Software Support > GroovyMAME
SCART CRT TV And GroovyMAME Thread 2
lettuce:
Quick one, should we be leaving the 'monitor_specs' line in the VMMaker.ini file the default value?.....
15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448
As i have used Arcade_OSD and selected 640x480 60i (desktop res) and altered the values so it fits my display as best as possible, which gives me this 'Monitor_specs' line...
15625-16200, 49.50-65.00, 4.121, 4.710, 9.420, 0.065, 0.163, 0.784, 0, 0, 288, 448
i have added this to the VMMaker.ini file and ran VMMaker.exe to generate new modeline, as this is whats run as soon as windows loads right?
Calamity:
--- Quote from: lettuce on January 27, 2012, 04:42:57 pm ---It seems the lower the vertical back porch setting the greater overscan on the vertical it gives you, which is the opposite of what i want really, i dont want any overscan on the vertical
--- End quote ---
Well that's definitely interesting as your TV seems to dynamically adjust v-amp depending of the number of lines?
But is it overscanned or just shifted up?
If you do the opposite (increasing vertical back porch) can you make the 256 lines mode fit the screen?
--- Quote ---i have added this to the VMMaker.ini file and ran VMMaker.exe to generate new modeline, as this is whats run as soon as windows loads right?
--- End quote ---
Yes, replace the default values with the ones you found and regenerate modelines. Use those values in mame.ini too.
lettuce:
Well using 256x256, the highest i can go on v back porch is 1.144 an more above that and i just get a scrambled screen all the time, and i cannot get it to fit the screen on the vertical :(
Something i have noticed is since i used 640x480 and adjust settings in Arcade_OSD so it fits the screen as best i can, when i run Final fight now the game is overscanned on the vertical where before it wasnt!, how can this be as i though you werent able to change the overscan on the vertical?
EDIT: i think its just shifting the screen down, as i just change the vertical back proch from 0.784 to 1.200 and i noticed it was moved down
Is it possible to add a 'Monitor_specs' line to each game.ini file, so it loads that 'monitor_spec' line when loading the game?
Calamity:
--- Quote from: lettuce on January 27, 2012, 05:23:39 pm ---Well using 256x256, the highest i can go on v back porch is 1.144 an more above that and i just get a scrambled screen all the time, and i cannot get it to fit the screen on the vertical :(
--- End quote ---
Yeah, that's because your reaching your top horizontal frequency, write down the hfreq value right before this happens and use it for your ranges.
--- Quote ---Something i have noticed is since i used 640x480 and adjust settings in Arcade_OSD so it fits the screen as best i can, when i run Final fight now the game is overscanned on the vertical where before it wasnt!, how can this be as i though you werent able to change the overscan on the vertical?
--- End quote ---
Don't use the desktop resolution for adjustments, it usually can't be edited, I'm surprised you could do real-time adjustments (that's why I recommended the 720x480 at first hand).
You're not usually able to affect v-amp with modelines, but these Sony TVs definitely do something with it, it's not the first time I've heard this but couldn't get it confirmed.
Calamity:
--- Quote from: lettuce on January 27, 2012, 05:23:39 pm ---EDIT: i think its just shifting the screen down, as i just change the vertical back proch from 0.784 to 1.200 and i noticed it was moved down
--- End quote ---
You need to test this with a 256 lines mode, adjusting your system menu so that you compress the picture vertically to get all the lines in. Then find the lowest value for the vertical porch were you start loosing lines at the top or the picture top gets distorted. That's the value we're looking for.
The aim of this is to find a value that gets all the games centered vertically.
--- Quote ---Is it possible to add a 'Monitor_specs' line to each game.ini file, so it loads that 'monitor_spec' line when loading the game?
--- End quote ---
Of course it's possible but that's exactly what we're trying to avoid! :)
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