CD-ROM Now 11/CD-ROM Now MegaDisc 11 (1995-02).iso/discs/internet/lsi4.txt

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From: [e-mail] (Michael Altarriba)
Subject: comp.lsi.cad Frequently Asked Questions With Answers (Part 4/4) [LONG]
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Archive-name: lsi-cad-faq/part4

  a palette picture file that displays all 52 symbols in a compact grid
  that you can cut and paste from within TeXcad. Each symbol lives in its
  own .mac file and is defined as a 'savebox' so as to reduce memory con-
  sumption. You must add the [bezier] option to your 'documentstyle' com-
  mand. A small manual is provided in both Postscript and .dvi forms.

  The files lcircuit.zip and lcircuit.tar are available for anonymous ftp
  from cscx.cs.rhbnc.ac.uk (134.219.200.45) in directory pub/lcircuit. I
  will also be uploading them to various ftp servers in the coming week.

46: Tanner Research Tools (Ledit and LVS)

  (From Bhusan Gupta <[e-mail]>)

  Low cost, yet very powerful commercial ASIC design tools are available
  from Tanner Research, Inc. in Pasadena, CA.  These products are used by
  industry and universities alike.  Tanner's products are nominally priced
  at $995 per program, with a combined package named L-Edit Pro available
  for $3,495 on the PC.  Universities are offered a 75% discount.  Here is
  a list of their current programs:

  L-EditTM :      A full-custom layout editor with CIF and GDSII
                  input/output.  Features a 32-bit coordinate space,
                  all-angle geometry, unlimited hierarchy and number
                  of layers.  The L-Edit Pro package includes L-Edit/DRC
                  for design rule checking, L-Edit/SPR for automatic
                  standard cell placement and routing, L-Edit/Extract
                  for extracting transistors, capacitors, resistors and
                  generic devices for SPICE-level simulation or comparison
                  to a schematic and LVS ,a netlist comparison tool for
                  topological and parametrical verification.  Optional
                  layout libraries are also available.

  T-Spice:        Circuit level simulator (See item 41 for detail

  GateSimTM :     Gate-level simulator.  A full array of technology mapping
                  libraries are also available.

  Products are available for the PC, Macintosh, Sun and Hp UNIX platforms.
  For more information contact Bhushan Mudbhary at Tanner Research (bhushan
  @ tanner.com), phone [phone] and fax [phone].

47: SIMIC, a full-featured logic verification simulator.

  (From comp.archives.msdos.announce)

  SIMIC is a full-featured logic verification simulator.  It has been
  demonstrated that SIMIC can uncover a number of critical design errors
  that other simulators miss.  SIMIC has shown superior accuracy and
  throughput when compared to competitive products.  Here are some of
  SIMIC's important features:

  -  Mixed-mode simulation allows the free intermixture of true
     bilateral switches (ideal and resistive), gate, plus functional level
     built-in and user defined primitives.

  -  A wide variety of output, whose detail, content and format are, to
     large extent, user defined.

  -  A large repetoire of simulation options and controls that can be
     applied interactively, or in batch operation, and simplify
     trouble-shooting of your design.

  -  Automated Test equipment emulation, allows debugging test programs
     using SIMIC troubleshooting techniques.

  -  Sophisticated hazard analysis including:  Spike, Pulse, Conflict,
     Oscillation, Setup, Hold, Pulse-width, Near (what-if)
     detection, among others.  Hazard propagation is also supported.

  The student version of SIMIC is limited to a maximum of 500 elements
  (parts).  In all other respects it is the same program as the commercial
  offering.  The PC student version requires a 386 or better and at least 2
  Meg of memory.  Both a DPMI and a VCPI version are included in the pack-
  age.  Both versions require EMS *NOT* be disabled.  SIMIC is also avail-
  able on Sun and other platforms.

