Re: Marlin 1.1.9 Full Reprap Graphic not showing correctly

I found this but no explanation!

#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER

#ifndef ST7920_DELAY_1
#define ST7920_DELAY_1 DELAY_NS(125)
#endif

#ifndef ST7920_DELAY_2
#define ST7920_DELAY_2 DELAY_NS(125)
#endif

#ifndef ST7920_DELAY_3
#define ST7920_DELAY_3 DELAY_NS(125)
#endif

Could someone point me to where so I can learn about it.

Thank You.

OK! DELAY_NS() does not measure in NOPs (as done previously). Delays are in nanoseconds.