hi there i am doing resistor layout. i got no drc ...
# ieee-sscs-dc-23a
Atif Khan
08/18/2023, 5:25 AMhi there i am doing resistor layout. i got no drc while doing layout but when i do drc full ( drc update , drc complete ) then i got this weird error, i have tried for 3 different circuits with different lengths and widths still i got same issue of unsalicided resistor spacing to contact although i didn't placed it tool it self placed a contact. I have tried npoly_u and ppoly_u. Nplus_u and pplus_u have no such drc.
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Tim Edwards
08/20/2023, 1:32 AMTim Edwards
08/20/2023, 1:53 AMOn further review, the rule is correct and the resistor contacts are drawn incorrectly. The resistor rules require that the contact must be an exact distance from the resistor, and the device generator is drawing it 0.005um too far away. I will correct the device generator. If needed, you can correct the layout by hand by moving the contacts.
Tim Edwards
08/20/2023, 1:54 AMI have fixed the device generator and open_pdks will update overnight (in about 5 hours) on github. Note that the correction requires rebuilding the PDK in open_pdks.
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Atif Khan
08/20/2023, 3:42 AM@Tim Edwards thanks a lot, another issue I found is when I extract pplus after flattening my magic just hang.( Although I don't needed that but maybe you can review this).
Atif Khan
08/20/2023, 7:41 AM@Tim Edwards should i update this to 0.33 or upgrade to new version? For reference I am using volare
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Tim Edwards
08/20/2023, 1:56 PM@Atif Khan: I don't know when volare will get updated with the fix, so I suggest that you just change it manually from 0.335 to 0.33 so that you can get correct devices generated.
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Atif Khan
08/20/2023, 1:57 PMThanks I will change it manually.
Atif Khan
08/21/2023, 4:08 AM@Tim Edwards after upgrading to latest
Atif Khan
08/21/2023, 4:31 AMwhen i put guard ring on top and bottom DRCs apperared again also for x repeat 15 and Y repeat 5 there is no probem but for x repeat 17 and Y repeat 7 with guard ring getting error. i have tried 34 x 14 y and 30 x repeat and 10 y repeat i found no DRC ony at this specific case of 17 x repeat and 7 y repeat i am getting error
Atif Khan
08/21/2023, 5:02 AMexcept 17 x repeat and 7 y repeat with guard ring this spacing is 130 boxes only in this particular case it shrink to 125 i don't know why i have tried different combination in all combination i am getting 130 box distance except this 17 x repeat and 7 y repeat with length 2.35 and w 1. i have changed length to L 1 and W 0.8 with x repeat of 17 and y repeat of 7 no DRC
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Tim Edwards
08/21/2023, 12:49 PMFrom three posts above: Read the error message. It's telling you exactly what's wrong.
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