4:3 Aspect ratio \ VOGONS

4:3 Aspect ratio

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First post, by dosfriend

Posted on 2016-02-26, 17:53

dosfriend Offline

Rank Newbie

Rank: Newbie
Posts: 51
Joined: 2014-09-30, 17:21

Hi all 😀

I'm having issues using Dosbox on my new WinXP machine, which is a Core2Duo with a GTX285.
It's attached to a 4:3 CRT monitor, but DOS prompt won't fill the screen vertically at full screen mode.

Already tried to set aspect=true and fullresolution=640x480 or original. Renderer is OpenGL.
I think Dosbox is using 640x400 and that's why I see black borders on top and bottom of the screen. Maybe this mode isn't compatible with the Nvidia card. I can't see any scaling options on Nvidia preferences.

Is there any way to run DOS prompt at full screen with my setup?

Reply 1 of 3, by leileilol

Posted on 2016-02-27, 00:22

leileilol Offline

Rank l33t++

Rank: l33t++
Posts: 11770
Joined: 2006-12-16, 18:03

Maybe it'll switch to your usual text-mode aspect if you switch machine to vgaonly. It should then make a 720x400 resolution

long live PCem

Reply 2 of 3, by dosfriend

Posted on 2016-02-27, 10:31

dosfriend Offline

Rank Newbie

Rank: Newbie
Posts: 51
Joined: 2014-09-30, 17:21

Thanks for the feedback! 😀

Tried to set it to vgaonly, but I think 720x400 isn't a 4:3 resolution, the black bars are still there.

Reply 3 of 3, by Azarien

Posted on 2016-02-27, 17:27

Azarien Offline

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Rank: Oldbie
Posts: 877
Joined: 2015-05-14, 07:14

720x400 is technically 9:5 (or 18:10), but this *is* standard VGA text mode resolution.

When displayed on 4:3 monitor you got non-square pixels. This was normal.

Have you tried different renderers?
DOSBox is not really sane in its aspect ratio and scaling support.

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