Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!apple!voder!pyramid!prls!philabs!jyc
From: jyc@philabs.philips.com (Jonathan Yang Chen)
Newsgroups: comp.lsi
Subject: Re: EDIF
Message-ID: <54260@philabs.Philips.Com>
Date: 1 Jun 89 15:56:41 GMT
Sender: news@philabs.Philips.Com
Distribution: usa
Organization: Philips Laboratories, Briarcliff Manor, NY
Lines: 160

In article <1412@ncr-sd.SanDiego.NCR.COM> mildredm@babel.SanDiego.NCR.COM (Mildred Magboo) writes:
>I am currently working on a translator that will 
>convert a netlist file into an EDIF format.  I
>need to know if there is anybody out there who
>can provide me assistance in the conversion
>process.  

>The only reference material I have is the EDIF 2 0 0
>Standard reference book.  Please send me e-mail if you
>know anything about EDIF, particularly 'netlist'
>view.  


Mike Waters and other people already mentioned the resources and
references for EDIF work.  I just want to list an example of EDIF 2 0 0
netlist that may be of help.  During the course of my work, I need
translators between EDIF and the GDT's L database (GDT is a trademark
of Silicon Compiler Systems (SCS) Corp. in New Jersey).  Since SCS does
not provide the translators, I started to write my own.  Is anyone
doing similar work?  Maybe we can exchange informations.

The following is an EDIF netlist of an CMOS opamp.  We have a copy of
University of Manchester's EDIF syntax checker;  I used it for the
syntax checking of this netlist.  However, I cannot guarantee that the
netlist is correct since I just started working on EDIF and no other
people within Philips Laboratories are experienced and/or actively
working on EDIF interface.  If anyone find any errors or want to make a
suggestion, please send me an Email.

------------------------------------------------------------------------
(EDIF (Rename design "opamp.e")
  (EdifVersion 2 0 0)
  (EdifLevel 0)
  (KeywordMap (KeywordLevel 0))
  (Status (Written
    (TimeStamp   1989 5 24 15 35 0)
    (Program "LtoEDIF" (Version "V200"))
    (Author "Jonathan Y. Chen")))
  (Design opamp (CellRef opamp (LibraryRef L_1)))
  (Library (Rename L_0 "/gdt/bin/Led")
    (EDIFLevel 0)
    (Technology 
      (NumberDefinition (Scale 1 (E 1 3)(Unit Resistance))
                        (Scale 1 (E 1 -12)(Unit Capacitance))))
    (Comment "The following cells are devices")
    (Cell TN 
      (CellType GENERIC)
      (View V 
        (ViewType NETLIST)
        (Interface 
          (Port d)
          (Port s)
          (Port gr)))
      (Property SPICEPAR (String "W=4 L=3"))
    )
    (Cell TP 
      (CellType GENERIC)
      (View V 
        (ViewType NETLIST)
        (Interface 
          (Port d)
          (Port s)
          (Port gr)))
      (Property SPICEPAR (String "W=4 L=3"))
    ) 
    (Cell capacitor 
      (CellType GENERIC)
      (View V 
        (ViewType NETLIST)
        (Interface 
          (Port d (Direction INOUT))
          (Port s (Direction INOUT))))
      (Property SPICEPAR (String "5 pF"))
    ) 
    (Cell resistor 
      (CellType GENERIC)
      (View V 
        (ViewType NETLIST)
        (Interface 
          (Port d (Direction INOUT))
          (Port s (Direction INOUT))))
      (Property SPICEPAR (String "7 K"))
    ) 
  )
  (Library (Rename L_1 "/user/jyc/Ledif/test")
    (EDIFLevel 0)
    (Technology 
      (NumberDefinition (Scale 1 (E 1 3)(Unit Resistance))
                        (Scale 1 (E 1 -12)(Unit Capacitance))))
    (Comment "This is the netlist of an opamp")
    (Cell opamp
      (CellType GENERIC)
      (View V 
        (ViewType NETLIST)
        (Interface 
          (Port p0 (Designator "VDD"))
          (Port p1 (Designator "VDD"))
          (Joined (PortRef p0) (PortRef p1))
          (Port p2 (Designator "GND"))
          (Port p3 (Designator "GND"))
          (Port p4 (Designator "GND"))
          (Joined (PortRef p2) (PortRef p3) (PortRef p4))
          (Port p5 (Direction OUTPUT) (Designator "OUT"))
          (Port p6 (Direction INPUT) (Designator "IN"))
          (Port p7 (Direction INPUT) (Designator "IN"))
          (Port p8 (Direction INPUT) (Designator "IN"))
        )
        (Contents 
          (Instance t0 (ViewRef V (CellRef TP (LibraryRef L_0)))
            (Property SPICEPAR (String "W=60 L=8")))
          (Instance t1 (ViewRef V (CellRef TP (LibraryRef L_0)))
            (Property SPICEPAR (String "W=150 L=5")))
          (Instance t2 (ViewRef V (CellRef TP (LibraryRef L_0)))
            (Property SPICEPAR (String "W=150 L=5")))
          (Instance t3 (ViewRef V (CellRef TN (LibraryRef L_0)))
            (Property SPICEPAR (String "W=45 L=10")))
          (Instance t4 (ViewRef V (CellRef TN (LibraryRef L_0)))
            (Property SPICEPAR (String "W=45 L=10")))
          (Instance t5 (ViewRef V (CellRef TP (LibraryRef L_0)))
            (Property SPICEPAR (String "W=120 L=8")))
          (Instance t6 (ViewRef V (CellRef TN (LibraryRef L_0)))
            (Property SPICEPAR (String "W=90 L=10")))
          (Instance i0 (ViewRef V (CellRef resistor (LibraryRef L_0))))
          (Instance i1 (ViewRef V (CellRef capacitor (LibraryRef L_0))))
          (Net N_0 (Joined
            (PortRef d (InstanceRef t1))
            (PortRef s (InstanceRef t0))))
          (Net N_1 (Joined
            (PortRef p0)
            (PortRef p1)))
          (Net N_2 (Joined
            (PortRef d (InstanceRef t0))
            (PortRef p0)))
          (Net N_3 (Joined
            (PortRef d (InstanceRef t2))
            (PortRef s (InstanceRef t0))))
          (Net N_4 (Joined
            (PortRef s (InstanceRef t1))
            (PortRef d (InstanceRef t3))))

	...... /* nets omitted to reduce the message length */

          (Net N_20 (Joined
            (PortRef d (InstanceRef i0))
            (PortRef s (InstanceRef i1))))
          (Net N_21 (Joined
            (PortRef d (InstanceRef i1))
            (PortRef d (InstanceRef t6))))
        )
      )
    )
  )
)
------------------------------------------------------------------------

Jonathan Y. Chen
Philips Laboratories			Phone:	(914) 945-6299
North American Philips Corporation	Email:	jyc@philabs.philips.com
345 Scarborough Road			Fax:	(914) 945-6375
Briarcliff Manor, NY 10510		Telex:	646326 philab bfrf