Intrinsic-99 SetCharAttrib

99: SetCharAttrib(X, Y, C);

This intrinsic sets the screen character at the cursor position X,Y to the value specified by C. The low byte of C is interpreted as an ASCII character, and the high byte is interpreted as a standard VGA attribute that specifies the character's color and background color. (Controlling Screen Refresh can speed up this intrinsic. See the Console Refresh section for more information.)