Pc analog input questions

NewHome › Forums › OSSC, OSSC Pro and DExx-vd isl › OSSC – Discussion and support › Pc analog input questions

Tagged: 

Viewing 5 posts - 1 through 5 (of 5 total)
  • Author
    Posts
  • February 9, 2019 at 8:42 AM #25160
    Arn
    Participant

      Hi

      I plan to buy the ossc for my retro pcs. I would like to cover the 90s, dos/windows, but my modern monitor does not have analog input.

      It looks fine for the vga input, but i did not find too much information about the higher, and the trickier vesa resolutions. Many demos uses special vesa modes, eg 512×384, 400×300, and i also would like to use for windows with 1024×768.

      Can these modes work fine? Thx!

      February 9, 2019 at 3:11 PM #25162
      nmalinoski
      Participant

        Someone more knowledgeable can correct me, but I expect the OSSC would digitize these resolutions just fine; however, I’m not sure that the 512×384 or 400×300 modes would be recognized by your monitor. The OSSC might be able to line-double 512×384 to 1024×768, but 400×300 is more of an oddball.

        I have an old PC in the garage that I could test your use case with. What version(s) of DOS are you running, and which games?

        February 9, 2019 at 7:14 PM #25163
        marqs
        Participant

          If I recall correctly, VESA modes like 320×200 and 400×300 were doublescanned internally (otherwise they would have required a multisync monitor) so OSSC should treat them like 640×400 or 800×600.

          February 9, 2019 at 10:54 PM #25166
          Arn
          Participant

            ive checked a riva128 vesa bios (3.0):

            640×400 70hz
            over this everything 60hz
            below this doublescanned (400×300 – 800×600 etc)

            my dell 2007fp shows every 200, 400 lines as 720×400 70hz.

            can the ossc handle higher res inputs, eg 1280×1024?

            ***

            i tried my display (lg 34uc88) with the nvidia control panel custom resolutions – it supports every modes from 50hz to 70hz. i did not think, it is so flexible.

            February 12, 2019 at 4:52 PM #25183
            Anonymous

              The OSSC will handle higher resolutions as pass through, but does a great job. 1280×960, 1280×1024, 1280p, 1080i/p – I’ve tested them all, all work great, and splitting the signal directly to a low-latency PC monitor or through the OSSC to a separate low-latency HDMI screen, there is no input delay.

            • Author
              Posts
            Viewing 5 posts - 1 through 5 (of 5 total)
            • You must be logged in to reply to this topic.