# Created by Octave 3.6.1, Sun Mar 25 17:34:24 2012 UTC <root@t61>
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prs_iff


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 -- Function File: OUTSTRUCT = prs_iff(NAME)
     Parse a netlist in IFF format and produce the system description
     structure OUTSTRUCT.

     NAME is the basename of the CIR and NMS files to be parsed.

     See the `IFF file format specifications' (distributed together
     with the OCS package) for more details on the file format.

     OUTSTRUCT has the following fields:

          outstruct =
          {
           LCR:  struct      % the fields of LCR are shown below
           NLC:  struct      % NLC has the same fields as LCR
           namesn: matrix    % numbers of vars named in .nms file
           namess: cell      % the names corresponding to the vars above
           totextvar: scalar % the total number of external variables
           totintvar: scalar % the total number of internal variables
          }

          outstruct.LCR =
          outstruct.NLC =
          {
           struct array containing the fields: % array has one element per block

             func     % name of the sbn file corresponding to each block
             section  % string parameter to be passed to the sbn files
             nextvar  % number of external variables for each element of the block
             vnmatrix % numbers of the external variables of each element
             nintvar  % number of internal variables for each element of the block
             osintvar % number of the first internal variable
             npar     % number of parameters
             nparnames% number of parameter names
             nrows    % number of rows in the block
             parnames % list of parameter names
             pvmatrix % list of parameter values for each element

          }

     See the `IFF file format specifications' for details about the
     output structures.

     See also: prs_spice





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Parse a netlist in IFF format and produce the system description
structure OUTST



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prs_spice


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 -- Function File: [STUCT] = prs_spice (FILENAME)
     Circuit file parser that can interpret a subset of the spice file
     format.

     `prs_spice' currently supports the following set of "Element Cards"
        - Capacitors:
               Cname n+ n- cvalue

        - Diodes:
               Cname anode knode modelname <parameters>

        - MOS:
               Mname gnode dnode snode bnode modelname <parameters>

          N.B.: one instance of a MOS element MUST be preceeded
          (everywhere in the file) by the declaration of the related
          model.  For instance:
               .MODEL mynmos NMOS( k=1e-4 Vth=0.1 rd=1e6)
               M2 Vgate 0 Vdrain 0 mynmos

        - Resistors:
               Rname n+ n- rvalue

        - Voltage sources:
               Vname n+ n- <dcvalue> <transvalue>

          Transvalue specifies a transient voltage source
               SIN(VO  VA  FREQ TD  THETA)
          where:
             * VO    (offset)

             * VA    (amplitude)

             * FREQ  (frequency)

             * TD    (delay)

             * THETA (damping factor)

             * 0 to TD: V0

             * TD to TSTOP: VO  +
               VA*exp(-(time-TD)*THETA)*sine(twopi*FREQ*(time+TD))

          Currently the damping factor has no effect.

          Pulse
               PULSE(V1 V2 TD TR  TF  PW  PER)

          parameters meaning
             * V1         (initial value)

             * V2         (pulsed value)

             * TD         (delay time)

             * TR         (rise  time)

             * TF         (fall time)

             * PW         (pulse width)

             * PER        (period)

          Currently rise and fall time are not implemented yet.

        - .MODEL cards Defines a model for semiconductor devices

               .MODEL MNAME TYPE(PNAME1=PVAL1 PNAME2=PVAL2 ... )

          TYPE can be:
             * NMOS N-channel MOSFET model

             * PMOS P-channel MOSFET model

             * D    diode model

          The parameter "LEVEL" is currently assigned to the field
          "section" in the call of the element functions by the solver.
          Currently supported values for the parameter LEVEL for NMOS
          and PMOS are:
             * simple

             * lincap
          (see documentation of function Mdiode).

          Currently supported values for the parameter LEVEL for D are:
             * simple
          (see documentation of functions Mnmosfet and Mpmosfet).


     See also: prs_iff, Mdiode, Mnmosfet, Mpmosfet





# name: <cell-element>
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Circuit file parser that can interpret a subset of the spice file
format.