INT 49 - TI Professional PCIBM PC - CRT - SET PROTECTED STATUS AREA AH = 15h CL = row at which to start status area, or 00h to cancel CH = 00h Return: nothing Desc: set a protected area of the screen which will not be affected by TTY writes or the scrolls they may generate Notes: AH=00h,04h,05h,0Bh,0Ch,0Dh,0Fh are documented as NOPs the current cursor position must be above the status area in order to set the protected area SeeAlso: AH=01h,AH=02h