48: LASI CAD System, IC and device layout for IBM compatibles

  (from Mike Fitsimmons <[e-mail]>)

  On behalf of the author I have uploaded to WSMR-SIMTEL20.Army.Mil:

  pd1:<msdos.cad> LASI41A.ZIP     LASI v4.1 IC layout CAD prgm: unzip in
  LASI41B.ZIP     LASI v4.1 IC layout CAD prgm: unzip in LASI41C.ZIP
  LASI v4.1 IC layout CAD prgm: unzip in LASIDEMO.ZIP    LASI v4.1 DEMO
  drawing: unzip in

  The LASI CAD System has been developed to do integrated circuit and dev-
  ice layout on almost any IBM compatable personal computer.

  LASIDEMO is a small IC layout to be used as a demonstration when first
  learning to use LASI.

  I offered to pay the author for some sort of site license for this pro-
  gram, but he refused, saying that he actually wants educational institu-
  tions to use it for free.  What a guy!

49: EEDRAW, an electrical/electronic diagramming tool for IBM compatibles

  (from <[e-mail]>)

  I have uploaded to WSMR-SIMTEL20.Army.Mil:

  pd1:<msdos.graphics> EEDRAW24.ZIP    Electrical Engineering drawing (with
  layers)

  This is the 2.4 release of EEDRAW, an electrical/electronic diagramming
  tool for the IBM PC.

  pd1:<msdos.graphics> EEDSRC24.ZIP    C sources for EEDRAW24.ZIP program.
  TC/BC++

  This is the source of the EEdraw 2.4 program. Please read the readme file
  in the primary archive for information on other source programs needed
  such as the Libary files.

50: MagiCAD, GaAs Gate Array Design through MOSIS

  (from Tom Smith <[e-mail]>)

  The Mayo Graphical Integrated Computer Aided Design (MagiCAD) system is a
  package which provides a comprehensive design environment for the
  development of digital systems, from initial concept to post-layout
  verification of integrated circuits (ICs).  MagiCAD focuses on the
  development of high-speed Gallium Arsenide (GaAs) gate array designs.
  Specialized electromagnetic simulation tools are provided to address high
  clock rate issues such as crosstalk and reflections, which become more
  important as clock rates exceed several hundred MHz or signal edge rates
  become less than 500 pico- seconds. MagiCAD provides all the necessary
  tools for high clock rate GaAs IC design, and is also integrated with
  non-Mayo circuit, logic, and fault simulators.

  MagiCAD provides a lower risk approach than full-custom design for
  universities wishing to perform digital GaAs design through MOSIS.  This
  is done by providing a gate array design environment where low-level
  transistor design and layout issues have already been solved and
  abstracted into a technology library of pre-defined cells. This frees the
  student or researcher to solve the still challenging tasks of system and
  gate-level design and layout to get high clock rate chips fabricated
  through MOSIS that meet all specifications.

  MagiCAD supports hierarchical, top-down, middle-out, or bottom-up
  development styles. MagiCAD has been used in the design of many GaAs
  chips that have been successfully fabricated. The MagiCAD electromagnetic
  modeling tools have been used in the analysis of many actual packages,
  multi-chip modules (MCMs), and printed circuit boards (PCBs), uncovering
  and avoiding problems that are commonly associated with high-frequency,
  fast edge-rate designs. The Vitesse Fury (TM) GaAs VSC2K gate array is
  provided as a MagiCAD technology library, and has been used for both gra-
  duate and undergraduate student chip designs.

  Functionality that has been integrated into MagiCAD includes:

            o  Vitesse VSC2K GaAs gate array technology library
            o  Database which integrates all tools
            o  Schematic entry through a general purpose graphics editor
            o  Circuit simulator
            o  Logic and timing simulators
            o  Fault analysis
            o  Place and route tools
            o  Layout verification tools
            o  Retargeting from generic design to specific technology
            o  Output to standard GDSII format for mask creation
            o  Electromagnetic analysis
               -  Cross section entry with graphics editor
               -  Multilayer multiconductor transmission line (MMTL) modeling
               -  Network tool for solving cases with many transmission line
                  components
               -  Lossy and non-lossy cases
               -  Frequency and time domain result displays
               -  Used for analyzing complex design paths, through chip, MCM,
                  and PCB

