INT 49 - TI Professional PCIBM PC - CRT - SCROLL UP/COPY WINDOW AH = 06h AL = source blanking 00h blank source region (move/scroll) nonzero do not blank source region (copy) DH,DL = source start column,row BH,BL = destination start column,row CH = width of region to move/copy CL = height of region to move/copy Return: nothing Notes: AH=00h,04h,05h,0Bh,0Ch,0Dh,0Fh are documented as NOPs the specified region may be wider than the screen, but reliable operation then requires that the height be exactly one row SeeAlso: AH=01h,AH=02h,AH=07h,AH=13h,AH=14h