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Thread: sky130's mpw_precheck has an oeb check

5 Discord messages from ℹ️ - Information/general/threads/sky130s-mpwprecheck-has-an-oeb-check.md.

Category: ℹ️ - Information Parent channel: #general Thread ID: 1436186116788326441

Messages: 5

message-1436251823811067935

2025-11-07T07:11:59.065+00:00 — Leo Moser (mole99) (@mole99)

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message-1436251828525465610

2025-11-07T07:12:00.189+00:00 — Leo Moser (mole99) (@mole99)

Content

Hi @bailey!
Thanks for asking, but I don't think this is necessary for wafer.space.

Since the users can swap out the pad types in the pad ring, they can simply use an input-only pad when they need one.
Also, as we don't have the complexity of Caravel, the final behaviour can be directly observed in the top-level GL simulation, which includes the pad cells.
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message-1436259011644362752

2025-11-07T07:40:32.778+00:00 — bailey (@bailey8889)

Content

Thanks @Leo Moser (mole99) . I'm a little late to the game here. Could you direct me to the documentation on how to create the pad ring?
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message-1436261120322179083

2025-11-07T07:48:55.526+00:00 — Leo Moser (mole99) (@mole99)

Content

Sure! It's this template here: https://github.com/wafer-space/gf180mcu-project-template

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message-1436261304804442208

2025-11-07T07:49:39.51+00:00 — Leo Moser (mole99) (@mole99)

Content

You install Nix, run `nix-shell` to enable the environment, clone the PDK `make clone-pdk` and run LibreLane `make librelane`.
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