Software Support > GroovyMAME
Monitor presets
Dochartaigh:
To jump onto Phil's bandwagon, how would I go about creating my own timings for my Sony BVM D-Series multiformat monitor? I would ideally like 3x resolutions: 15khz for 240p, 480p for 480p, then a 720p or 1080i setting simply for a decent desktop size (as I don't think there's any arcade games which are in 720p/1080i so that would only be used for the desktop and would DRASTICALLY help with setting up MAME front ends which I'm majorly struggling with in 640x480).
I know Calamity has a tutorial in the beginning of this topic of how to load all those listed presets (for different popular/commonly-used monitors) into vmmaker.ini (and then vmmaker edits the mame.ini for you I believe), BUT how does one go about creating (they're called "modelines", correct?) their own specialized modelines for a specific monitor which isn't listed?
I've dealt with video timings on Raspberry Pi's before (with the RGB output boards), so I'm a little bit familiar with the front/back porch settings used to center the image and simple things like that, but that's the limit of my technical experience (like most people I think, this isn't something we're familiar with whatsoever).
So if I know the default/stock 15khz "arcade_15" setting works on my monitor (needs to be centered though which I can tweak myself), so I can use that as my modeline for 15khz. Then would I just borrow a line from the "arcade_31" setting from another monitor for my 480p resolution mode? Load both of those into vmmaker.ini under my own profile (which I'll name "D20F1U" for my monitor), then track down some arcade games which were natively in 480p and see what happens? Am I missing anything or is that the basic gist?
Obiwantje:
I am trying to create 3 custom lines based on the following specs - and for the life of me I can not work out the math - any body able to give me hand?
Calamity:
--- Quote from: Obiwantje on January 27, 2018, 11:45:21 pm ---I am trying to create 3 custom lines based on the following specs - and for the life of me I can not work out the math - any body able to give me hand?
--- End quote ---
I've worked out these ranges that should be in spec according to your chart.
crt_range0 15500-16000, 50.00-61.50, 3.150, 5.000, 6.550, 0.256, 0.192, 1.024, 0, 0, 192, 288, 448, 576
crt_range1 24430-25230, 50.00-61.50, 0.950, 4.000, 3.550, 0.240, 0.160, 1.040, 0, 0, 384, 400, 768, 800
crt_range2 31000-32000, 50.00-61.50, 0.950, 3.500, 2.550, 0.288, 0.096, 1.056, 0, 0, 400, 512, 0, 0
Bear in mind that those timing charts are usually not optimized at all. It's usually possible to squeeze the monitor's operational range a bit more by optimizing the vertical porches, and still be safe.
Obiwantje:
Woohoo!
MANY thanks Calamity - I am going to try these out and revert back to you - thank you for all the great tools you made for us!
P.H.U.:
Hi Calamity,
Suspect that I need custom timings for my Neotec NT-33c monitor. Please help with this. The closest to a manual I could find for this monitor is for the NT-35c, which should be just the larger sized version. I have tried using the presets: generic_15, arcade_15, & arcade_15ex. No luck. Should be noted that I am chaining the video output through a J-Pac. Without the J-Pac, the video is too dim but flickering is gone.
Windows and thus my front end (Attract Mode) are very flickery. Darn near unusable. I have set the resolution of my Attract Mode FE graphics to 640x480 in AM's settings. Still things are bad as it seems to be pervasive to any screen in Windows. Games once launched from AM or the command prompt play beautifully in fullscreen using Super Resolutions however. Thanks!
Nevermind. Doesn't seem to be a problem if by-passing J-Pac and its video amp.
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