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free spice where do i get it?

Discussion in 'Electronic Design' started by Yzordderex, Nov 8, 2003.

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  1. Yzordderex

    Yzordderex Guest

    I'm looking for a student or demo version of spice that I can get for
    free or under $100.

    I run Intusoft at work that my boss paid good money for. I just can't
    afford to outlay a big bunch of cash right now, and only want to use
    at home for my own projects.

    I will go search the web now, but thought someone might know already.

  2. Boris Mohar

    Boris Mohar Guest


    Boris Mohar

    Got Knock? - see:
    Viatrack Printed Circuit Designs
    Aurora, Ontario
  3. Bill Sloman

    Bill Sloman Guest

    If you are a Linux freak, see

    where there seem to be couple of free Spice packages.

    I actually use Kevin Aylwards's SuperSpice, which has a $60 student

    I've also got a copy of Linear Technology's LTSpice, which is free and
    pretty good

    Search here and on sci.electronics.cad for discussion about LTSpice -
    there is lots of it, mostly favourable.

    For a more comprehensive list, go to Terry Pinnell's web site, where
    he lists some sixty programs.

    Hope this helps.
  4. Dan Mills

    Dan Mills Guest

    I am fairly sure that UCB will still have spice V 3F5 up somewhere, or
    failing that the usaual mirror sites will have it.

    Regards, Dan.
  5. Baphomet

    Baphomet Guest
  6. Baphomet

    Baphomet Guest

  7. Fred Abse

    Fred Abse Guest

    I'm *not* a freak. I'm perfectly normal in all respects :)
  8. Fred Abse

    Fred Abse Guest

    It's still around. Running it here, under Linux.
  9. James Meyer

    James Meyer Guest

    Motorola,, will send you a cute little CD with a demo
    version of Intusoft's SPICE on it. All you have to do is give them enough info
    so they can send you advertising.

    The demo is a little limited, but still very useful. Plus you get lots
    of Motorola's models on the disk.

  10. Chaos Master

    Chaos Master Guest

    I found ancient runes from Yzordderex[] in the floor of
    LTSpice - the best simulator IMHO.
  11. Rich Webb

    Rich Webb Guest

    In addition to those mentioned, the "Lite" version of Beige Bag spice is
    freeware. Limited in the number of parts and nodes supported but
    otherwise functional.
  12. Bill Sloman wrote...
    Or Yzordderex can continue using Intusoft's spice, either their free
    demo download, or better, the CD version from ON Semi, including lots
    of power models,,4367,1020,00.html

    - Win

  13. Guy Parent

    Guy Parent Guest

    Here's another one that goes under DesignLab Eval 8 or MSimEv_8.
    Orginally from Microsim but still available on college sites for

    There are later evaluation versions available but if I recall Orcad
    and Cadence put some limitations on that the Microsim versions didn't
    have, possibly PC board layout.
    The installed program takes up 37.9MB and the documentation 24.5MB
    There is the usual limitations of numbers of components, nets etc.
    I have added several models from National and others over the years.
    It also has an autorouter that I haven't used much.
    Good luck,
  14. Frank Wagner

    Frank Wagner Guest

    Hello Bob,

    sometimes I use WinSpice its free and it worked fairly good for me.
    Look at:


  15. Ken Smith

    Ken Smith Guest

    Beware, the underlying Berkely spice engine used in many older spice
    programs did not check pointers before using them, resulting in access
    violations instead of nice error messages. This would only happen on
    running out of memeory or some strange syntax errors in the input deck. A
    couple of years ago I found the keeper of the source and sent him the
    needed changes.

    Also for Linux, you can use the free Linear spice under Wine. It works
    well under Linux. The auto-updater doesn't seem to be able to find the
    network under wine, but you can just manually download the newer versions
    as needed.
  16. Yzordderex

    Yzordderex Guest

    Thanks everybody. I will run a bunch, maybe all of em. I'm trying
    out the LT version right now.

    best regards,
  17. Eric Y. Chang wrote...
    I think the answer is no, althought they've been thinking about it (see
    the quotes below from a 2002 newsletter). No doubt they as others will
    come around once Linux is more readily-available on the desktop.

    I often ask at CompUsa, Staples, OfficeMax, BestBuy, Circuit City, etc.,
    if they offer any Linux computers for sale. These days they always say,
    "no." But someday the $75 cheaper sales price for saying yes will make
    its impact, and I'm sure they'll eventually be saying, "yes." But in
    the meantime there's always Wine, etc., right?

    Inutsoft quote: "SPICE For Linux"

    "In the last few years Linux has become a viable platform for both client
    and server based computing. IsSpice4 is available on Unix under Solaris
    as the ViewAnalog package from Viewlogic. Intusoft would like to know
    your opinion on Linux. Please write or email Intusoft if you would like
    to see IsSpice4 and possibly ICAP/4Windows ported to Linux."

    I wrote and said yes, but I suspect not many other folks wrote...

    - Win

  18. Winfield Hill wrote...
    Correction, that was from a 1998 newsletter, so it's been five years,
    and clearly it's time to make the point again, but more strongly!

    - Win

  19. Win,
    Why mess with Intusoft when you can get a real
    tool, LTspice, free and it runs on Linux?

    This is the relevant part of the FAQ from the
    help system regarding Linux/WINE:

    Q. Do you have a version of LTspice for Linux?
    A. Not a separate edition, but it does run under
    WINE. The program has been tested on Linux
    RedHat 8.0 with WINE version 20030219.

    Q. OK, I've never used WINE, how do I install that
    on my Linux box?
    A. 1. Check with to find the current
    version of WINE for your system. At the time
    of this writing, for RedHat 8.0, this points
    2. Copy the appropriate .rpm file to your machine
    and open it from nautilus.
    3. Get the file swcadiii.exe from
    In an xterm, execute "wine swcadiii.exe" to
    install LTspice.
    4. There will now be a Linear Technology Logo on
    your gnome desktop. Double click it to start
    or type "wine scad3.exe" from an xterm to
    start the program. That's it!

    Q. The schematic fonts don't scale as smoothly under
    WINE as Windows. Why is that?
    A. WINE is doing the best best it can with the fonts
    it finds. It will do better if you tell it how
    to find the files arial.ttf and cour.ttf from
    your Windows system.

    Q. The PWL additional point editor doesn't look
    right under WINE?
    A. Try using the native Windows .dll from your
    Windows system. The command line to then invoke
    LTspice from WINE is:
    wine -dll commctrl,comctl32=n scad3.exe.

    Q. It seems LTspice is running slightly differently
    under WINE/Linux than windows. Why is that?
    A. LTspice detects whether or not it's running under
    WINE. If so, it works around a few WINE issues.
    You can force LTspice to think it's running under
    WINE with the command line switch -wine. You can
    force it to think it's not with the command line
    switch -nowine in case you're interesting in
    debugging WINE.

    Q. Under Windows, LTspice extends the virtual
    address space for waveform viewing to 64 bits.
    Does that work under WINE?
    A. Yes. It has been tested on waveform files over
    5 Gigabytes in size.

    Q. Under Linux, does it support unlimited component
    count and depth of schematic hierarchy?
    A. Yes. Opps, no. The maximum depth of hierarchy
    is 64 levels but that limit is just there to
    allow detection of infinite subcircuit recursion.
    (Most "unlimited" SPICE's "limit" you to about 21
    levels.) LTspice has no limit on node or
    component count either per page or for the
    entire circuit.

    Q. Does cross-probing while simulation work with
    those slick marching waveforms while running
    under Linux?
    A. Yes.

    Q. So from what version on is LTspice supported
    under WINE?
    A. 2.01g.

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