Most common problem: scrolling image on pc to arcade monitor

[veggav]

Hey all,

I already have an mame cabinet with an LCD monitor but I wanted to get closer to the original as possible so a friend gave me an arcade monitor that he said was being used in a neo geo cabinet.

I've put my desktop in 640x480@60hz (32bit color) installed soft15khz and got the image you can see here in this picture:



The colors seems fantastic and the soldering I did myself. I got a vga cable, cut in the middle and soldered like this:

Red - Red
Green - Green
Blue - Blue
Red, Green, Blue protection (terra) and black to "terra"/protection
Vertical and horizontal sync soldered together to "sync" (white in the arcade monitor)

I'm not the best solder so here's the result:



This is my arcade monitor:




Let me know what I can do to solve this )

[BobA]

An arcade monitor is 320×200 resolution so you have to reduce your resolution is soft 15 to match a cga or 320×200 resolution screen.

[MonMotha]

You can run 640x480 on a CGA arcade monitor, but it has to be Interlaced, which soft15k is supposed to do.  It's not work, though, which is at least one of your problems.

You're essentially getting 3 images, which would be more typical of trying to run 800x600 on a 15k monitor (note that this can damage it).

[veggav]

This image was made while running hyperspin.

Mame games do the same. So what can I do?  Should I change soft15khz to powerstrip?
Should I change hyperspin settings?
640x480 in 15khz works?

[veggav]

I saw somewhere that my graphic card is not compatible.
I have a geforce 220 GT with the newest drivers.

[SailorSat]

Most likely you need the EDID dongle for a GT220 to work.