	OrTie - Page tie generator for OrCAD (tm) SDT
	Version 1.2
	Copyright (C) 1992 by Pascal Dornier

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	OrTie generates page ties (intersheet references) on flat (not
	hierarchical) OrCAD schematics. Page ties make schematics more
	readable, and are helpful in debugging and service.
	
	INSTALLATION
	
	Copy ORTIE.EXE to your OrCAD program directory (usually
	C:\ORCADEXE).
	
	CREATE PAGE TIES
	
	If you use SDT/386+, see below !!!
	
	The use of OrTie is very simple. To run:

	- Exit from OrCAD.
	- Change to the schematics directory.
	- Make a backup of your schematic files.
	- Enter:
	
	  ortie <schema.sch>		(name of your first schematic page)
	
	The program will complete in a few seconds (most of it is disk
	access). There are three phases:
	
	- Scan  : Scan schematic for module ports, copy schematic to .TIE
		  temporary files (old page ties are deleted).
	- Write : Add page ties to the .TIE temporary files.
	- Rename: When successful, save the original schematics as .BAK,
		  and rename the temporary files to your original file names.
		
	USE WITH OrCAD SDT/386+
	
	In their infinite wisdom, OrCAD decided to change the file format
	for the 32 bit version, even though limitations were mainly due to
	the netlist process, not the schematic file format. OrTie does
	not support the new file format, but with a simple batch file you
	can solve this problem. It takes just a few seconds more. Edit
	yourname to the name of your design.
	
	del *.tie
	md ortie
	32to16 yourname.sch ortie\ortie.sch
	ren *.sch *.tie
	cd ortie
	ortie
	cd ..
	16to32 ortie\ortie.sch yourname.sch
	
	OrCAD ESP INTEGRATION
	
	If you use OrCAD 4.x, OrTie can be integrated into the shell as a
	user button. Select the button you want to use, then MODIFY. Enter
	ORTIE as the first line (button name), and as command line. When
	you run OrTie this way, the name of the first sheet must be the
	same as the design name (OrCAD default).

	PLACEMENT OF PAGE TIES			(also see SAMPLE.SCH)
	
	The page tie is always placed on the unconnected end of the module
	port. To ensure that all page ties are visible, it is important to
	place module ports with enough clearance on the left or right side.
	
	Page ties are stored as TEXT, with an Escape (ASCII 27) at the end.
	Don't edit them, or they won't be deleted on the next use of OrTie.
	
	DELETE PAGE TIES
	
	To delete all page ties, enter:
	
	  ortie <schema.sch> /d
	
	LIMITATIONS
	
	OrTie is designed to read OrCAD SDT version 3.1 and 4.x schematic
	files. Hierarchical files are NOT supported.
	
	
	
	When using version 3.x, you will have to add a |LINK statement on the
	first page of the schematic to tell OrTie which files to look at:
	
	  |LINK			(these lines are entered using PLACE TEXT)
	  | SH2.SCH
	  | SH3.SCH
	  etc.
	
	If the page tie process fails for some reason, files with the
	extension .TIE will be left behind.
	
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	Revision history:
	
	1.2	970726	Added documentation for use with SDT/386+. Program
			not changed !
	
	1.1	930524	Fixed /d option. Module ports not case-sensitive
			any more. Support [31:0] notation.
