This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
According to The Dostalk Scrapbook, there are 3 official (as in Apple made 'em, I think) versions of DOS 3.3. PEEK (46725) supposedly tells you which is running: 165: oldest (1980) 186: better (January 1, 1983) 182: latest (?) I remember one had something to do with the way text files are handled. --------------------- By: Dave Althoff The second version would be the IIe release ("DOS 3.3e") which contains yet another APPEND patch, and an additional bit of code which shuts off the 80- column firmware during boot. That version comes on a new System Master which uses the LOADER.OBJ0 program to fast-load INTBASIC (or FPBASIC), and a revised "HELLO" program which displays the "BE SURE CAPS LOCK IS DOWN" reminder on a IIe. --------------------- By: Rubywand and Olcott One big problem with DOS 3.3e (and, probably, any later versions) is that it uses some memory in the DOS area which the 1980 release leaves alone. This means it can not be safely patched with Beagle's "Prontodos" speed-up mods. With DOS 3.3e, you get an APPEND patch (which turns out to introduce a new APPEND bug), a IIe display frill, and a DOS which is much slower than the 1980 DOS 3.3 patched for Prontodos. _____________________ By: David Empson