          The Vitesse VSC2K has the following characteristics:

            o  HGaAs-2 (TM) process                    o  2700 available gates
            o  Enhancement/depletion MESFET process    o  80 signal pads
            o  2 GHz flip-flop toggle rates            o  40 power, ground pads
            o  280 psec loaded gate delays             o  2.4 watts maximum
            o  170 mils x 135 mils                     o  ECL or TTL I/O
            o  132 pin LDCC package available          o  2 routing layers

  The Mayo Foundation has used MagiCAD to design several VSC2K designs that
  have been fabricated through both MOSIS and Vitesse. These designs have
  measured operating frequencies of 500 MHz to 1 GHz, depending upon the
  section of the circuit being tested.  The general application thrust of
  these designs has been components which are being used to evaluate MCM
  technologies for high speed systems, as well as high speed data genera-
  tion and acquisition circuits.

  The University of Wisconsin - Milwaukee has used MagiCAD to design
  several VSC2K designs that have been fabricated through MOSIS. These
  designs have simulated clock rates from 100 MHz to 600 MHz. The general
  application thrust of these designs has been components of digital signal
  processors with medical image processing applications.  The descriptions
  of these VSC2K personalizations that have been designed and fabricated
  include:

            o  8-bit Booth's algorithm multiplier
            o  4-bit arithmetic logic unit
            o  8-bit combinatorial multiplier
            o  24-bit carry look-ahead adder

  The Defense Advanced Research Projects Agency (DARPA) has authorized and
  funded Mayo to supply MagiCAD to universities in the U.S. for research
  and educational purposes. The direct cost to the universities for the
  MagiCAD software itself is zero (although there may be costs for any
  non-Mayo software that universities may want, as well as possible costs
  to get the proper hardware/software platform).  Mayo-supplied MagiCAD
  training and support costs to these institutions is funded by DARPA, and
  is therefore free to the universities.

  While the MagiCAD tools are presently only available for VAX/VMS environ-
  ments, work is presently underway to port MagiCAD to POSIX-compliant
  platforms (POSIX is the IEEE "UNIX-like" portable operating system defin-
  ition). First POSIX platforms presently planned to port to include DECs-
  tations and HP workstations, likely availability of MagiCAD on these
  platforms is second half of 1993.

  The general steps for a university to begin using MagiCAD for digital
  GaAs gate array design include:
    1) Contact Mayo Foundation to acquire MagiCAD software
    2) Contact MOSIS to acquire general MOSIS information
       and Vitesse-specific technology information.

  Point Of Contact For Acquiring MagiCAD And MagiCAD Support:

          Thomas J. Smith
          Mayo Foundation
          Special Purpose Processor Development Group
          200 First St. S. W.
          Rochester, Minnesota 55905
          Telephone:  [phone]
          Telefax:    [phone]
          EMail:      [e-mail]

          Point Of Contact For Acquiring General MOSIS Information
                          And Vitesse-specific Technology Information:

          Sam Reynolds
          The MOSIS Service
          USC/ISI
          4676 Admiralty Way
          Marina del Rey, CA  90292-6695
          Telephone:  [phone] x172
          Telefax:    [phone]
          EMail:      [e-mail]

51: XSPICE, extended version of Spice

  (from Jeff Murray <[e-mail]>)

     I am one of the developers of XSPICE, and at the risk of being deluged
  with requests for specific information on the tools, I can volunteer to
  answer at least some questions. Currently there is no ftp site for infor-
  mation; if there were, this posting would likely be unnecessary. However,
  we are prohibited from posting even the User's Manual due to technology
  export restrictions.

     The following is a copy of the original press release on XSPICE.  If
  anyone would like additional clarification beyond this, or if some
  aspects of the release are unclear, we can certainly take this as an
  opportunity to remedy the situation. Please note that at the current time
  there are many dozens of individuals who have obtained a copy of the
  tools; if they have any comments or observations to make, I'm sure they
  would be most welcome to other members of the user community.

