> Does it really matter? > While on the topic of ROMs, I noticed that my teacher's 86 (viewscreen model > with ROM version 1.4) graphs all functions at the same time. > My 86 with ROM version 1.6 graphs them one at a time (y1 is displayed,then > y2,etc) > Is it the ROM or something to do with the viewscreen? It is an option. You can turn it on or off, however you like.