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Confusion on how to install Groovymame32...

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Calamity:
Hi repetto,

It's good to see it worked :)

I noticed in your log: Direct3D: Using StretchRect for prescaling
Which probably means the hardware support for prescaling is not available in d3d, probably because the 9250 old chipset (this is odd because I use these cards regularly and never had an issue, but who knows). In this situation old ddraw came to the rescue.

I have to remind updating the arcade_15_25 presets for this to work by default.

Thanks for testing!

repetto74:
Hi Calamity,

It's my pleasure, glad to give a contribution! ;D

I may have still an issue there unfortunately. I tried to launch some vertical games and I do not know why GM will launch Galaxian (which is a 256x224) in 720x768 25khz which I do not want in this case. (it should be at 15khz native resolution)
Did I miss something in the mame.ini??

Calamity:
This one was hard to figure out. The problem is, your specs only allow up to 58.484 Hz for 256 lines, this is because your upper hfreq limit for range0 is 16.2 KHz.

On the other hand your -sync_refresh_tolerance option in mame.ini is set to 2.0 Hz. As the absolute difference between 60.606 Hz and 58.484 Hz is 2.1223 Hz (higher than 2.0 Hz), the 400x256 video mode is penalized, and one with a true 60.606 Hz is picked instead.

So you have two options. Either raise the hfreqmax value a little bit, so that the resulting refresh difference is lower than 2.0 Hz:

crt_range0 15625-16300, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 256, 448, 576

or, simply raise the -sync_refresh_tolerance option to something like 2.5 or higher.

repetto74:
Hi Calamity

The second option did the trick again... ;D I had the same issue with Qbert where the variation was at 2.9Hz so I increased the tolerance to 3.0 and it did the job.
It's really frustrating for me to not understand how to play with those different settings in Groovymame. I know only some basics about monitor, it's a pity because this version of Mame is so powerfull!

Thanks a million again! I really hope there will be one day a guide or detailed tutorial for GM  :notworthy: :notworthy:

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