Question about Infocom Interpreter Versions

[jruschme@csc.com (John Ruschmeyer)]

In reading the specs for the Z-Machine, I notice that the following
12 codes are used to denote various interpreter flavors:

	1    | DECSystem-20 (Infocom's own mainframe)
	2    | Apple ][e
	3    | Macintosh
	4    | Amiga
	5    | Atari ST
	6    | IBM PC
	7    | Commodore 128
	8    | Commodore 64
	9    | Apple ][c
	10   | Apple ][gs
	11   | Tandy Color
	
This leaves me with a few questions, though which I'm hoping someone can
clarify.

1) How did they designate the "other" platforms which they supported?
   (e.g., CP/M, PDP-11, TRS-80 Model 1/3)

2) Can I assume that the differences on the various CP/M flavors was
   mostly one of disk format? Did they also tune the interpreter to
   the platform? (i.e., Did the Osborne-1 version only use 52 columns?)

3) What *is* the difference between the Apple //e and //c versions?

Thanks in advance... <<<John>>>

P.S. If the O-1 version really only was 52 columns, does anybody have
a spare interpreter they could send my way?  (I have all the games courtesy
of LTOI 1 and 2, just would like to find an interpreter.) Thanks.

-- 
John Ruschmeyer			jruschme@csc.com
Computer Sciences Corp.
Eatontown, NJ 07724		908-542-8383