The official CP/M edition of the Z-Machine interpreter supports games
compatible with ZM v3. The interpreter was released in 3 different
versions, and all of the uses the same format for the patching-field.
This patch-field for the CP/M-80 interpreter is the very first 256 bytes
of the program file.

The interpreter executable can be patched to run any v3 compatible
Z-Machine game. To change the game, just point it to a different datafile.
Be aware that the datafile may have to be padded with zeroes, as its size
must be a multiple of 1024 bytes (the game loads its data in 1k chunks).


Offset	Bytes		Content
-----------------------------------------------------------------------------------
00h	3		C3 00 02 ("JP 200h")
03h	1		Characters/line (132 maximum)
04h	1		Lines/screen (NOT including status line)
05h	8		Filename to data/save-file ("ZORK1   " = ZORK1.DAT/ZORK1.SAV). Use spaces as padding.
0Dh	1		1 if LF should print after CR on screen
0Eh	1		1 if LF should print after CR on printer
0Fh	1		Number to add to ASCII value for inverted/highlighted characters


			Initialization
10h	1		Length of String
11h	32		String:	* Move cursor to the lower left corner
				* If supported: setup scrolling-region to not scroll the status-line.
				* Clear the screen


			Reset (at end of game)
31h	1		Length of String
32h	32		String:	* If used: Reset scrolling-region to include entire screen
				* DON'T clear the screen


			Begin status-line
52h	1		Length of String
53h	32		String:	* Move cursor to the upper left corner (status-line area)
				* If supprted: activate inverted video


			End status-line
73h	1		Length of String
74h	32		String:	* Move cursor to the lower left corner (game-text area)
				* If used: Clear inverted video


			Printer Initialization
94h	1		Length of String
95h	32		String:	* Prepare printer to print raw ASCII


B5h	75		Filler bytes, ignored