Quick tool to analyse the input lag of a TV / Monitor from a real Atari ST or FPGA.
A zip containing the Atari ST disk image (.ST file format) can be dowloaded from the releases section. Mount this disk image with your MiSTer FPGA or create a real floppy from it and load into your Atari ST (pure old school way!).
Please take a look at the screen capture below which includes a short documentation:
Note: on a MiSTer FPGA, the diode that will blink is the orange one (User LED).
~blastsnes