RetroCRT :: Utility suite to configure RetroPie for a CRT
Copyright (C) 2021 Duncan Brown (https://github.com/xovox)
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.
I haven't needed to update RetroCRT for a while, everything works as I'd expect it to. There are features I'd like to add, but over all it's fairly mature.
RetroCRT is a suite of tools designed to make RetroPie gaming on 15khz CRTs easy and user friendly. This only covers video output, JAMMA controls will be a separate project to increase maintainability.
The biggest advantage RetroCRT has over other RetroPie 15khz CRT toolsets/distributions is we're only updating configuration files line-by-line, so updating RetroPie should never be an issue. This means that RetroCRT should be able to coexist with RetroPie and probably almost everything else you're running.
RetroCRT only supports Libretro cores, with a few exceptions. If you find a Libretro core that's not properly configured when you launch it, please see the issues page and file a new issue if you don't see your platform already requested
See the manual.
See the issues page to see planned supported hardware
Raspberry Pi
JAMMA Arcade: pi2jamma
RGB: pi2scart
RGB/VGA: GERT VGA 666
Before doing anything else, update RetroCRT! You can do this in the RetroPie screen in EmulationStation.
If that doesn't fix it, see the troubleshooting doc.
This is a hobby project, so I've made moves to make everything as simple & maintainable as possible.
The platforms I've been using this on are calibrated exclusively for 320x240 & 1920x240, and that's how RetroCRT behaves.
You will see black borders around games that are < 240p, this is by design, I calculate aspect ratios based on vertical resolution.
For example, 224p is calculated as follows (1920 / 4
To keep my hobby project maintainable, RetroCRT will use only 2 resolutions while you use it: 320x240 for console & EmulationStation as well as game play running 1920x240. This means that any game that runs < 240 will have black borders. I calculate correct aspect ratios for all games based on vertical resolution by calculating vertical percentage times max horizontal output, like (224 / 240) * 1920 = 1785.60 which is rounded up to the nearest even #. Hardware output resolution of 224p for uncalibrated sets is eventually coming, but I don't have alot of time to maintain this project.
Most of this media is outdated as it's based on my previous theme
Splash music is Master Boot Record's After Burner
I am not affiliated with RetroPie, Mike Chi, RetroTink, pi2jamma, or anyone else. I'm doing this as a personal project.
Shout out to Vykran for the initial groundwork, though he seems to be PAL & I'm NTSC... which brought us to where we are now.
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