- Libresilicon-developers - libresilicon.com

Mask order
by David Lanzendörfer 21 Nov '18

21 Nov '18

Hi folks I've just ordered the 5 masks after multiple pre-launch fixes. I'd say they should arrive in around 5 work days. On Friday I've got some more qualification courses but I'm actually already qualified to use the machines for building at least CMOS and metal interconnect. So as soon as the masks arrive I'll get started. Cheers David

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Third round: Release candidate
by David Lanzendörfer 21 Nov '18

21 Nov '18

Hi I've now rendered a new GDS2 file with all the changes suggested by you folks. I fixed the last details and now don't see anything extraordinary anymore. Can you have a look at the output and see whether you spot an error I missed? https://github.com/libresilicon/PearlRiver/blob/master/Layout/gds/PearlRive… Thanks David

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Review: Second release candidate
by David Lanzendörfer 20 Nov '18

20 Nov '18

Hi all After yesterdays Mumble session I've now added the missing structures Ferenc has pointed out. Please everyone look over the GDS2 file, if no more mistakes have occured I'd say we can go and order it. https://github.com/libresilicon/PearlRiver/blob/master/Layout/gds/PearlRive… Cheers David

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Reminder - next Mumble Session on November 18, 2018 21.00 HKT
by Hagen SANKOWSKI 17 Nov '18

17 Nov '18

Hello List! Just a small reminder for our next Mumble Sessions on this Sunday, November 18 at 21.00 Hong Kong Time. Please join us as usual at our Mumble Server with IP 109.109.202.102 at Port 64738, the Channel is IC. On the agenda are (at least) this topics - Review the PearlRiver Die - Mask Ordering Happy to hear from you! Hagen

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While designing hopefully backdoor free chips
by Hagen SANKOWSKI 17 Nov '18

17 Nov '18

you should be aware of stuff mentioned in this talk from 32c2. The original in German: https://media.ccc.de/v/32c3-7146-hardware-trojaner_in_security-chips and the english translation: https://www.youtube.com/watch?v=eQA0UBoJ4eo CU on 35c3! Hagen.

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Review before mask order
by David Lanzendörfer 17 Nov '18

17 Nov '18

Hi all Hagen and I are done so far with reviewing the mask set. Please have a look at the GDS2 file here and review it as well: https://github.com/libresilicon/PearlRiver/blob/master/Layout/gds/PearlRive… If you can't spot any further errors we're going to order it tomorrow night after the mumble session. Cheers David

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Xic
by Tobias Kaiser 16 Nov '18

16 Nov '18

Hello, great to hear from the list that you guys are making some progress! I recently stumbled upon the open-source IC design software Xic [1], which includes schematic entry, layout and simulation. It is quite easy to install and I liked it quite a bit. I thought this might be interesting for LibreSilicon at the current stage, as an alternative to Magic or QtFlow. Best wishes Tobias [1] https://github.com/wrcad/xictools

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Metalcaps and beta release
by David Lanzendörfer 15 Nov '18

15 Nov '18

Hi Ferenc We decided that it's too risky to include the caps for the alpha release, especially because we're now under pressure to deliver at least something for the congress. So Hagen and I decided that we just go ahead now and at least get the alpha release working. It's pretty cheap to make mask sets at the university where we're prototyping, so we will manufacture another mask set after the congress which will include caps. Priority right now is to get CMOS working. I hope that's ok. Cheers David

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Chaos Communication Congress assembly
by David Lanzendörfer 14 Nov '18

14 Nov '18

Hi all Everyone who would like to join the 35c3 in Leipzig has now the last chance to order one online. Afterwards without insurance of availability there might be some left to buy on arrival, but I wouldn't suggest gambling: https://tickets.events.ccc.de/35c3 We've got the big talk accepted, so be prepared for a 1.5 hour talk from Hagen and me at the congress. Hope to see you there. Also please tell me if you come to the congress so that we can allocate a space for you to sit in our assembly. Cheers David

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Metal caps
by David Lanzendörfer 12 Nov '18

12 Nov '18

Hi Ferec I've been thinking about reducing the energy of the nimplant/pimplant field implant steps and then making the implant stop nitride layer thinner on top of the diode so that we can use that nitride layer as as well as dioelectricum. So we could have polysilicon, then nitride, and then a metal layer on top. Would do you say? Nitride is a high-k material with a relative permittivity of around 7-8 compared to silicon oxide with around 4. I think a junction with 50nm depth still is good enough? Cheers David

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