dick_freebird
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I can see value in a standalone, GDS-II DRC checker. However I imagine that the operation of DRC here, has to take advantage of the GDS-II layout loaded-database infrastructure, and to "bust out" the DRC you'd probably end up duplicatin…
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In the example, LVS should produce a layout device with no schematic match. So the problem would be caught. Does it matter -how- you catch an error? More than just time spent getting there (DRC precedes LVS usually)? I wonder whether what's need…
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Might start off with inspecting the (presumably) loaded DB and see whether it still contains multiple topcells. And be sure that those $args had predefined values that work; were there preceding error yips, about that?
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I'd guess that you have to find a DRC-only means of 1) finding same-named (or swappable, more fun) terminals of same-named devices, and put them in orderly lists 2) create some sort of polygon that represents a contiguous connection and "kno…
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Maybe your macro search path then needs to have ~/.klayout/pymacros included as well as the default .klayout? What happens if you move the Python scripts to ~/.klayout level?
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Not sure about the bit regarding "you need to define a Spice reader delegate to capture model subcircuits". To me, all that it wants is to spit out an "X" element card, rather than M/Q/D/R/C/? netlist lines. The subcircuit de…
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I think there may be another "layer" behind this - what of the case that the resistor's isolation is not "bulk" (i.e. the P- handle / epi) but some other isolation region like (say) a P+ resistor in NWell, or my above example of …
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Layer properties can be saved in .lyp and reloaded as-saved, at any time. Technology setup usually points at such a .lyp, but if you are saving by another means (the layer display details) maybe the technology save-as, only saves the .lyp file po…
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There is a "netgen" which performs any-to-any netlist compare. Not easy to find although it's part of the efabless / opencircuitdesign MAGIC-based toolchain (there are other "netgen" developments, newer and unrelated, which Boga…
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Or ^Z, though that might "undo" the whole command?
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I am still interested to see a "select mask" capability based on a layer / polygon. My thinkiing goes to the old Cadence behavior (seemingly broken in IC6 layout, but remaining in schematic / symbol editors) that keyed on the instance/dr…
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Is the data already local on that SSD? Or coming from some other source? I imagine that the load-rate could be dependent on other things such as media data rate (transferring from an older USB2.0 thumb drive at 10MBPS, or over a 10Mbps Ethernet bra…
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This doesn't look like the install / build instructions I followed the last time I built from source. I don't recognize 'build' command in all that. I recommend you find and follow the basic instructions, and look at the log for complaints about d…
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I tried something out. A multi-vertex polygon can have a single vertex selected by Partial tool: (Image) There you can see an "innie" vertex selected. Now if you delete that vertex, the shape becomes fully convex. So seems like, i…
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My impression is that the problem involves a convex shape, and vertex-snapping perhaps is making local concavities that become "notch" errors? I guess there "could" be logic that makes all vertex snapping "radially outwar…
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A cursory check's impressions: 1) Tight and pretty, more than just a html-stack "paste job". Prettier than anything I've done by hand. 2) Cross-links and index seem to work perfectly 3) Got to a "Classes" section which was all…
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I guess my first advice would be "Know your audience". Or audiences. Are you trying to document the PDK for users, maintainers, those who might build upon it elsewhere? All of these, some of these? And do you believe they all want the s…
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On the note of marker layers, you might like to take a dive into the mainstream foundry PDK (if this is meant to get real) and look for these kinds of layers ("capacitor/drawing"?) and also see if there's a multifinger MOM cap already dr…
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That's going to be tricker because it's a 3D problem (vertical and lateral fringing dominates). An extractor -could- handle it but whether this one does, I do not know. Would be some more elaborate code than a vertical only, plate-plate capacitance …
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Maybe a version incompatibility, or a sub-dependency of 'xcb' that is unsatisfied? There's a jumble of Qt4. Qt5 out there as I make it out, and if you've pulled from various sources, may have some sorting out to do?
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What if you extended your script to add (bearing in mind that my advice on scripting is not knowledge based) a 'foreach' that runs through all the "not_the_target" layers and outputs them all as-was? Maybe it needs a "null operation&q…
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Would "print to PDF" (using one of the PDF viewers) do the job if you set the DPI option appropriately? And maybe paper size as well, if it's breaking into multiple pages? You should tell us more about why you "need to" use PDF…
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I prefer a (well constructed) PDF manual for reasons such as a "search window" and linear document that you don't have to bounce between pages up / down to navigate, the navigation pane is handy if headings are harvested to support that…
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I have found the move, duplicate commands' action awkward, most especially the loss of selection if you don't click exactly on the selected item(s) - then that point is taken as reslect / deselect. It would be preferable to me if the selection befo…
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To me the "Manage Technologies" and dependents, are the PDK more or less, only "disaggregated", more of a list of pointers and settings. I could see some value to making a flat-file image from a golden technology-settings, buil…
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In my experience (plenty, but largely trailing-edge) the layers don't change much (or at all) even when there's a lot of PDK "churn". I believe there's some facility for importing Cadence PDKs already (how completely, do not know, but be…
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I have never seen such a rule, although it's in the category of "why wouldn't you?". In my world however the design of fat bussing proceeds from analysis of current density for reliability, and ohmic drops for parametric performance lea…
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If you have set up a "Technology" then the name / path for the .lyp is one of the entries in the forms. Technology choice is "sticky" so should autoload until you change technologies or somehow lose the remembered settings.
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In my opinion the answer is to insist on simplicity, let it be stupid as long as it has the functions that are needed to start, stop and scale the vertical axis (would side-diffusion be out of the question?) to build the third dimension and slice …
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Is GDS-II even capable of dealing with circles (in form of center, radius)? I thought circles were all N-sided polygons, once you get to GDS-II data (or in some CAD universes, even in the native data structure).