Help using crt_range0 in certain ways

[m.andrade1]

Hello Guys
Is there a way to use a twiked resoluion like 320x240 for example and get the vales to clipboard with arcade_os and use those vales aquired on crt_range0 only on games with 240 lines thru a specific ini file, and keep the auto for all rest.

Thanks
Marcos

[Calamity]

You don't need a specific ini. What you have to do is to put the adjusted timings into a crt_range that only applies to the desired vertical resolution range, e.g.:

crt_range0  15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 239, 448, 576
crt_range1  15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 240, 240, 448, 576
crt_range2  15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 241, 288, 448, 576

Above, crt_range1 is where you'll put your ajusted timings. Because you define the progressive lines min and max as 240 it will only apply to that vertical resolution.

[m.andrade1]

Hello Calamity
Thanks you so much for your answer!
Thatīs exactaly what i need, because i did a RGB osd mod into a Philips that has an espetacular image, but it has a little geometry issue on top of the screen, so i had to overscan the top a little, it affects those 240lines games, but for 224lines the image is perfect, so thatīs why i did some tweak on arcado_os tool, so those 240lines could fit  on screen.
In theory can do it with any other resolution right including 248 or 256 lines games right ?

Images from rgb mod here: https://photos.app.goo.gl/ROlDzMpabIOwCrV42

Thanks a lot Calamity
Marcos

[m.andrade1]

Hello Calamity
Thanks you so much for your answer!
Thatīs exactaly what i need, because i did a RGB osd mod into a Philips that has an espetacular image, but it has a little geometry issue on top of the screen, so i had to overscan the top a little, it affects those 240lines games, but for 224lines the image is perfect, so thatīs why i did some tweak on arcado_os tool, so those 240lines could fit  on screen.
In theory can do it with any other resolution right including 248 or 256 lines games right ?

Images from rgb mod here: https://photos.app.goo.gl/ROlDzMpabIOwCrV42

Thanks a lot Calamity you saved my mod !
Marcos

[marcelosofth]

Hellou Mr. Calamity, I have already done several types of tests, suspecting that it was my PC, Video Card, but the problem continues, the image is perfect in colors, contrast and brightness, but when a high brightness image comes or the screen totally full the brightness drops to 30%, something unacceptable, my last suspicion is that the monitor can not withstand a Cinescope of '21 inches and only one of '20 normal, is it?

Ps. See the 2 images below, with the black-bordered screen the image is perfect in its fullness of brightness, contrast and color, but when it fills the wilted brightness.

[buttersoft]

..., the image is perfect in colors, contrast and brightness, but when a high brightness image comes or the screen totally full the brightness drops to 30%, something unacceptable, my last suspicion is that the monitor can not withstand a Cinescope of '21 inches and only one of '20 normal, is it?

EDIT: I see you did post this in the monitor/video forum, so I've moved my reply into that thread

http://forum.arcadecontrols.com/index.php/topic,156501.0.html

[m.andrade1]

Hello Calamity
Thanks a lot, you sugestion works great !
Those 240lines games worked beaultifull even with the tv in onverscan, after the adjust on arcade_osd it runs great with perfect fit !
Only having a hard time to adjust those 256lines games, seems even with tweaking on arcade_osd itīs impossible to get it fit on screen, if you puss to hard on timings it skring the screen to much, iīm trying to do a middle range adjust, but no way.
Do you have any suggestion for those based 256lines games.

Thanks a lot
Marcos

[buttersoft]

You can't touch the vertical size with the PC, you have to adjust it via the monitor itself.

[m.andrade1]

Hello buttersoft
Thanks you so much for you answer.
Thatīs what I thought, because the tv is already overscanned to avoid the issue on top, 240lines could be fit, but 256 lines is almost impossible, tried almost every adjust with arcade_osd just to try to improve at least the fit, but now way.
Iīm thinking in reduce the max lines, like 242 or 248 but will have to live with the re-scale for those 256lines games.
Do you have any suggestion to try to anchive the best settings without interlace the pic.

Thanks a lot
Marcos

[buttersoft]

Use native (super) resolutions where possible, and where not possible, use a gamename.ini file with the core switchres options section from your full mame.ini file transposed into it. Leave modeline generation on but set the resolution line (lower down the mame,ini) to 2560x240 or whatever.


I think that should work.