The DFP presets are fully customizable incl. resolution and aspect. You just need to know exact timings for 1440×900@60 since it’s not a standard VESA mode.
When populated with optional parts, it additionally supports cvbs and s-video. VGA should not be connected simultaneously, however, to avoid double termination. PAL50, PAL60 and NTSC support has been verified with both interlace and non-interlace modes.
The product page doesn’t have much detail on how incoming sync is buffered and converted to HV (?) sync for VGA output. You can try adjusting “Sync opt -> TTL Hsync Vth” with RGBHV source, but without more details it’s hard to say what could be wrong if no sync is reported at all.
It sounds like the switch does not like pure composite sync for whatever reason. I’m here assuming its sync input includes 75ohm termination, otherwise the signal level may be too high for the receiving logic.
Are you sure it’s supposed to output RGB sync-on-green as the video shows this input selected?
Perhaps Hydra’s autodetection relies on status voltage on pin 8 which may not be wired in the VGA-scart cable. You could test manually selecting the input on the switch if such is supported.
You might want to wait for a few weeks as there is new prototype Extra AV Out card in making.
Have you tried if the SCART output has similar issues?
What MVS model do you have and which Supergun is used?
Maybe HDFury3 does not support the CRT modes which have high horizontal rate.
Also, which CRT output mode you have selected?
I think the feature has been only tested with analog inputs as it’s ported from OSSC Classic. It should however work as you intend if you select the standard line2x/3x above and manually set HDMI pixel decimation to 4.
Thank you, if you support also a 480i mode in line-dropping for 1080p sources, so i have not the scaler artefacts!
I’m not sure if that would be very useful in general since decimating into 540p and excluding 60 lines (plus CRT overscan) crops quite a bit content. It’d make sense only for sources that have ~900 lines of active content within 1080p.
Does the OSSC front LED blink during the cutouts, and do they occur with default settings in L3x Generic 4:3 mode? You could try setting Sync opt -> ADC PLL BW to Ultra Low which might help.
It’s just not currently included in the chip driver but the function could be copied from Classic since they use almost the same chip.
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