Embarrassing schoolboy Mame question... 🫢

[stigzler]

I first started tinkering with Mame 20 years ago. Can't believe I'm stuck on this. Also, either google's punishing me for adblocking youtube, or my google-fu is presently offline. Even AI seems to have taken its ball home. 

How on earth do I force all vertical games into 7:8 rather than 3:4 resolution without changing each and ever game individually?

For bonus points, how do I do similar for horizontal games (using 12:7 instead of 4:3)?

My addled aged brain thinks it involves creating horizontal and vertical.ini in the ini folder, but as stated, goggle's causing more confusion than clarity. Wish they hadn't removed "Don't be evil" from their wall....

[launchretrogirl2562]

Edit your mame.ini file and set:

keepaspect 1

unevenstretch 1

aspect 7:8

 

Or if you want this only for vertical games, create a vertical.ini file in your MAME ini folder with those settings. MAME will automatically apply it to all vertical games.

 

For horizontal games in MAME, you can create a horizont.ini file (note: MAME uses "horizont" not "horizontal") in your MAME ini folder with these settings:

keepaspect 1

unevenstretch 1

aspect 12:7

 

Or test it with this command

mame gamename -aspect 12:7 -unevenstretch