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Main => Raspberry Pi & Dev Board => Topic started by: aldub516 on July 03, 2017, 03:49:52 pm

Title: can i set pi/retropie to use a certain area of a monitor?
Post by: aldub516 on July 03, 2017, 03:49:52 pm

im finishing a mini bartop build.. built with all scraps or extra materials and arcade parts just for fun and to keep budget low. I want to use an old monitor i have that will fit but the monitor screen is too big for the machine. The actual monitor fits in but you cant see the whole screen so i wanted to know if i can set pi to cut out portions of the screen/display on a given part. For instance if i want to cut off 3 inchs off the top, and bottom or whatever.. aspect ratio can be wacky if need be, but yea. Just wanna figure out how to or if i can do this.

Title: Re: can i set pi/retropie to use a certain area of a monitor?
Post by: 05SRT4 on July 03, 2017, 04:41:30 pm

Just did a quick google search and found this.

http://elinux.org/RPiconfig#Video_mode_options (http://elinux.org/RPiconfig#Video_mode_options)

Now I have never done this but I am thinking it may have something to do with the Over Scan options.

Title: Re: can i set pi/retropie to use a certain area of a monitor?
Post by: mahuti on July 05, 2017, 02:41:00 pm

Yes, it's the overscan options, and yes, you can cut off a LOT using overscan. 3 inches should be doable. 

Code: [Select]

disable_overscan=0
overscan_left=24
overscan_right=24
overscan_top=24
overscan_bottom=24

Here's the official Raspberry Pi docs on video config:
https://www.raspberrypi.org/documentation/configuration/config-txt/video.md (https://www.raspberrypi.org/documentation/configuration/config-txt/video.md)

Search the page for disable_overscan and you'll see the rest of the options below.