Connecting a DOS PC

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  • February 22, 2026 at 6:13 AM #68771
    SerialDreams
    Participant

      Apologies in advance as I’m sure it’s been asked before, even if of something similar but different.

      I’ve been trying to capture the output of my DOS PC ultimately for streaming. When I switch AV3 (VGA, PC In), my TV reports the signal as incompatible.

      February 22, 2026 at 9:50 AM #68772
      Zacabeb
      Participant

        What refresh rate is reported by the OSSC? If the PC outputs at 70 Hz, the TV as well as capture devices may not like the resulting signal.

        They may also not like the output from an OSSC Classic or an OSSC Pro in pure line multiplier mode if the resulting output resolution is too far away from a standard TV or computer resolution.

        If you have an OSSC Pro, using scaler mode and setting frame lock to 60 Hz should resolve the issue, at the cost of judder if the input has a different refresh rate.

        February 22, 2026 at 3:24 PM #68773
        SerialDreams
        Participant

          I should have mentioned in my original post that my TV has a VGA input and that’s how I’ve been using my DOS PC.

          I’ve heard that the OSSC can detect and display DOS, but it requires tinkering.

          I have an OSSC v1.8 with firmware v1.2

          March 13, 2026 at 10:18 AM #68897
          BuckoA51
          Keymaster

            So you’re taking the output of OSSC and using a DAC to get it back into your TV?

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