I'm using DOSbox to play really old games I had on my PC XT with a green monochrome monitor. D-Fend Reloaded is set to run these games on CGA mode, it has colors, is there a way to make it more similar to the experience of a green-on-black monochrome screen of an old computer?
The short answer is to set the emulated graphics card to Hercules, and in-game use F11 to toggle between the color schemes.
If you're using DOSBox, you'd want to change the machine entry in your dosbox.conf file.
For D-Fend Reloaded, you'll want to:
You can then launch the game and enjoy the monochrome graphics.
NOTE: In order for it to work, the game needs to provide support for Hercules video cards.