btw to get out of it output 1Ah to port 10h after outputing 1F or 1C: mode, 1, alpha, a(math) if calcsys is second on the apps menu: on, apps, 2, 3, 1, <left arrow>, left, left, up, mode, 1, alpha, a(math) James Lancaster and in calcsys to output the key is mode (eg to repeat, hit mode then 1 (c or f) in sequence to 'advance' the line.