Software Support > GroovyMAME
15khz from boot w/ new card
steveggz:
I was using the ArcadeVGA card with my makvision 27" arcade monitor (tri-sync) and groovymame but when I found out that I could get more modlines by using a regular ATI card and Calamity's drivers I bought a sapphire radeon HD4850.
I need some help setting up a couple of things.
After installing the ATI drivers I then installed Calamity's drivers and overwrote any files it asked me to. But after hooking the arcade monitor and starting my computer the monitor started having problems while windows was booting. The monitors picture was messed up and then it started clicking very fast over and over like it was not compatible with the frequency. So I pulled the monitors plug out. I tried several reboots with the same result.
I know the ArcadeVGA card has 15khz from start and Im guessing the problem is this card not doing so and my monitor freaking out. Is there any way to get 15khz with the radeon HD4850 from boot?
Just want to add that my arcade monitor is a tri sync monitor so shouldn't it be able to handle the boot screen? The monitor does ega cga & vga.
Calamity:
--- Quote ---I know the ArcadeVGA card has 15khz from start and Im guessing the problem is this card not doing so and my monitor freaking out. Is there any way to get 15khz with the radeon HD4850 from boot?
--- End quote ---
There was a tool named boot-15khz that gets installed into the MBR so it works right from startup. However I highly doubt it will work with modern ATIs, and there's also the risk to mess your HD install by touching the MBR.
--- Quote ---Just want to add that my arcade monitor is a tri sync monitor so shouldn't it be able to handle the boot screen? The monitor does ega cga & vga.
--- End quote ---
Well it should be able to handle it if that boot screen was actually 31 kHz, but someone had the great idea of using odd frequencies for boot screens in modern cards bioses, I'm not sure if they're 70 Hz vertical or whatever but they don't seem to be near 31 kHz, so even the J-PAC can't provide an usable split screen output for these newer cards.
steveggz:
Thanks for the reply.
--- Quote ---so even the J-PAC can't provide an usable split screen output for these newer cards
--- End quote ---
Thanks for clearing that up, that was my next question.
What do you recommend I do? Should I have a seperate switch for the monitor and turn it on after windows has loaded?
abispac:
On my expirience, you shouldnt bother, i have not seen a single monitor that brakes because of that...
Calamity:
--- Quote from: abispac on April 21, 2012, 12:54:50 pm ---On my expirience, you shouldnt bother, i have not seen a single monitor that brakes because of that...
--- End quote ---
Multisync monitors do break. At least one user's multisync monitor that I know of did break while tweaking stuff with Arcade_OSD so I do take this very seriously. Whether wrong frequencies were the issue here or it was a different fault is something we're not sure of, but anyway: caution.
--- Quote ---What do you recommend I do? Should I have a seperate switch for the monitor and turn it on after windows has loaded?
--- End quote ---
Yes, that's a possibility. An interesting test is to plug a PC monitor during boot and check its OSD to see which frequencies are actually being outputted.
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