31khz + 15khz resolutions SAME monitor? Arcade_15_31?

[jdubs]

Hey Guys

I think this is actually a problem for me with all Cave vertical shooters....the game wants 240 x 320 @ 60hz but GM gives it  664 x 496i.  This is using my Sony PVM-20L5 monitor and the arcade_15 preset.

Attached is the log. 

Any ideas on why the interlaced resolution?  The flicker drives me nuts!

Thanks,
Jim

[jdubs]

Ok, so I'm thinking that the native Cave vertical shooter resolution is 240x320 but when you let GM rotate it, 480i is the "closest" 15khz vertical resolution...right?

My monitor does 15khz and 31khz - is it possible to have GM select a 31khz resolution for games like the Cave stuff?  Something like 320 or 640 vertical lines?

-Jim

[jdubs]

I updated the title as I have a more relevant question now.

[Calamity]

You need to enable a separate range for 31 kHz. So if you go here: http://forum.arcadecontrols.com/index.php/topic,116023.0.html

You can see these two monitor definitions:

Code: [Select]

  // Arcade 15.7 kHz - standard resolution
   arcade_15
   
      crt_range0  15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 288, 448, 576


Code: [Select]

// Arcade 31.5 kHz - medium resolution
   arcade_31
   
      crt_range0  31400-31500, 49.50-65.00, 0.940, 3.770, 1.890, 0.349, 0.064, 1.017, 0, 0, 400, 512, 0, 0
You only need to stick them together:

Code: [Select]

      monitor custom
      crt_range0  31400-31500, 49.50-65.00, 0.940, 3.770, 1.890, 0.349, 0.064, 1.017, 0, 0, 400, 512, 0, 0     
      crt_range1  15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 288, 448, 576

Make sure to use "monitor custom", or the ranges won't be considered

[jdubs]

Thanks Calamity.  I think that the 15khz drivers are causing the 31khz resolutions to not be available anymore.

I've attached a couple of relevant files.

Thanks again for the help - much appreciated.

-Jim

[Calamity]

Make sure to use "monitor custom", or the ranges won't be considered

(in ume.ini)

[jdubs]

Make sure to use "monitor custom", or the ranges won't be considered

(in ume.ini)

Yes, no, for sure had it as custom.  I accidentally attached the ume.ini with arcade_15.

Not sure what to do....I assume its because the 31khz resolutions are no longer available?

[Calamity]

Not sure what to do....I assume its because the 31khz resolutions are no longer available?

These drivers are not specific for 15 kHz, no frequency is blocked or anything.

I assumed you weren't going to touch VMMaker. It was not necessary, that's why I didn't mention it. By looking at your first log, you had already suitable resolutions to be used. For instance, 664x496 could have been converted to 31 kHz simply by using the ranges I posted, just in ume.ini.

But you went forward and modified vmmaker.ini with the presets from GM, which uses a different non-compatible format, and you probably screwed the modelines you had installed previously, as your Modeline.txt file shows.

So, either go back to your previous config in vmmaker.ini, or port the ranges properly to the vmmaker format as explained here: http://forum.arcadecontrols.com/index.php/topic,116023.0.html

[jdubs]

Bingo!  Got it working....Thanks again, Calamity!

-Jim