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From: Jeff Sondeen (sondeen AT ISI DOT EDU)
Date: Tue Oct 28 2003 - 20:17:07 EST

  • Next message: Ronny Bockstaele: "question on the technology file"

    didn't see any followup to this, so i'll "stab" it.
    
    the magic 'router' is a very simple thing whose intent is really for
    perhaps getting signals from your core to your pads, but even then it's
    usually faster to route them manually than prepare a netlist file for
    the router.
    
    it requires a simple grid to handle all layers, so like 8x8 lambda if
    your (symbolic) contacts (like m2c) are 4x4 and metal spacing is 4
    lambda, for example.  then i remember strange behavior unless all pins
    had their LL (lower-left) corner on the grid.
    
    i can dust off an example if you're still interested but i don't think
    the stock magic router will do anyting satisfactory with true standard
    cell routing. also, there's no autoplacer in magic.
    
    /jeff
    
    
    Rajit Manohar writes:
     > 
     > Hi,
     > 
     > Magic can produce GDS stream output and read GDS stream input (using
     > the :calma command) as long as the technology file contains sections
     > for calma I/O.
     > 
     > Magic has some rudimentary routing capability. I normally use the
     > interactive router (:iroute) to route individual nets, but normally I
     > don't use it for large autorouting problems. Maybe others have used it 
     > for this purpose?
     > 
     > -Rajit
    


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