Possible x2 incompatibility problem

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  • April 23, 2018 at 7:50 PM #21057
    Lake
    Participant

    I just bought an OSSC.
    I have a SNES (pal version) and a MegaDrive with a pal/ntsc/ntscJ mode selector.
    My television is a philips model 32pfl8605h.

    I read in the wiki that default line doubling is expected to work with any television,
    but I was surprised to see “video format not supported” on my TV when I tried playing with
    the MegaDrive in ntsc/ntscj format.

    This is the format that is being displayed on the ossc:
    YPrPb 262p
    15.55Khz 59.36Hz

    With the selector switched to PAL, the television has no problems.
    The SNES also has no problems as the video format is different.

    My question is: is it normal that my television doesn’t support the
    supposedly universal line doubling format?

    Might there be something wrong with my modded MD?

    Thanks in advance.

    April 24, 2018 at 8:45 AM #21071
    Harrumph
    Participant

    I had a similar TV model before which would handle a modded SNES in NTSC mode no problem (59.53Hz), so maybe that’s about the limit for vertical refresh rate. I think you might have crossed the tolerance level for vertical refresh with that modded MegaDrive.

    A solution would be to get a Dual Frequency Oscillator, to output correct clock speed for NTSC.

    April 24, 2018 at 8:59 AM #21072
    BuckoA51
    Keymaster

    I remember encountering a Philips TV that was actually more compatible in line triple, so you should definitely give that a go too.

    April 24, 2018 at 11:32 AM #21074
    Lake
    Participant

    I’m gonna ask a very, very stupid question now but..

    There’s no way to set line triple without the remote controller, right? ^^;

    April 24, 2018 at 12:35 PM #21075
    Harrumph
    Participant

    I remember encountering a Philips TV that was actually more compatible in line triple, so you should definitely give that a go too.

    Right, I had forgotten about that, lol. Had noted it in my own initial report. 🙂

    Yes, you need a remote to access the menu to set Lx3.

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