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Author Topic: 25 khz Modeline on 15 khz - 31 khz Dual Monitor  (Read 357 times)

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25 khz Modeline on 15 khz - 31 khz Dual Monitor
« on: January 12, 2019, 03:04:03 pm »

I have a monitor that is compatible with the 15 khz - 31 khz dual profile. It works great, but 25 khz games such as Paperboy look letterboxed due to the 384 vertical size.

Is there a way to stretch these games vertically to better fill the screen?

Thank you


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Re: 25 khz Modeline on 15 khz - 31 khz Dual Monitor
« Reply #1 on: January 13, 2019, 02:04:31 pm »
You have to tell GM you don't want 384p.

You do so by adjusting the line limits of your crt ranges.

Currently you probably have a 31 kHz that allows 320p-480p. Fix that to only allow 400p-480p. GM will adapt to the new situation by stretching the games over the most suitable resolution.
Important note: posts reporting GM issues without a log will be IGNORED.
Steps to create a log:
 - From command line, run: groovymame.exe -v romname >romname.txt
 - Attach resulting romname.txt file to your post, instead or pasting it.

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