🚀 go-pugleaf

While 5MB is pretty small for a pro 350 disk, it can be used.
What you need is a password diskette. This can be made on another
pro from the menus. You then boot and insert the password diskette,
then use that diskette's password to log in. Then you can reset
the password to something you know, or nothing if you prefer not to
have a password on the machine (a good idea IMHO). Then if you
have POS V2 or later, and have the native toolkit, you've got an os.
DEC has released POS and the toolkit and a bunch of other applications
to DECUS. This covers all versions of POS (some of us asked the DECies
whether the release covered only POS 3.2 or earlier ones. It covers
'em all.) 
   You can obtain quite a lot of free software from the DECUS library
for these beasties; some on diskette, more on tape based collections
that assume you have a friend with a VAX handy. (It's a lot easier to
send out 100 MB on a tape than on hundreds of diskettes! The collections
run to this size, each.)
   DEC has released POS, a windowing system, BASIC, the toolkit (includes
assembler, linker, editors, utilities...), pro-sight, pro communications
(terminal emulator), pro DECnet, and some others. Also available are
free comm programs with more general protocols (kermit etc.), databases,
spreadsheets, a C compiler, a Pascal compiler, Forth, disassemblers,
focal, tar diskette read/write, TECO editor, graphics packages,
calendar packages, calculators, another Basic, LOTS of tools of all sorts,
shells, and so on. The variety and power of free software on the pdp11
platform is great, and does not require venix. POS is reasonably well
adapted to the pro 350 hardware and while it has its clunky side (due
to the fact that it was crippled from RSX and only un-crippled late
in its life cycle and still with some bandages), it is useful. The
DEC OS gives a good match to the graphics in the box and since the
software is free (or may cost a copying fee; depends where you get it)
you should investigate this. However you should find someone physically
close to you if possible to deal with. 
Glenn Everhart
Everhart@Arisia.dnet.ge.com
RSX SIG tape librarian