                          XSPICE Press Release

                            January 2, 1993

                   Georgia Tech Research Corporation

  XSPICE, introduced at the 1992 International Symposium on Circuits and
  Systems (ISCAS), is an extended and enhanced version of the popular SPICE
  analog circuit simulation program originally developed at the University
  of California at Berkeley. XSPICE was developed at the Georgia Tech
  Research Institute (GTRI) as a tool for simulating circuits and systems
  at multiple levels of abstraction. XSPICE permits a user to simulate ana-
  log, digital, and even non-electronic designs from the circuit level
  through the system level in a single simulator.  A special Code Modeling
  feature allows users to add new models directly into the simulator exe-
  cutable for maximum simulation speed and accuracy. Code models are writ-
  ten in the C programming language allowing arbitrarily complex behavior
  to be described. Code model development tools are provided to simplify
  the process of creating new models, compiling them, and linking them with
  the XSPICE core.

  XSPICE provides a rich set of predefined code models in addition to the
  standard discrete device models available in SPICE. The XSPICE code model
  library contains over 40 new functional blocks including summers, multi-
  pliers, integrators, magnetics models, limiters, S-domain transfer func-
  tions, digital gates, digital storage elements, and a generalized digital
  state-machine.

  Digital functions are simulated in XSPICE through an embedded event-
  driven algorithm added to the SPICE core. This algorithm is coordinated
  with the analog simulation algorithm to provide fast and accurate simula-
  tion of mixed-signal circuits and systems. The event-driven algorithm
  supports a new "User-Defined Node" capability allowing additional event-
  driven data types to be defined and used.  XSPICE comes with a 12-state
  digital data type as well as a user-defined node library that includes
  'real' and 'integer' types useful in simulating sampled-data systems such
  as Digital Signal Processing algorithms.

  XSPICE is currently available for UNIX workstations and is supplied in
  source code form allowing users to customize and extend the simulator and
  models to particular needs. To date, the simulator has been successfully
  compiled and used on HP Apollo and Sun workstations. The XSPICE simulator
  and User's Manual are available with a cost-free license arrangement from
  the Georgia Tech Research Corporation for a distribution charge of US
  $200 (including first class postage within the U.S.A.; an additional US
  $25 is required for overseas delivery by air). For further information,
  please contact the Office of Technology Licensing, Georgia Tech Research
  Corporation, Georgia Institute of Technology, 400 Tenth Street, Atlanta,
  GA 30332-0415, USA, or phone [phone] (voice) or [phone]
  (FAX). Internet users may send email to [e-mail] to obtain
  copies of the order form and license agreement (please include the word
  "license" in the subject header when mailing to this address).

52: MISIM, a model-independent circuit simulation tool

  (from Bardo Muller <[e-mail]>)

  University of Washington has recently released the updated MISIM simula-
  tor.  The new release (Sun version) is now available through ftp with
  anonymous login. The node address is 128.95.31.10. The release is under
  /pub/misim.SUN.2.3.a. If you have any question, please don't hesitate to
  contact us ([e-mail]). Or, you can contact Prof.
  Andrew Yang at 206-543-2932.

    Attention:
    ---------

  We are currently re-writing the whole MISIM system in C with broader
  design consideration. The noise and temperature simulation capability
  will be incorporated into our next release. It would have more flexible
  front end with better simulation performance.  The new version is
  expected sometime around the end of this summer.  Since the actual
  release no longer reflected the level of our technology, we removed it
  from our ftp directory.

                                         MISIM Development Team
                                         Department of Electrical Engineering
                                         University of Washington

                      MISIM 2.3A Release:  General Information
                     ------------------------------------------

  A) New capabilities:
     ----------------

  MISIM 2.3A is distinguishable from the previous release in that is now
  integrates a transistor-level mixed analog-digital simulator based on
  analytical digital macromodeling. The mixed-signal simulator is equipped
  with a front-end translator which accepts standard SPICE netlist syntax

  and converts it into MISIM mixed-mode syntax. Analytic macromodels for
  digital subcircuits are generated and loaded into MISIM core simulator

  automatically. Synchronized simulation is then performed for the digital
  subcircuits (processed by analytic solution) and the analog subcircuits
  (processed by proven analog simulation algorithms) with much accelerated
  speed and superior analog accuracy ( within 3-5 % of SPICE).

  The MISIM mixed-signal simulator supports all standard Berkeley MOS model
  (Level 1, 2, 3, BSIM 1, BSIM 2). User-defined MOS models of arbitrary
  complexity are also supported.

