from its arduino: look at VGAout by Nabe
    http://code.google.com/p/arduino-vgaout/

    Thanks,

    G.

  3. ESTEBAN CERVANTES Says:

    HI, I HAVE ONLY A QUESTION. ARE YOU SURE THAT THE VGA WORKS WITH THIS CONFIGURATION OF 200X600 AND AT 10MHZ?
    THANKS

  4. juan Says:

    ,,,,,,,,,,,,,,,,,

  5. Charles Gakage Says:

    Very well done. I have RGB and
    V&h output from a LA76931K ic from an old tv set . How do i output to VGA monitor. Any tutorials on the same with ttl.
    Thanks

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