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New to GroovyMAME : 640x288 ?

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Pixeljunkie:
Hi everybody :)

I have always used an ArcadeVGA5000 in combination with Windows 7 for my cab.
Just recently I acquired a brand new, faster pc that doesn’t play well with the card. Using my ArcadeVGA in the new pc with Windows 10, the card won’t output 15Khz during BIOS screen & boot, whereas it does perfectly in my old pc. It does output 15Khz in Windows though. Changing to Windows 7 doesn’t help, looks like the BIOS of the new pc doesn’t like the card.

On my CRT scart TV, with the old pc, I always used a fixed resolution of 640x288 for both the desktop, frontend and games running in MAME. Worked like a charm. When I try to use that resolution in Windows 10 on the new pc, all games look super skinny, please check attached image. No amount of adjusting helps, width size is already maxed out.

Out of frustration and despair, and after finding out about groovyMAME, I bought a card from arcade express that has already been patched with the Atom BIOS and i’m going to install it this evening using some of the tutorials. But I can’t seem to find how to run my desktop & all games in groovyMAME in the fixed resolution of 640x288. I have read so many posts but I really can’t find it.

Can someone please help me ? Would be very much appreciated :)

Substring:
Azerty keyboard   :cheers:
But I'm of no other help excect suggesting "oh give up windows, and join the dark side of the force on GroovyArcade" :D

Pixeljunkie:

--- Quote from: Substring on March 13, 2023, 01:55:20 pm ---Azerty keyboard   :cheers:
But I'm of no other help excect suggesting "oh give up windows, and join the dark side of the force on GroovyArcade" :D

--- End quote ---


I don’t have a clue on how to get my ipac & general hardware drivers working under linux  ;D

Calamity:
Pixeljunkie,

If you set your desktop at 640x288, MAME will wrongly assume your monitor's aspect ratio is 2.22, that's the reason for the incorrect stretching. In order to fix this, edit mame.ini and set aspect 4:3 (it's "auto" by default).

With regards to running everything at 640x288 well... please don't do that, you deserve better. Follow GM/CRT Emudriver tutorials. Or simply burn GA in a pendrive and try.

Pixeljunkie:

--- Quote from: Calamity on March 14, 2023, 06:03:29 am ---Pixeljunkie,

If you set your desktop at 640x288, MAME will wrongly assume your monitor's aspect ratio is 2.22, that's the reason for the incorrect stretching. In order to fix this, edit mame.ini and set aspect 4:3 (it's "auto" by default).

With regards to running everything at 640x288 well... please don't do that, you deserve better. Follow GM/CRT Emudriver tutorials. Or simply burn GA in a pendrive and try.

--- End quote ---

Thank you for the help  :)
I will try my best following the tutorials. The reason for running my desktop in 640x288 is because 640x480 interlaced looks terrible on my crt

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