  Currently, the procedure of processing analytic digital macromodeling
  cannot be applied to bipolar devices (G-P model). Hence, all bipolar
  transistors will be simulated as "analog" components.

  MISIM's X-window graphic environment, WISE, has been upgraded to support
  the mixed-signal simulation capabilities.

  B) Model Improvements:
     ------------------

  MISIM 2.3A now supports improved SPICE models (MOS, Diode, BJT). Many of
  the model discontinuities have been resolved leading to more reliable
  simulation. The MOS Level 2 and Level 3 models have also been upgraded to
  an improved charge-conserved models.  The standard SPICE diode model has
  been enhanced to a non-quasi-static model capable of simulating accu-
  rately the diode recovery effect.

  These improved SPICE models are released as linked models. Users are not
  recommeded to unload these improved models.

  C) A New Parser:
     ------------

  MISIM 2.3A incorporates a new netlist parser which supports two different
  modes:

  1) Standard SPICE netlist syntax - default mode.  2) Enhanced SPICE net-
  list syntax - MISIM mode.

  This new capability is designed to make MISIM completely spice-
  compatible. In addition, the new parser now handles symbolic names and
  expressions.

  D) Updated Documentations:
     ----------------------

  An updated MISIM User's guide is available in postcript form. On-line
  documentations is also provided.

  E) Future Release (MISIM 3.0):
     --------------------------

  1) The next release will include a new C-version analog simulator which
  has been benchmarked to be a factor of 2 to 3 times faster than the
  current fortran version.

  2) The mixed-signal simulator will be enhanced to improve digital cover-
  age rate (percentage of a mixed A/D circuit which can be processed by the
  analytic digital macromodel) for better simulation performance.

53: Nelsis Cad Framework

  (from their 'README' file)

  Release 4.3 is the latest version of the Nelsis IC Design System.  It
  contains  a CAD framework that puts a substantial added-value under the
  fingertips of the designer  by  organizing  the  design information  and
  keeping  track  of  the  design  evolution.  It permits integration of
  tools of  different  origin  and  achieves run-time  efficiency.   The
  framework  is  based  on intelligent management of meta data on top of
  the actual design descriptions; it administers high level information
  about the design activities and the structure and status of the design,
  rather than operating at the level of the detailed design descriptions.

  The  framework  services,  such  as  flow   management,   version manage-
  ment,  concurrency  control and state management, have been implemented
  on top of  the  meta  data  management  module.   The framework  controls
  access to the design objects and administers meta data by performing
  OTO-D queries.  Tools operate on  top  of the framework via the Data
  Management Interface, obtaining access to the design data according to a
  nested transaction schema.

  The Nelsis CAD Framework is available, together with a set of design
  tools for demonstration purposes, through anonymous ftp from
  dutente.et.tudelft.nl (130.161.144.6), in /pub/nelsis.

54: APLAC, a system-level simulator and IEEE-488 measurement tool

  (from Sakari Aaltonen <[e-mail]>)

          -----------------------------------------
                         APLAC 6.1
          -----------------------------------------

  General information

  APLAC, a program for circuit simulation and analysis, is a joint develop-
  ment of the Circuit Theory Lab of Helsinki University of Technology and
  Nokia Corporation's Research Center. The main analysis modes are DC, AC,
  noise, transient, oscillator, and (multitone harmonic) steady state.
  APLAC can also be used for measurements with IEEE-488 apparatus.  APLAC's
  transient analysis uses convolution for correct treatment of components
  with frequency-dependent characteristics. Monte Carlo analysis is avail-
  able in all basic analysis modes, as is sensitivity analysis in DC and AC
  modes. N-port Z, Y, and S parameters, as well as two-port H parameters,
  can be used in AC analysis. APLAC also includes a versatile collection of
  system level blocks for the simulation and design of analog and digital
  communication systems.

  Component models

  Too many to be listed here. In addition to familiar Spice models, a great
  number of microwave components (microstrip/stripline) are included. Sys-
  tem models include formula-based and discrete-time models useful in RF
  design. The model parameters of the components may have any functional
  dependency on frequency, time, temperature, or any other parameter. Users
  can create new components by defining their - possibly nonlinear - static
  and dynamic characteristics in APLAC's interpreter-type language. Spice-
  syntax models can be imported.

