Software Support > GroovyMAME
SCART CRT TV And GroovyMAME Thread 2
Calamity:
--- Quote ---So i should leave "MonitorType" in VMMaker as Custom then and just change it to cga in the mame ini file?
Do i also need to add that monitor_specs_0 line to the VMMaker.ini file aswell?
--- End quote ---
In your case it's enough to add it to mame.ini
--- Quote ---Ok i have loaded up Arcade_OSD, have selected the screen res 384x224 then press enter to view fullscreen but Arcade_OSD crashes any ideas why this is?
--- End quote ---
:badmood: I need to figure out why this silly program still crashes in some systems...
--- Quote ---have attached my whole modeline.txt file, have noticed that it doesnt have an 800x600 screen res and jumps from 792x592 to 1280x240 why is this. As if i use quickres tool 800x600 is in the list but if i select it i lose singal on my TV, i though CRT Tv's could do up to 1024x768 interlaced?, can TV's do 800x600 progressivly or is that res interlaced aswell usually?
--- End quote ---
800x600 is not created as it falls out the defined monitor specs (=usual specs for CRT TVs). See how 792i is only possible because it's 50Hz. Don't use the resolutions labelled as 'native', they are created by the driver, that 800x600 progressive resolution you're testing might easily be 38 kHz (!!).
--- Quote ---Have noticed that windows has selected the TV as default monitor but it has selected the refresh rate a 200Hz, should this be left at 200hz or shouldi change it to 60hz??
--- End quote ---
Yep, just ignore that.
I'd tell you to use Arcade_OSD in order to set the resolution for your desktop, provided it didn't crash.
--- Quote from: lettuce on December 17, 2011, 03:01:14 pm ---to the MAME.ini file then the display is more or less perfect with no over scan now, but the top and bottom of the screen has a very slight boarder now, what parts of the monitor_spec line control the vertical stretch?
--- End quote ---
Sounds good.
There's no way of correcting vertical amplitude by software, that's a limitation of CRT technology. You'll need to access your service menu in order to adjust that.
lettuce:
--- Quote from: Calamity on December 17, 2011, 05:12:09 pm ---Yep, just ignore that.
I'd tell you to use Arcade_OSD in order to set the resolution for your desktop, provided it didn't crash.
--- End quote ---
Yeah just seems to crash all the time so can set it up with Arcade_OSD :(
--- Quote from: Calamity on December 17, 2011, 05:12:09 pm ---Sounds good.
There's no way of correcting vertical amplitude by software, that's a limitation of CRT technology. You'll need to access your service menu in order to adjust that.
--- End quote ---
Oh ok, i thought it would be possible as when i added the monitor_specs line (monitor_specs_0 15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448) to the mame.ini file to got reed of the overscan i originally had at the top and bottom of the screen, i though it might be possible to have tweaked one of the values to add just a slight over scan?
So i dont need to change any other settings in the mame.ini file other than the monitor type 'CGA'?
Calamity:
--- Quote from: lettuce on December 17, 2011, 06:54:44 pm ---So i dont need to change any other settings in the mame.ini file other than the monitor type 'CGA'?
--- End quote ---
Just that and the monitor_specs line.
You can remove horizontal overscan with monitor_specs line, but not vertical.
lettuce:
--- Quote from: Calamity on December 17, 2011, 07:03:57 pm ---
--- Quote from: lettuce on December 17, 2011, 06:54:44 pm ---So i dont need to change any other settings in the mame.ini file other than the monitor type 'CGA'?
--- End quote ---
Just that and the monitor_specs line.
You can remove horizontal overscan with monitor_specs line, but not vertical.
--- End quote ---
Ok thanks.
Regarding the Bush TV not display a correct picture, this has now been sorted by changing the refresh rate of windows from the 200hz it was set at to 60hz. Strange that the Sharp TV didnt have a problem displaying a picture in windows at the 200hz but the Bush did.
Also i have noticed that the TV has a sort of shimmering effect to it, now when i built a cab years ago that had a scart tv in i was using a ArcadeVGA card from Ultimarc and had the shame shimmering effect, but in install the TriSync config utility that it on the ultimarc sit sorted this out. Would it be safe to use this in conjuction with the CRT_Emudriver 6.5 drivers to see if it helps?
Have you seen the arcadeperfect program on the ultimarc site,
http://www.ultimarc.com/arcadeperfect.html
would this help with the vertical scan?
Calamity:
If I get you right the shimmering effect is due to interlacing, and you can't remove it. Just use progressive modes for your games. The tri-sync utility won't help as your TV is std-res, apart from the fact that it could mess with the driver's registry.
The Arcadeperfect utility only works with the AVGA 3000 and will be tied to the same limitations because these are inherent to CRT technology.
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