Build Your Own Arcade Controls Forum

Software Support => GroovyMAME => Topic started by: pakoman on August 19, 2013, 01:16:06 pm

Title: limit horizontal range to 16.1 khz?
Post by: pakoman on August 19, 2013, 01:16:06 pm

Hi.

I'm using GroovyUME with scart PAL tvs, and I'd like to limit the horizontal range to 16.1 khz becouse modelines over that are problematic with my setup. I'd like to emulate a wide range of systems from PAL amiga and Amstrad GX4000 to other using some high res interlaced resolutions as faithfully as the original in a resolution basis.

For instance Turbo grafx 16 goes out of sync as it tryes a 16.6 khz resolution.

I don't know if I need to modify any other value. Is there any generic CRT monitor settings for a setup like this, a plain scart tv bought in Spain? Or a simple way to limit horizontal frequency to 16.1?

Thanks.

Title: Re: limit horizontal range to 16.1 khz?
Post by: Calamity on August 20, 2013, 11:02:32 am

Hi pakoman,

You just need to create a custom crt_range, limiting the horizontal frequency range to whatever you want:

monitor custom
crt_range0 15625-16100, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 192, 288, 448, 576

Here I've set the highest value to 16.1 kHz.

Title: Re: limit horizontal range to 16.1 khz?
Post by: pakoman on August 20, 2013, 04:38:48 pm

Thanks, I didn't think it was so easy :)