  Input

  APLAC reads its input - the nodes, branches, and model parameters of the
  components - from a text file. Model libraries can be created and
  included. Expressions are written in a program-like manner; user func-
  tions may be defined. Conditional and looping control structures are sup-
  ported.

  Output

  The output results from one or several sweeps of any user-defined func-
  tion of the circuit parameters, time, frequency, or temperature. The
  results may be printed or plotted in rectangular or polar coordinates, or
  on the Smith chart. Graphics output can be directed to an HPGL- or CSDF-
  type file, or to a graphics file for later viewing.

  Optimization

  APLAC includes several optimization methods: gradient, conjugate gra-
  dient, minmax, random, simulated annealing, tuning (manual optimization)
  and gravity center (design centering). Any parameter in a design problem
  can be used as a variable and any user-defined function may act as an
  objective.

  Machine environment

  Unix: X11;  PC: MS-Windows (math coprocessor required).

          Contact information
          -------------------
          Martti Valtonen                         Heikki Rekonen
          Helsinki University of Technology       Nokia Research Center
          Circuit Theory Laboratory               Hardware Design Technology
          Otakaari 5A, SF-02150 Espoo, FINLAND    P.O.Box 156, SF-02101 Espoo,
                                                  FINLAND
          Fax:  [phone]                      Tel:  [phone]
          e-mail:[e-mail]              Fax:  [phone]

  Free (university version) binaries for HP9000/700, Sun4, and PC machines
  are available via FTP from nic.funet.fi:/pub/cae/aplac. Help files, PS
  manuals, and collections of APLAC examples are in the same directory.

55: SLS, a switch-level simulator

  (from comp.lsi.cad)

  DELFT UNIVERSITY OFFERS UNIQUE SWITCH-LEVEL SIMULATOR

  SLS is a switch-level simulator that can be used to simulate the logic
  and timing behavior of large digital circuits that are described at the
  (mixed) MOS transistor, gate and functional level.  It has fast and accu-
  rate algorithms to predict the timing behavior of MOS circuits containing
  > 100,000 transistors.  MOS transistor-level circuit descriptions are
  easily mixed with gate-level and functional-level circuit descriptions,
  where the behavior of the latter are described in the C programming
  language.  There is an X-window based user-interface to graphically edit
  the input signals and to inspect the simulation output signals. The same
  interface is used to alternatively simulate the circuit with the well-
  known circuit simulator SPICE.  SLS has already been used by many people
  at many different sites, and numerous chips have been designed with it.
  SLS is now made available world-wide to serve as a useful design and
  verification tool to the international design community.  Apart from
  being used as a stand-alone tool, SLS can also be used as a part of the
  popular design system for Sea-Of-Gates circuits OCEAN, or it can be con-
  nected to the advanced Nelsis CAD framework.

  The SLS simulator has three different simulation levels:

  1. Purely logic simulation based on abstract transistor strengths:
     This level more or less behaves similar to the original switch-level
     model as proposed by R.E. Bryant.  It computes logic states by
     only considering node states and transistor types.

  2. Logic simulation based on exact transistor dimensions and node
     capacitances: This level uses resistance division and capacitance
     division algorithms to compute logic states. It finds correct logic
     states in much more situations than conventional switch-level
     simulators, e.g. when a resistance division occurs between a saturated
     transistor and a non-saturated transistor.

  3. Logic and timing simulation based on transistor and node parameters:
     RC time constant evaluations are used to approximate real voltages by
     PIECEWISE-LINEAR VOLTAGE WAVEFORMS. This not only provides delay times
     for the circuit, but is also delivers an accurate representation for
     transient effects like spikes and races.

  Apart from electrical network elements like MOS transistors, resistors
  and capacitors, an SLS network may contain (i) gate primitives like
  inverters, nands, nors, etc. and (ii) user-defined function blocks like
  roms, shiftregisters, multipliers.  The behavior of function blocks is
  described by the user in the C programming language: it is specified by
  the user how the values of the output terminals and the state variables
  are computed from the values of the input terminals and the state vari-
  ables.

