| OSContrastUp | Function (ROM Call 0x296*)

system.h

void OSContrastUp (void);

Increases the contrast.

OSContrastUp increases the display contrast. It is actually a library function calling the real TIOS function called OSContrastUp, because the TIOS function destroys the content of a register which needs to be preserved.

Uses: AB_getGateArrayVersion

See also: OSContrastDn, OSContrastAddress, OSContrastValue