Screenshot Feature - MiSTer-devel/Wiki_MiSTer GitHub Wiki
MiSTer has the ability to capture screenshots of a running core. This is useful for many things, including "saving" passwords.
Press Win + Print Screen (⌘ + F13) to capture a screenshot from the scaled video output. In order to instead grab a screenshot at the core's native video resolution, press Win + Left Shift + Print Screen.
Output files are stored in /media/fat/screenshots/