how to include field separator if there are blank fields? Post: 77690

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net

NET(5)								File Formats Manual							    NET(5)

NAME

       net - format of .net files read/written by Magic's netlist editor

DESCRIPTION

       Netlist	files  are  read  and  written	by  Magic's  netlist editor in a very simple ASCII format.  The first line contains the characters
       ``  Netlist File'' (the leading blank is important).  After that comes a blank line and then the descriptions of one or	more  nets.   Each
       net  contains one or more lines, where each line contains a single terminal name.  The nets are separated by blank lines.  Any line that is
       blank or whose first character is blank is considered to be a separator line and the rest of its contents are ignored.

       Each terminal name is a path, much like a file path name in Unix.  It consists of one or more fields separated by slashes.  The last  field
       in the path is the name of a label in a cell.  The other fields (if any), are cell instance identifiers that form a path from the edit cell
       down to the label.  The first instance identifier must name a subcell of the edit cell, the second must be a subcell of the first,  and	so
       on.

       Instance  identifiers  are  unique  within their parent cells, so a terminal path selects a unique cell to contain the label.  However, the
       same label may appear multiple times within its cell.  When this occurs, Magic assumes that  the  identical  labels  identify  electrically
       equivalent  terminals;  it will choose the closest of them when routing to that terminal.  Further, after connecting to one of these termi-
       nals Magic may take advantage of the internal wiring connecting them together and route through a cell to complete the net's wiring.

       An example netlist file follows below.  It contains three distinct nets.

       ----------------------------------------
	       Netlist File

	      alu/bit_1/cout
	      alu/bit_2/cin

	      regcell[21,2]/output
	      latch[2]/input
	       This line starts with a blank, so it's a separator.
	      opcode_pla/out6
	      shifter/drivers/shift2
       ----------------------------------------

SEE ALSO

       magic(1)

4th Berkeley Distribution														    NET(5)