Sony Multiscan CRT custom video_mode

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morf77
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Sony Multiscan CRT custom video_mode

Unread post by morf77 »

Posting this as a reference for those who have a similar CRT. Found a video_mode that generates some really sweet and genuine scanlines.
This works on my Sony Multiscan 400 ps and is known to work on Sony Multiscan 200sf as well:

Modeline "512x448" 18.24 512 528 576 608 448 448 451 500 -hsync

Translated to video_mode:

Code: Select all

video_mode=512,16,48,32,448,0,3,49,18240
You can see the result in this youtube video which led me to trying the video_mode out (scanlines zoomed in at 2min17):



It's odd this works so amazingly because this resolution is below anything mentioned in the manual.

ps: you will have to adjust the screen size on your display's OSD and enable forced_scandoubler/vga_scaler in the mister.ini

edit: corrected video_modeline
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jrronimo
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Re: Sony Multiscan CRT custom video_mode

Unread post by jrronimo »

That looks fantastic! I'll have to try that with some monitors I have. Thanks!
aitotat
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Re: Sony Multiscan CRT custom video_mode

Unread post by aitotat »

That mode works also on Dell P992 (it has 19" Flat Trinitron tube). I tested with SNES core since the resolution is the same. However refresh rate was 67 Hz (both MiSTer and monitor OSD showed that). Is it because i tried it on SNES core or is that video_mode string not correct (i copy pasted it to the mister ini)?
aitotat
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Re: Sony Multiscan CRT custom video_mode

Unread post by aitotat »

The translated video_mode settings are indeed wrong. It should be video_mode=512,16,48,32,448,0,3,49,18240
That gives nice 512x448 resolution @ 60 Hz.
obot
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Re: Sony Multiscan CRT custom video_mode

Unread post by obot »

I've got a Dell P991 and haven't been able to get this mode to work (I had also realized the error and tried the corrected video_mode). It may be that the P991 can't handle it, but just to double check, what were your other relevant video-related settings? Thanks.
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Re: Sony Multiscan CRT custom video_mode

Unread post by aitotat »

These settings work for me:
forced_scandoubler=1
ypbpr=0
composite_sync=0
vscale_mode=1
vscale_border=0
vsync_adjust=0

[SNES]
vga_scaler=1
video_mode=512,16,48,32,448,0,3,49,18240
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morf77
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Re: Sony Multiscan CRT custom video_mode

Unread post by morf77 »

@aitotat: thanks for correcting me, I'll edit the OP to reflect the correct video_modeline. With your corrected video_mode I can even enable vsync_adjust=2 which is amazing (makes sense it didn't work with the wrong video_mode line).
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Re: Sony Multiscan CRT custom video_mode

Unread post by flynnsbit »

This is a good one. Works great on my Sony Trinitron CRT and my NEC MultiSync XPe.
obot
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Re: Sony Multiscan CRT custom video_mode

Unread post by obot »

aitotat wrote: Tue Nov 24, 2020 2:44 pm These settings work for me:
...
Thanks, I was able to get it to work!
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Re: Sony Multiscan CRT custom video_mode

Unread post by buttersoft »

I'm very confused here. Is it possible to run Virtua Racing in MAME on MiSTer?
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morf77
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Re: Sony Multiscan CRT custom video_mode

Unread post by morf77 »

No the video is not showing a MiSTer setup. But the scanline effect is exactly the same with MiSTer.
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Re: Sony Multiscan CRT custom video_mode

Unread post by buttersoft »

I see. So what outputs at 256x224 and fits into 512x448 at an integer ratio? I think the Jotego GnG core will do that. And the Sega System 1 for wonderboy. Does the SNES normally output at that resolution too?
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morf77
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Re: Sony Multiscan CRT custom video_mode

Unread post by morf77 »

Yes that's the default output resolution for the SNES. It's also the NTSC output for the Sega Genesis/Mega CD and one of the standard resolutions of the PC-Engine/TurboGrafx-16. I'm definitely no expert at this stuff. Even cores not running this at integer scale ratio still look great to my non-expert eyes - eg the Neo Geo using this video_mode looks amazing (just because of the scanline effect it gives on this type of CRT). I've noticed some arcade cores that can't handle this video_mode but I have to do some more testing and atm unable to give you a list of which ones support it or don't.
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morf77
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Re: Sony Multiscan CRT custom video_mode

Unread post by morf77 »

Another custom video_mode I found to be working on this specific CRT is 1920x1440

Code: Select all

video_mode=1920,128,208,344,1440,1,3,56,234000
This is a pretty sweet resolution because of how it allows integer scaling on a lot of cores.
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