How to change settings if picture is out of sync? SCART TV

[Paradise]

Hi,

i have a maybe stupid question.
I have a Radeon 9250 connected to a 21" Loewe TV via a self made SCART cable.
I set "custom" in the VMMaker.ini set Windows to 640x480@60Hz, shut down, connect
the TV and power on.
First the picture was there put started scrolling.
Connecting the VGA Monitor does not work now because of 15kHz and want turn on.
I was lucky that i turned on Remote Desktop so after playing around from my other PC
i managed to get the VGA monitor to work again.

So the stupid question is: how to test settings if you can't see the picture?

[Calamity]

Not a stupid question. Well you usually start with a conservative default desktop resolution 640x480@60i (the one you tried) that is supposed to always work. If it doesn't work for you, then you basically have 2 options:

- Use a double head setup, so you always have a VGA monitor with 31 kHz video to work with, and your TV on the secondary output, and use ArcadeOSD to tweak the frequencies on the TV while having the interface on the VGA monitor. You need to create two separate desktops from Windows display properties dialog (do not clone!). After that you drag and drop ArcadeOSD's window on the TV, and use "Attach OSD to current monitor". Then you can move the window back to your VGA monitor and work from there. The only problem you might face is the card not recognizing the TV on the secondary output, and shuting the video signal (black screen). Of course this option involves some knowledge on your part on what to tweak regarding the video timings.

- Use a predefined TV standard in VMMaker, "PAL" or "NTSC" instead of "CUSTOM", just in case your TV can only deal with certain stardard.

[Sledge]

IF you set monitor = custom, did you also enter some specs in the monitor_specs0 line?
Not sure what happens if you don't...

[Paradise]

Hm, i thought TV and Monitor at the same time is not possible (was reading something like that).

BUT it killed the 21" TV. If i switch it on it immediately switch's of.
After disabling the vertical protection circuit an some measuring i found a defect resistor.
A new resistor gives me a bit more image but still the protection circuit shuts off the TV.
Looks like its the vertical deflection circuit IC and i have to order one.

But on the other TV (28") i bought for 1 Euro i have it working.
The funny thing is that you have to switch to 640x480@60 on your VGA and than you have to
shut down without an image

What i did then is to let VMMaker run again with the TV connected - right?
The output was:

616 different video modes found.

Generating dynamic mode table... 506 redundant video modes found.
Reducing mode list... 0 video modes dropped.
 110 modelines generated.

Generating inis...

 11088 .ini files generated
Games at their native refresh:             42.36%
Games at their native resolution:         75.67%

It's a TV with 50/60Hz, PAL, NTSC and SECAM.
So why this low percentage? Or is that a video cart thing?

I was playing around in ArcadeOSD and is it normal that i cant change 640x480 to center the desktop?
I can change the settings, but they have no affect...

Now it looks like i need to buy two DVD players. NTSC and PAL to tweak the TVs.
You have to do the geometry alignment for 50/60Hz separately in the service mode.
I did it with the Xbox cause i can switch there between NTSC and PAL but i don't know if i trust
the Xbox software DVD player when it comes to accuracy.

Another question i have:
I did set the overscan to 2.5% on the TV.
When i use ArcadeOSD to fit the resolutions, do i not squish or stretch the games?

IF you set monitor = custom, did you also enter some specs in the monitor_specs0 line?
Not sure what happens if you don't...

monitor_specs0    15625-15800, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448
Was already in the VMMaker.ini.

What i don't know yet is what/where/which specs i have to put in the mame.ini

[Sledge]

As Calamity said above..

in mame.ini

Code: [Select]

#
# CORE SWITCHRES OPTIONS
#
modeline_generation       1
monitor                   generic_15
change generic_15 to:

monitor                   PAL

or

monitor                   NTSC

and see how you go..
Or if you want to persist with custom, you need to put the custom line into mame.ini as well..
crt_range0                15625-15800, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 192,288, 448,576

[Calamity]

and see how you go..
Or if you want to persist with custom, you need to put the custom line into mame.ini as well..
crt_range0                15625-15800, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448

Remind VMMaker and GM still use different formats:

VMMaker:
monitor_specs0        15625-15800, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448

GroovyMAME:
crt_range0                15625-15800, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 192,288, 448,576

http://forum.arcadecontrols.com/index.php/topic,116023.0.html