I'm trying to get the size of the screen from the INFDS for the display file. According to the IBM manual it should be available in the INFDS positions 67-70 after a POST. After working on this for a couple of hours and searching the internet for another hour or two I'm at a loss. I can get other information from the INFDS but the screen size is always zero. I'm trying to determine if a program is running on a normal screen or a handheld scanner with a smaller screen.