dick_freebird
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I don't know about modern mask fab algorithms or nuthin', but my gut says those would be better able to deal with more, smaller, less complex polygons / shapes than the kinds that require klayout, and maybe mask fracture differently, to think up its…
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Many orgs seem to have a habit of calling the top cell "TopCell". When you do part after part after part, you can stand to lose a few repetitive questions. If you get to name the baby, then you might develop a habit that saves thought.…
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We used to stick to 45 snap and groundrule compliant widths. Prettier brings more DRC trouble.
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I don't know specifically, was unaware that XFAB had open source PDKs. But I encourage you to check on the going-forward availability of any XFAB flow you pick, because some seem to have gone bye-bye according to a client who's used them.
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Why not go ahead and pull latest-latest from the repository? Then all you need to know is "latest version of dependencies, too". Random salad brings mystery chunks.
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There is no such thing as a true circle in a Cartesian step-grid system. It's all vectors or pixels and not the ideal. I always up the vertex-count on drawn circular features using the primitive. Kinda fond of 72 as it's got so many clean-symmetry …
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Maybe if every layer of the path-resolution was "bite sized" as a shall variable, the user might find a way do this abstraction. Personally I like full hard paths nobody can mess with, but I am not subject to CAD management or its dic…
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I'd take this a step further and maybe look at making a "CAD administration for non-sysadmins" cookbook. We all want to jump ahead to the fun, but running the Zamboni first (and maybe at half time) does improve the game-play. If it spr…
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As long as full path works, I'm good.
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When I imported a R12 .dxf file I got named layers with no evident numbering? Tag-along "technology" layers from last chip DB were still there with names and numbers both. I imagine there's utility for some script, that could parse DXF f…
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A script would have to be "taught" by someone or something that "knows" the meaning of each layerNum. A skilled layout or design engineer would have some amount of the required "gut". A PDK layer table of course woul…
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I sense that the question is about the cursor itself and whether its movement can be made "steppy". I believe the cursor movement is a separate thing from the behavior of objects being moved or made, by it. Those commands are subject …
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Personally I use .png and TIFF is about as fat as an image file can be. But I only do interactive. That all seems orderly and works fine (though I could ask for "persistent background image" to not have to re-attach every time). What I do…
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It would be occasionally useful, if the Cells window offered a right-click "print this puppy" option (following the choice of display-form). To copy-buffer or to chosen-file.
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Seems to me that a literal, polygon for polygon translation ought to be an option. I'd guess that the problem is vectors that are "loose", with no "bundle" to decide which merge and which do not in subsequent steps? Perhaps thi…
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Does the install bundle not state which dependencies and versions? If not, then you should put that question to the maintainers. However the error I see, looks more like maybe a PCell:code_pile sync / content problem, it seems a bit of code h…
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Didn't ctrl-S, ctrl-Q use to have some low level UNIX function, like stop / start TTY scrolling? Might be some unintended "overlaps" there....
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I am still very interested to get a "selectable extents" feature, like the old Brand X instance/dwg layer used to act. Trying to dead-hit the zero width instance origin is tough and using full extents is its own kind of pain once you get…
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I think ideally the "recognition" and "extraction" should be so "meta" that an arbitrary bundle of polygons can map to an arbitrary device which has bound to it an arbitrary netlisting format template (name, nodes, mod…
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Are you sure that a different element (like JFET) wouldn't do? Or something like BSIMSOI rigged for fully depleted "bodyless" MOSFET? Check out what the CMOS RF switch people do.
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Maybe the answer is to not try to run Ruby scripts when you don't have Ruby libraries.
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Is there or is not, an upper limit default to number of errors displayed? And was the test case of sufficient size, to expose that?
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I'll interject that some foundries have a "waiver process" (Brand X has a PVS "waiver tool", it's lame). But you can in some cases negotiate a "relaxation" if it's not a "production mask" and semi-automate s…
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I don't want to see anything "closed" or removed, even worse. We have an endless stream of newbies and serious but unfamiliar adopters and even if a question is "answered" its nuances or follow-up ones may still want a home. And…
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Off the cuff, I wonder whether there is a "please, no more!" error-display-limit hard coded, or if you are lucky some setting (I see such things in simulators' options, "maxwarn", "maxerr" like. Maybe there is a built…
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If you have no technology defined and no .lyp loaded (clean start) then streaming in your gds file would import every found layer/purpose pair. Now you can inspect for those "xic" layers, and you could save the layers to a new .lyp for …
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Looks to me like the topCell name is "TOP". What happens if you edit it to be "inverter" in the extracted netlist, or assert "--topcell=TOP"? Perhaps the layout netlister allows you to assert the topCell name, to get…
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It was unkind of Brand X to make bindkeys for the same action, different between schematic/symbol and layout editors. Still trips me up after decades.
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I believe this is the tip of a coming iceberg, "chiplet mania" is going to demand ability to have "multi-tech meta-PDKs" if bottom-to-top design of 2.5D ICs is going to be a thing (true 3D, you're gonna need that third dimension …
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Pixels are inherently integer and therefore are going to end up toggling around rounding error. Grain of sand or no grain of sand. Dust is with the wind.