Discrete Video IC

Discussion in 'General Electronics Chat' started by Yako, Nov 27, 2011.

  1. Yako

    Thread Starter New Member

    Nov 24, 2011
    245
    2
    Does anyone know of a cheap discrete video IC, capable of being interfaced to an MCU?

    Like a frame buffer for composite and RGB video. It builds the picture based on bytes that I write to it. Screen is busted up into segments.

    Something like this exist?
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    I'm assuming PAL, correct?

    I'm also assuming PAL has been phased out much like NTSC has been in the USA?
     
  3. Yako

    Thread Starter New Member

    Nov 24, 2011
    245
    2
    That is correct, NTSC and the more accurate and harder to do PAL.

    VGA would be good too.

    If an MCU were to be the choice -- this cannot be done in C, we would require the services of a professional ASM programmer.
     
  4. Yako

    Thread Starter New Member

    Nov 24, 2011
    245
    2
    Possible yes / no?

    Know a top-notch ASM programmer?

    I can supply very clear requirement papers for the programmer.

    Someone good would have it done in less than a week.

    In my opinion.
     
    Last edited: Nov 27, 2011
  5. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    You might find Ronald Dekker's uScope project interesting:
    http://www.dos4ever.com/uscope/uscope_e.html
    He used an 8-pin PIC12F675 clocked at 27MHz to build PAL frames while sampling data and taking care of a user interface(!) which is quite remarkable for such a low-end uC.

    While perhaps or perhaps not particularly useful for your application, it does help to give you an idea of what kind of computing power you would need to generate video in PAL.
     
  6. Yako

    Thread Starter New Member

    Nov 24, 2011
    245
    2
    Thank you very much for that.

    I have struggled to do something very crude in C, and concluded that it cannot be easily done without sending myself bananas.

    I'm not a bad high-level programmer in languages such as C, but I cannot use ASM at all. My brain is too level minded. I have a qualification with the Z80 CPU too. Only a 65% pass grade, but still a pass.
     
  7. Yako

    Thread Starter New Member

    Nov 24, 2011
    245
    2
    I pay some ASM programmer to do the job.

    If I can find a sane one that is.

    I cannot afford very much, so I prolly end up with some nutcase.
     
  8. Yako

    Thread Starter New Member

    Nov 24, 2011
    245
    2
  9. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    5,435
    1,305

    A "good" "top notch" ASM programmer will charge you about $100 an hour. and you are right it might be a solid weeks work, so at 40 hours would run you about $4000.

    What is your required screen resolution, mono/colour, and most importantly... Your budget?
     
Loading...