Custom HDMI video modes test

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ijor
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Custom HDMI video modes test

Postby ijor » Tue Oct 09, 2018 3:21 pm

This is a custom HDMI video mode that I would like to use on the ST core. It is a slight modification of the standard 720x576 x50Hz mode. It works on all the monitors I tested, but this certainly doesn't mean it works on every single monitor or TV. I would like some feedback to see how much this is supported or not.

If you are willing to test, please download the attached zip file and install the RBF core contained on the MiSTer. The core just displays a color bar pattern, nothing else.

Note that it is a 50Hz video mode. If your monitor doesn't support 50Hz at all, it is very unlikely that this will work.

The core doesn't have any fall back to a different video mode. If your monitor doesn't support this mode you won't be able to see the OSD. You then would need to reset the MiSTer manually, or operate the OSD blindly if you remember the keystrokes to change the core. If this is a problem for you, don't perform the test.

If you perform the test, please post a brief note with the results. Thanks
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Re: Custom HDMI video modes test

Postby breiztiger » Tue Oct 09, 2018 4:15 pm

hi

work ok on my Samsung 34SE790C

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Re: Custom HDMI video modes test

Postby Sorgelig » Tue Oct 09, 2018 4:43 pm

Standard MiSTer API supports custom modes without limits.
So, instead of special RBF, you can define parameters in MiSTer.ini file.

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Re: Custom HDMI video modes test

Postby yarko » Tue Oct 09, 2018 4:57 pm

without problem with TV LED Sharp LC-40CFE4042E
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Re: Custom HDMI video modes test

Postby BBond007 » Tue Oct 09, 2018 6:17 pm

It looks about perfect on my Samsung monitor. S27B750V

There is a very small white boarder around the entire screen that I don't see present in Yarko's pic.

I'll attach a pic but first I need to get my phone to charge.
Last edited by BBond007 on Tue Oct 09, 2018 6:23 pm, edited 1 time in total.

ijor
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Re: Custom HDMI video modes test

Postby ijor » Tue Oct 09, 2018 6:21 pm

Sorgelig wrote:Standard MiSTer API supports custom modes without limits.
So, instead of special RBF, you can define parameters in MiSTer.ini file.


I know, and that is great. But for this purpose, I thought that for the end user it might be easier just to load a special core instead of messing with the config files.

BBond007 wrote:It looks about perfect on my Samsung monitor.
There is a very small white boarder around the entire screen that I don't see present in Yarko's pic.


Yes, it should be a small white box around the whole screen. It is not very important if it's present or not. What matters is if the monitor syncs at all with the video mode or not.

Thanks you everybody for the tests.

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Re: Custom HDMI video modes test

Postby Sorgelig » Tue Oct 09, 2018 6:48 pm

Anyway, it's wrong direction.
Core should work with standard resolutions by default. For smooth scroll and VSYNC lock, there is a vsync_adjust option. If enabled and TV/Monitor supports it, then everything will be smooth like on original computer connected to CRT.
If core will require special resolution support, then it will be bad as it will break the MiSTer philosophy of plug-and-play.

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Re: Custom HDMI video modes test

Postby gnasher666 » Tue Oct 09, 2018 8:20 pm

Image from my S34E790C

If it's still needed.

IMG_20181009_211559.jpg
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ijor
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Re: Custom HDMI video modes test

Postby ijor » Tue Oct 09, 2018 8:57 pm

Sorgelig wrote:Anyway, it's wrong direction.
Core should work with standard resolutions by default. For smooth scroll and VSYNC lock, there is a vsync_adjust option. If enabled and TV/Monitor supports it, then everything will be smooth like on original computer connected to CRT.
If core will require special resolution support, then it will be bad as it will break the MiSTer philosophy of plug-and-play.


Well, it is your opinion that it is the wrong direction. You have to respect others. Anyway, I didn't say that it will be the default and only resolution. It will be an option.

It is not exactly the same as the vsync_adjust switch. I have problems with that on some monitors, seems not every monitor accepts an arbitrary pixel clock.

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Re: Custom HDMI video modes test

Postby Sorgelig » Tue Oct 09, 2018 9:00 pm

I'm not a Microsoft and there is no WHQL certification :)
You are free to do whatever you want.

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Re: Custom HDMI video modes test

Postby mattsoft » Wed Oct 10, 2018 12:28 am

Worked surprisingly fine on a North American Sony PlayStation 3D TV which is sort of an oddball HDMI monitor. Anyway, picture attached.
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Re: Custom HDMI video modes test

Postby witchmaster » Thu Oct 11, 2018 10:03 am

Works perfectly on my Philips 42PF8404H/12 (PAL). The TV is about nine years old I think.

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Re: Custom HDMI video modes test

Postby uigiflip » Fri Oct 12, 2018 10:55 pm

works on avermedia gc550 live gamer extreme , video card capture device

https://gaming.youtube.com/watch?v=SI8fX8kbKkc
Vampire 500 V2+, Mister, FPGA Replay + 68060 Daughterboard

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Re: Custom HDMI video modes test

Postby msamiullah » Sat Oct 13, 2018 12:13 am

is it possible to output 240p via HDMI ?


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