  For more information about SLS, see,

    "Switch-level timing simulation," P.M. Dewilde, A.J. van Genderen,
    A.C. de Graaf, Proc. ICCAD 85 Conf., Santa Clara, Nov. 1985,
    pp. 182-184

    "SLS: An Efficient Switch-Level Timing Simulator Using Min-Max Voltage
    waveforms," A.J. van Genderen, Proc. VLSI 89 Conf., Munich, Aug. 1989,
    pp. 79-88.

    "SLS: Switch-Level Simulator User's Manual," A.C. de Graaf, A.J. van
    Genderen, Delft University of Technology (available for ftp at the
    address below).

  Availability:

  SLS is written in C and runs under UNIX and X-windows.  It runs, among
  other things, on Sun SPARC stations, HP 9000 series 700/800 machines, and
  PCs running Linux.  The program is available for free under the terms of
  the GNU General Public License.  It can be retrieved via anonymous ftp
  from the directory pub/sls on dutentb.et.tudelft.nl.

  It is also possible to obtain SLS as a part of the OCEAN system for the
  design of Sea-Of-Gates circuits.  This system can be obtained from the
  directory pub/ocean on donau.et.tudelft.nl.  The OCEAN system among other
  things contains a layout-to-circuit extractor that can extract large lay-
  outs and that stores the result directly in the database that is read by
  SLS.  Furthermore, SLS is available as a tool in the Nelsis CAD framework
  from the directory pub/nelsis on dutente.et.tudelft.nl.  The latest ver-
  sion of SLS can always be found on dutentb.et.tudelft.nl.

  For questions, remarks and bug reports, contact

    Arjan van Genderen
    Delft University of Technology
    Department of Electrical Engineering
    Mekelweg 4                          phone: [phone]
    2628 CD  Delft                      fax: [phone]
    The Netherlands                     email: [e-mail]

  56: OCEAN, a sea-of-gates design system

  (from Patrick Groeneveld <[e-mail]>)

          About OCEAN: the sea-of-gates design system
          -------------------------------------------

  OCEAN is a comprehensive chip design package which was developed at Delft
  University of Technology, the Netherlands. It includes a full set of
  powerful tools for the synthesis and verification of semi-custom sea-of-
  gates and gate-array chips.  OCEAN covers the back-end of the design tra-
  jectory: from circuit level, down to layout and a working chip. In a nut-
  shell, OCEAN has the following features:

          + Available for free, including all source code.
          + Short learning curve making it suitable for student design courses.
          + Hierarchical (full-custom-like) layout style on sea-of-gates.
          + Powerful tools for placement, routing, simulation and extraction.
          + Any combination of automatic and interactive manual layout.
          + OCEAN can handle even the largest designs.
          + Running on popular HP, Sun and 386/486 PC machines, easy
            installation.
          + Includes three sea-of-gates images with libraries and a
            200,000 transistor sea-of-gates chip.
          + Can be easily adapted to arbitrary images with any number of layers.
          + Interface programs for other tools and systems (SIS, cadence, etc.)
          + Robust and 'combat-proven', used by hundreds of people.

   How to retrieve OCEAN and additional documentation?
   ---------------------------------------------------

  The entire OCEAN system is available for free via anonymous ftp, gopher
  or on tape. A powerful installation script is included, so you can get
  started very quickly without hacking up the code. You can retrieve OCEAN
  and additional documentation via:

          anonymous ftp: donau.et.tudelft.nl -  directory pub/ocean
          gopher:        olt.et.tudelft.nl (port 70) or use the path
                         World --> Europe --> Netherlands -->
                         Delft University of Technology Electronic Engineering
                         --> Research activities -->
                         The OCEAN sea-of-gates Design System

  We advise to retrieve first the documents with the user manual. (The file
  'ocean_docs.tar.gz').  If you have any questions, remarks or problems,
  just contact us:

          Patrick Groeneveld or Paul Stravers
          Electronic Engineering Group, Electrical Engineering Faculty
          Delft University of Technology
          Mekelweg 4, 2628 CD   Delft  The Netherlands
          Phone: [phone]  Fax: [phone]
          Email: [e-mail]