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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    VGA666+PVM composite sync (csync)

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    retropievgavga666crt
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    • W
      wwweh
      last edited by wwweh

      Hi, I recently bought a VGA666 hat with the intention of hooking it up to my sony PVM.

      I changed the config to include

      dtoverlay=vga666
      dpi_output_format=0x105
      

      Which I read would enable csync on GPIO1/PIN28. But it only syncs for a fraction of a second then loses the vertical sync.

      alt text

      I've tried other pins and they don't work. If I remove the dpi_output_format it doesn't sync at all.

      Anyone have any ideas?

      W 1 Reply Last reply Reply Quote 0
      • W
        wwweh @wwweh
        last edited by

        To anyone having the same issue, I needed to cut the HSYNC trace on the vga666 board for the csync to be strong enough to control the PVM

        1 Reply Last reply Reply Quote 0
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