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Import some particular shape in to Cadence layout L

engine2011

 Hi everyone,

 I want to use standard technology to fabricate a device which is basically a circle shape realized with the toppest level metal layer. Because the process resolution is 0.01um, the smooth brim of circle is not acceptable and will introduce some class a DRC errors. 

 Now I am making the brim of circle replaced by 90 degree polygon to solve these errors. The problem is, if I want to make it a good approximation to a circle, the polygon will be very complex. I can use Matlab to generate this shape without much effort, however, it will be very complex to draw it manually in Cadence. Does cadence have some function to import the shape data from Matlab?

 Thanks!

EF

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  • engine2011
    Hi Andrew,

    We have a question about your code of abXpmToLayout.ils. We have got an Xpm file now, and we tried to load our Xpm file into your code. But we have some problems about importing our file.

    We changed the file name at the line 94 of your code:

    (defun abPixMapReadFile ("/h/efu01/ibm180/final.XPM")

    then the following error showed:

    *Error* defun: illegal type character found in type template - defun(abPixMapReadFile ("/h/efu01/ibm180/final.XPM") let((prt staticFound line data dimensions ... ) unless((prt = &) error("Could not read pixmap file %s" fileName)) rexCompile("static char") while((& && &) (staticFound = &)) when(staticFound (data = t) while(& t) getWarn()) ... ))

    <<< Stack Trace >>>

    load("abXpmToLayout.ils")

    *Error* load: error while loading file - "abXpmToLayout.ils" at line 158

    <<< Stack Trace >>>

    load("abXpmToLayout.ils")

    Could you tell me what's the problem it is? Any other changes should I put into your code for importing our Xpm file. P.S. The Xpm file is 1500*1500 pixel.

    Thanks,

    EF
Reply
  • engine2011
    Hi Andrew,

    We have a question about your code of abXpmToLayout.ils. We have got an Xpm file now, and we tried to load our Xpm file into your code. But we have some problems about importing our file.

    We changed the file name at the line 94 of your code:

    (defun abPixMapReadFile ("/h/efu01/ibm180/final.XPM")

    then the following error showed:

    *Error* defun: illegal type character found in type template - defun(abPixMapReadFile ("/h/efu01/ibm180/final.XPM") let((prt staticFound line data dimensions ... ) unless((prt = &) error("Could not read pixmap file %s" fileName)) rexCompile("static char") while((& && &) (staticFound = &)) when(staticFound (data = t) while(& t) getWarn()) ... ))

    <<< Stack Trace >>>

    load("abXpmToLayout.ils")

    *Error* load: error while loading file - "abXpmToLayout.ils" at line 158

    <<< Stack Trace >>>

    load("abXpmToLayout.ils")

    Could you tell me what's the problem it is? Any other changes should I put into your code for importing our Xpm file. P.S. The Xpm file is 1500*1500 pixel.

    Thanks,

    EF
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