An unusual 48G. What is it?

[rprosperi]

(03-05-2016 03:55 PM)Cristian Arezzini Wrote:  I recently acquired a very nice 48G. It looked totally ordinary, until I turned it on (it came with batteries installed): then I saw a very cool 6-level stack.
Then I checked the available RAM: I got 66,707.5 bytes free.
Then I checked the Library menu: it shows 3 ports (:0:, :2: and :3: ).
Ports 2 and 3 are empty, while port 1 has the following: 4, 257, 228, 182, 179, 178, 177, 176, 1200, 809, 808, 224, 1201, 1122, 234 and 805.
What is this calculator? It looks brand new, totally unmarked in any way, so I can't guess how it could have been opened (and closed again so perfectly).
What is the software installed in port 0? Can I find infos/manuals? And, should the batteries die... would I loose everything and get a normal, "pristine" 48G (with more RAM)?

This machine definitely has SPEEDUI installed, the port indicators in the upper right corner and LIB 4 confirm this. Use [LS] [Library] to get a VARS-like list of the installed libraries, which may reveal what they are; some Libraries include an About function to explain what they are. IIRC, the 48 FAQ (Google it; you will easily find this) lists some common Library numbers which may help.