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Sony Multiscan CRT custom video_mode

Posted: Thu Nov 19, 2020 12:54 pm
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

Re: Sony Multiscan CRT custom video_mode

Posted: Thu Nov 19, 2020 8:11 pm
by jrronimo
That looks fantastic! I'll have to try that with some monitors I have. Thanks!

Re: Sony Multiscan CRT custom video_mode

Posted: Mon Nov 23, 2020 5:32 pm
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)?

Re: Sony Multiscan CRT custom video_mode

Posted: Tue Nov 24, 2020 1:10 pm
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.

Re: Sony Multiscan CRT custom video_mode

Posted: Tue Nov 24, 2020 2:22 pm
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.

Re: Sony Multiscan CRT custom video_mode

Posted: Tue Nov 24, 2020 2:44 pm
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

Re: Sony Multiscan CRT custom video_mode

Posted: Tue Nov 24, 2020 2:51 pm
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).

Re: Sony Multiscan CRT custom video_mode

Posted: Tue Nov 24, 2020 9:59 pm
by flynnsbit
This is a good one. Works great on my Sony Trinitron CRT and my NEC MultiSync XPe.

Re: Sony Multiscan CRT custom video_mode

Posted: Tue Nov 24, 2020 10:27 pm
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!

Re: Sony Multiscan CRT custom video_mode

Posted: Tue Nov 24, 2020 10:47 pm
by buttersoft
I'm very confused here. Is it possible to run Virtua Racing in MAME on MiSTer?

Re: Sony Multiscan CRT custom video_mode

Posted: Tue Nov 24, 2020 11:39 pm
by morf77
No the video is not showing a MiSTer setup. But the scanline effect is exactly the same with MiSTer.

Re: Sony Multiscan CRT custom video_mode

Posted: Wed Nov 25, 2020 5:24 am
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?

Re: Sony Multiscan CRT custom video_mode

Posted: Wed Nov 25, 2020 6:48 am
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.

Re: Sony Multiscan CRT custom video_mode

Posted: Thu Dec 31, 2020 5:22 pm
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.