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      Magic is an electronic design automation (EDA) layout tool for very-large-scale integration (VLSI) integrated circuit (IC) originally written by John Ousterhout and his graduate students at UC Berkeley. Work began on the project in February 1983. A primitive version was operational by April 1983, when Joan Pendleton, Shing Kong and other graduate student chip designers suffered through many fast revisions devised to meet their needs in designing the SOAR CPU chip, a follow-on to Berkeley RISC.
      Fearing that Ousterhout was going to propose another name that started with "C" to match his previous projects Cm*, Caesar, and Crystal, Gordon Hamachi proposed the name Magic because he liked the idea of being able to say that people used magic to design chips. The rest of the development team enthusiastically agreed to this proposal after he devised the backronym Manhattan Artwork Generator for Integrated Circuits. The Magic software developers called themselves magicians, while the chip designers were Magic users.
      As free and open-source software, subject to the requirements of the BSD license, Magic continues to be popular because it is easy to use and easy to expand for specialized tasks.


      Differences


      The main difference between Magic and other VLSI design tools is its use of "corner-stitched" geometry, in which all layout is represented as a stack of planes, and each plane consists entirely of "tiles" (rectangles). The tiles must cover the entire plane. Each tile consists of an (X, Y) coordinate of its lower left-hand corner, and links to four tiles: the right-most neighbor on the top, the top-most neighbor on the right, the bottom-most neighbor on the left, and the left-most neighbor on the bottom. With the addition of the type of material represented by the tile, the layout geometry in the plane is exactly specified. The corner-stitched geometry representation leads to the concept of layout as "paint" to be applied to, or erased from, a canvas. This is considerably different from other tools that use the concept of layout as "objects" to be placed and manipulated separately from one another. Each concept has its own strengths and weaknesses in terms of both practical use and speed of computation. The corner-stitched representation is particularly well suited to searches within a single plane, for which it excels in speed. It is not particularly well suited to extremely large databases: The need to maintain four pointers for each tile, as well as the need to store tiles representing the space between areas of material on a layout, makes it more memory-intensive than object-based representations.
      An extension to the corner-stitched geometry representation called the "split tile" method, added in version 7.1, allows true representation of non-Manhattan geometry. This method allows each tile in the database to specify two material types, in which case the tile is regarded as being bisected by a diagonal line from corner to corner, with one material type on one side of the diagonal and the other material type on the other side of the diagonal. An additional flag specifies whether the diagonal runs from the top left corner to the bottom right, or the top right corner to the bottom left. The split-tile method has the advantage that nearly all rules that apply to corner-stitched geometry apply, unaltered, to split tiles. A further advantage is that all non-Manhattan geometry must have corners lying on the database internal grid. This makes it impossible to generate geometry that is off-grid within a single plane, a rule error for most fabrication processes that is a common problem with object-based representations.


      = Design rule checking

      =
      Magic features real-time design rule checking, something that some costly commercial VLSI design software packages don't feature. Magic implements this by counting distance using Manhattan distance, which is much faster to compute than Euclidean distance. Magic versions from 7.3 properly compute Euclidean distance when given the drc euclidean on command. Euclidean distance checks are a trivial extension of the Manhattan distance checks, and require very little overhead. On a straight-line edge, the Manhattan and Euclidean distances are the same. Only on corners do the two distances diverge. When checking corners, it is only necessary to keep track of the direction of search from the corner point. Any geometry found inside the square representing the Manhattan distance from the corner undergoes an additional check to see if the same geometry lies outside the quarter-circle radius representing the Euclidean distance. Since this additional check is applied only to geometry found in violation of the Manhattan distance rule, it is not invoked often, so the computational overhead is very small.
      Magic currently runs under Linux, although versions exist for DOS, OS/2, and other operating systems. Magic is frequently used in conjunction with IRSIM and other simulation programs.


      Internals


      It uses Tcl/Tk under the hood.


      File formats




      = Importing and exporting

      =
      Magic supports CIF/Calma GDS files.


      See also


      XCircuit
      Netgen


      References



      Notes


      External links



      Magic VLSI Layout Tool
      Magic, Man Pages & Tutorial
      Magic, Old version
      IRSIM
      VLSI Layout of 16 bit Full Adder using Magic software

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    Magic Software | Systems Integration Platform, Business Automation

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    The Magic Software List - Third Party Products - MTG Salvation

    Jun 7, 2019 · Purpose: Cockatrice is an open-source multiplatform software for playing card games, such as Magic: The Gathering, over a network. It is fully client-server based to prevent any kind of cheating, though it supports single-player games without a network interface as well.

    The Magic Software List - Retired Forums - MTG Salvation

    Apr 23, 2014 · Purpose: Cockatrice is an open-source multiplatform software for playing card games, such as Magic: The Gathering, over a network. It is fully client-server based to prevent any kind of cheating, though it supports single-player games without a network interface as well.

    [Official] Magic Workstation Thread - MTG Salvation

    Aug 8, 2013 · Download the .txt file from the Magic Software forum. The topic should read similarly to "[WWK] Complete Magic Workstation Worldwake Patch (145/145)". Open MWS. Go to "View -> Library Mode". Click a card in both the top and bottom grid. Go to "Tools -> Analyze/Add/Remove Sets". Type the full set name in the appropriate area (for example ...

    Play Magic against the Computer -- New Program - MTG Salvation

    May 17, 2019 · I also posted this in the Magic Software forum. I thought regular Magic players would be intereted also. MTG Forge lets you play against the computer using all the rules of a real game. Currently it has 365 cards and it even includes some Future Sight cards. You can play in constructed, sealed, and draft modes.

    Ways to Play Magic Online - Articles - MTG Salvation

    Magic Workstation tries really hard to look like MTGO (here's a screenshot). Does it succeed? A good many players out there swear by it becuase it's a good alternative to MTGO. In Magic Workstation, you have access to a ton of cards, but although they have the artwork of Magic cards, the mana, card outline, and set symbols aren't true to the card.

    Best MTG inventory manager? - Magic General - MTG Salvation

    Jun 8, 2016 · I use Magic Assistant to keep track of my decklists, but it's also able to keep track of your collection (that's just not particularly something I'm interested in spending my time on). It's got strong card filtering capabilities, is easily capable of differentiating between card you own and card you don't, multiple import/export formats ...

    MTG Gatherer Extractor v7.3e (Database & Pics Assistant)

    Dec 8, 2024 · The software gathers information from gatherer.wizards.com and magiccards.info. The card database can be saved as CSV or XML. I could see that many people are looking for MtG Database for MTG online shops, personal websites or applications.

    MTG DUELIST - Free software to play Magic online

    Jan 5, 2022 · MTG Duelist is a free software for playing Magic: The Gathering online. The client also provides a single-player mode, which allows users to test the decks offline. MTG Duelist simulates a paper Magic match. Use the integrated voice chat to speak to your opponent and declare attackers, phases, targets, etc. You can play matches up to 4 players ...

    For Shop Owners. What card inventory software? - Magic …

    Jun 1, 2015 · Most of his business is through board games, miniatures, and sealed magic product. He's looking to branch out; carry singles and hire a full-time employee to deal with them. I know there is some options for software for maintaining card inventories, I've looked at one or two, but was looking to get some feed back.

    Anyone good with cockatrice? - Third Party Products - Other …

    Sep 16, 2011 · 13 Actors I Hope Get Cast As Planeswalkers In Legendary's New Magic Cinematic Universe Magic: The Gathering Drops New Lo-Fi Tracklist To Hype You For Aetherdrift Legendary Entertainment Is Developing A Magic: The Gathering Movie And Television Universe