Software Support > GroovyMAME

SCART CRT TV And GroovyMAME Thread 2

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lettuce:

--- Quote from: apfelanni on January 26, 2012, 05:41:16 pm ---there are several codes related to the build in chassis . try standby , remote : I+ , 5 , Vol+ , picture . if tt appears on the screen press menu .
--- End quote ---

Found the chassis its an FE-1 chassis and the code to enter the service menu is:

Turn the set on and then put into standby
Press the On Screen Display button
Press the "5" button
Press the "VOLUME +" button
Press the "TV" button
Use buttons "^"(Green) and "v"(Blue) on the remote control to navigate the service menu
Press YELLOW button to enter required menu
Use buttons "<" and ">" to adjust the selected data
Press the "MENU" button to store the data and exit

 :applaud:

Paradroid:

--- Quote from: lettuce on January 26, 2012, 07:00:11 pm ---Found the chassis its an FE-1 chassis
--- End quote ---

Sweet! This chassis comes highly recommended.

lettuce:
Is there really any point to altering any of the vertical geometry settings in Arcade_OSD, apart from V center if need be, as you can change the size of the vertical lines to fit your display??


--- Quote from: Calamity on January 26, 2012, 06:00:55 pm ---If you start experiencing issues like that one with tnmt after messing with Arcade_OSD, try running VMMaker and restarting to regenerate all modelines.

--- End quote ---

Have tried what you suggested and TMNT still only displays the text window of the nag screen and the a massive black border at the top of the screen, its strange there is a slight black border on the left and side but when sprites come in from the left hand side they over lap this black border!?

Calamity:

--- Quote from: lettuce on January 27, 2012, 04:10:34 pm ---Is there really any point to altering any of the vertical geometry settings in Arcade_OSD, apart from V center is need be, as you can change the size of the vertical lines to fit your display??

--- End quote ---

Yes, it's very important to find the minimum vertical back porch value your TV accepts, because:

- It will allow to get higher refresh rates for the same horizontal frequency (i.e. for vertical games rotated: 1942 at 60 Hz, etc.)
- If the vertical back porch is higher than necessary, the excess will go to the upper border, shifting the screen down, so the modeline generator in VMMaker/GroovyMAME will fail centering the modelines vertically: see your 256 lines mode that is missing the bottom but not the top, that's what I mean.

In your case, 8 lines vs 16 lines is a HUGE difference, go for it.

lettuce:
Well i have selected a res of 256x256 and im able to get the 'Vertical back porch' setting to go to its lowest value (0.065) with no display problem, but then if i add this into my mame.ini monitor_specs line when i load a game that fitted the screen fine before the vertical is now overscanned!?

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

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