CheckSnow (variable) (
Enables and disables "snow-checking" when storing characters directly in video memory
When a color text mode is selected, CheckSnow is set to True, and direct video-memory writes will occur only during the horizontal retrace intervals.
If your program is running on a newer CGA, you might want to set CheckSnow to False at the program's beginning and after each call to
This will disable snow-checking, resulting in significantly higher output speeds.
CheckSnow has no effect whenis False.