Software Support > GroovyMAME
SCART CRT TV And GroovyMAME Thread 2
Paradroid:
--- Quote from: lettuce on January 26, 2012, 02:52:08 pm ---i must say all the hype that surrounded the Trinitron screen is well deserved!
--- End quote ---
Judging by your photos, I'd have to agree! Looks like it produces a most excellent image.
I'm looking for a Sony but it's tricky in Australia. There's a flood of Sony's on eBay but most only have yellow/red/white RCA connections as opposed to RGB SCART. I guess I'll have to get intimate with model numbers and ask the sellers to take photos of the back panels.
Anyway, congratulations! Nice find!
--- Quote from: lettuce on January 26, 2012, 02:52:08 pm ---the only negative thing i can say about the Sony's display so far is it could do with being ever so slightly rotated anti-clockwise
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Hmm, almost every TV I've tried has had this to a varying degree. I can tell because the very top line on the screens never lines up with the black screen mask PERFECTLY. Most of the TVs I've tried have Phillips tubes though. Interesting that Sony does it too, although, I'm sure this varying between actual production units rather model numbers.
--- Quote from: lettuce on January 26, 2012, 02:52:08 pm ---i do this via the service menu of the Sony (which i dont have atm)
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You'll need to become good friends with that Service Menu to play R-Type, et al. :) You'll probably need to use the remote control to navigate. Honestly, I'm surprised you've gotten as far as you have without messing about with Service Menus. Lots of the TVs I've tried need some full-on tweaking before the image starts to looks decent. Some of the Loewes I've tried have been horrendous before I've corrected the geometry.
It's a pain to have to adjust the settings in between games but it's a small price to pay for arcade perfect CRT gaming. :) Trust me, you'll get really quick at it.
lettuce:
--- Quote from: Calamity on January 26, 2012, 04:49:20 pm ---
--- Quote from: lettuce on January 26, 2012, 04:29:59 pm ---So any game that has a res greater than 256 lines on the vertical will always have overscan?
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Sure.
--- Quote ---Is there a way i can 'trick' groovymame into display these game so that fit into my display without having to alter the vertical adjust through the TV service menu??
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Yes, you can change this value (active lines limit), so that anything above 256 will be interlaced + stretched
15625-16200, 49.50-65.00, 3.500, 4.7000, 9.500, 0.064, 0.260, 1.200, 0, 0, 256, 448
--- Quote ---but what values do i have to write down for the monitor_specs line, and surely if ive only edited a few video resolutions how is this changing/altering the monitor_spec line within the mame.ini file?
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It's very easy, once you have a resolution centered, go both into horizontal and vertical geometry submenus. You'll see the values you need on the right of each line, so:
H Front porch
H Sync pulse
H Back porch
... correspond with these ones (same order):
15625-16200, 49.50-65.00, 3.500, 4.7000, 9.500, 0.064, 0.260, 1.200, 0, 0, 256, 448
... same for vertical values:
15625-16200, 49.50-65.00, 3.500, 4.7000, 9.500, 0.064, 0.260, 1.200, 0, 0, 256, 448
So the meaning of all this is not to center a particular resolution (that is overriden anyway by GroovyMAME).
What we do is to ensure that all the modelines recalculated from that monitor_specs line are similar to the one you just centered with Arcade_OSD (which values you've obtained).
--- Quote ---maybe a guide is in need for using Arcade_OSD correctly?
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Definitely, you'll probably have some news soon.
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Ok cheers, that explains it a bit more, but just to clarify something, using the 288x224 (rolling thunder) i have edited the setting as best to fill the screen, now in the horizontal geometry submenu i have:
H Front Porch>>>>>>>>>>>3.834
H Sync Pulse>>>>>>>>>>>3.834
H Back Porch>>>>>>>>>>>10.224
So i should change the monitor_specs line to reflect this right....
15625-16200, 49.50-65.00, 3.834, 3.834, 10.224, 0.064, 0.260, 1.200, 0, 0, 288, 448
But when i go to a different video resolution and change the values in the horizontal geometry submenu so it fits the screen, that will give me 3 competely different H Front Porch, H Sync Pulse and H Back Porch vaules that i would need change in the monitor_spec line, and thus will give me another monitor_spec line??
I have noticed that RoadBlasters which uses 336x240 gives me borders either side of the screen, but when i load that resolution up in Arcade OSD it fills the screen out and there is no borders, so how come there is when running the game?
lettuce:
--- Quote from: Paradroid on January 26, 2012, 05:00:22 pm ---You'll need to become good friends with that Service Menu to play R-Type, et al. :) You'll probably need to use the remote control to navigate. Honestly, I'm surprised you've gotten as far as you have without messing about with Service Menus. Lots of the TVs I've tried need some full-on tweaking before the image starts to looks decent. Some of the Loewes I've tried have been horrendous before I've corrected the geometry.
It's a pain to have to adjust the settings in between games but it's a small price to pay for arcade perfect CRT gaming. :) Trust me, you'll get really quick at it.
--- End quote ---
Yeah i need to find out what the service menu code is for this sony, a quick look on google hasnt come up with anything yet, where do you usually look for your codes? To be fair the service menu scares the crap out of me, the only things i dare change is the screen size and shift the picture to the left and right? Do you usually tweat more than this then??
The main problem im going to have is i have my NTSC SNES connected up to this TV aswell, and while that displays more or less perfectly (it could do with being shifted over the the right abit) if i start changing it for MAME then it will mess up the setup for the SNES :(
Calamity:
--- Quote ---But when i go to a different video resolution and change the values in the horizontal geometry submenu so it fits the screen, that will give me 3 competely different H Front Porch, H Sync Pulse and H Back Porch vaules that i would need change in the monitor_spec line, and thus will give me another monitor_spec line??
--- End quote ---
Well that's true, because you can only increase values by a character (ch) at a time, so that numbers jump specially for lower resolutions. In order to get more accurate values, try centering a mode with the highest horizontal resolution possible (720x480i is fine). You'll probably need to fine tune those values a little bit until you find the sweet spot.
However, I was recommending you trying Arcade_OSD adjustments in order to get the minimum vertical back porch that your monitor is happy with.
Paradroid:
--- Quote from: lettuce on January 26, 2012, 05:12:02 pm ---Do you usually tweat more than this then?
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Oh yeah! I love to have a play with everything. ;) You should be fine if write down the original values before changing anything. Stick to the H & V size and position controls and then branch out if you need to. There are heaps of sites out there with service manuals that tell you all about the Service Menus for particular TVs. Maybe try searching for the chassis number instead of the actual TV model number?
--- Quote from: lettuce on January 26, 2012, 05:12:02 pm ---The main problem im going to have is i have my NTSC SNES connected up to this TV aswell, and while that displays more or less perfectly (it could do with being shifted over the the right abit) if i start changing it for MAME then it will mess up the setup for the SNES :(
--- End quote ---
Well, that makes the decision for you: get your TV looking PERFECT for the SNES using the Service Menu geometry adjustments. Then, use Arcade_OSD to discover the correct values and then setup your monitor_spec line accordingly, yes?
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