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Author Topic: GroovyArcade and HD 6xxx compatibility  (Read 1033 times)

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Tusten

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GroovyArcade and HD 6xxx compatibility
« on: May 03, 2013, 05:54:49 pm »
Hi

I am currently testing compatibility for my new setup: GroovyArcade, HD 6850 video card and H9110 monitor. Because I am completely new to Linux, I need some advice on how to proceed testing my setup:

So far I am running GroovyArcade from an USB install. My computer boots to 15 kHZ just fine after disabling splash screen. Most MAME games runs at 100% (checking with “F11”).

However I experience some issues with R-type and similar resolution games. They will not sync correctly, resulting in a very shaky picture. I have earlier been running R-type from a XP install and HD 4xxx video card with no problems.

Furthermore I have a problem starting games with “groovymame romname -v -md 4 >romname.txt” parameters, as –md4/-md 4 is not recognized as a parameter. I have attached an image of the screen running R-type with only –v.

Is this likely a video card problem?
What is the best procedure to test a video card?

Calamity

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Re: GroovyArcade and HD 6xxx compatibility
« Reply #1 on: May 03, 2013, 06:28:42 pm »
Hi Tusten,

I tested one HD 6450 and had no issues. That looks like a problem with unstable dotclocks. Try editing the dotclock_min value in mame.ini, set it to "8.0" MHz (dotclock_min     8.0).

The -md 4 param is no longer in use, just add the -v param to get logs: groovymame romname -v >romname.txt


Important note: posts reporting GM issues without a log will be IGNORED.
Steps to create a log:
 - From command line, run: groovymame.exe -v romname >romname.txt
 - Attach resulting romname.txt file to your post, instead or pasting it.

CRT Emudriver, VMMaker & Arcade OSD downloads, documentation and discussion:  Eiusdemmodi

Tusten

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Re: GroovyArcade and HD 6xxx compatibility
« Reply #2 on: May 04, 2013, 04:32:10 am »
Thanks Calamity

Your solution works! Changing dotclock_min to 8.0 solves the problem. R-type and similar resolution games now runs just fine.

Are there any benefits in trying to lower the dotclock_min further to find the lowest stable dotclock?

Calamity

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Re: GroovyArcade and HD 6xxx compatibility
« Reply #3 on: May 05, 2013, 11:34:39 am »
Hi Tusten,

It's good that it worked. There're no real benefits it using the lower dotclocks (i.e. native horizontal resolutions) in GroovyMAME. Indeed, setting GM with a dotclock_min value often leads to better horizontal centering.
Important note: posts reporting GM issues without a log will be IGNORED.
Steps to create a log:
 - From command line, run: groovymame.exe -v romname >romname.txt
 - Attach resulting romname.txt file to your post, instead or pasting it.

CRT Emudriver, VMMaker & Arcade OSD downloads, documentation and discussion:  Eiusdemmodi