VGA to D-Terminal adaptor?

Discussion in 'Off Topic Discussion' started by Yakumo, Jun 12, 2008.

  1. Calpis

    Calpis Champion of the Forum

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    It's like a Japanese take on Mission style, which is prevalent where sayin999 lives.

    Well there has to be at least a 1 frame delay on interlaced video since it has to wait until both input fields have finished to merge and display them on the next output frame twice. With progressive, it's possible to only have a field delay, but I wouldn't be sure it does that. You're not playing on a LCD either are you? LCDs have lag like 4-16ms delay which is equivalent to ¼ field-1 frame and LCDs can also just blur between contrasting frames.
     
    Last edited: Jun 14, 2008
  2. andoba

    andoba Site Supporter 2014

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    What about getting RGB from the DIN 8 AV OUT connector on the MD, doing a RGB to component circuit (cheap) and connect that to a D Terminal connector? Shouldn't it work?
     
  3. GaijinPunch

    GaijinPunch Lemon Party Organizer and Promoter

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    Sorry, I just now realized I don't really use mine in 31khz mode, and that such a mode would have to have at least a frame lag. I did play Rockman X3 all the way through with it on my LCD a few months back. I cleared it, and I suck at the series, so that should speak volumes. :) 15khz mode is simply pass through, I'm quite sure.

    Nobody is questioning where it comes from. It's having a proper cable that is the issue.
     
  4. GaijinPunch

    GaijinPunch Lemon Party Organizer and Promoter

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    While everyone's here, maybe we can get some of the more technically inclined members to comment. Calpis knows of a sync issue I recently had with my arcade monitor. Running it through the XRGB2 basically solved everything, but like a purist, I wanted to just connect it directly to the monitor. Supergun, PC, and DC VGA worked fine. 15khz consoles did not. I was told this is because consoles send composite sync and arcade games generally do not, cocking up the display.

    I had a cable made with an lm1881 chip in it to strip the composite sync. Consoles (Saturn, PC-Engine, PS2) all of a sudden work fine. PC no longer did (this looked really strange), nor did my Sigma Raijin (typical sync issue). Sigma AV7000 was fine. The guy that made my cable said he remembered something about the Sigma Raijin's sync being weird, and it having to be handled differently.

    I guess one thing I've never wrapped my head around is why some monitors (my Wega CRT never had any of these issues) and devices (XRGB2) can handle just about anything, but the monitor on it's own is picky.
     
  5. Barc0de

    Barc0de Mythical Member from Time Immemorial

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    GP, teles in general, especially the high-end CRT models of later production, cover a great range of compatibility options mainly because they re geared to be used with legacy and "modern" equipment.

    That said, my multisystem WEGA handles PAL n64 games over composite WAY too bright (making them unplayable), whereas PAL PS2 and PS3 seem to be dandy!
     
  6. GaijinPunch

    GaijinPunch Lemon Party Organizer and Promoter

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    True dat, but I'm not really talking about legacy and modern. Just RGB. I know the signals can be of different strength and whatnot, but I still find the compatibility issues somewhat silly.
     
    Last edited: Jun 15, 2008
  7. sayin999

    sayin999 Officer at Arms

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    Well where I live, which is in California, there are a lot of homes that are done in that style so that why i say americanized, even though as you said it is actually Spanish style.
     
  8. Jamtex

    Jamtex Adult Orientated Mahjong Connoisseur

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    Because a monitor on it's own expects to get Composite Sync only, where as the TVs expect either Composite Video (and strip sync) or Composite Sync. Sticking a Sync via the LM1881 is going to mess it up and you'll end up with a broken sync, all you need to do is add a bypass switch to the unit.
     
  9. GaijinPunch

    GaijinPunch Lemon Party Organizer and Promoter

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    You mean to the lm1881? Yes, I know that now. But that still only tells me the results... not the cause. I'm more or less asking why there's no standard on sync and composite video. Apparently the Saturn does output sync, but yet, there I was, with a fucked display w/o the lm1881.
     
  10. Jamtex

    Jamtex Adult Orientated Mahjong Connoisseur

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    It's probably because the SCART standard doesn't have a Composite Sync input just a Composite video that all RGB SCART cables have Composite Video rather then Sync which some consoles can also output. Which makes sense as if you think about it as if you do have a TV that can't do RGB then it will fall back to Composite Video, where it would just be a lead otherwise.
     
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