#vlsi — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #vlsi, aggregated by home.social.
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SystemLisp - an HDL simulator written in Common Lisp
#lisp #commonlisp #hdl #rtl #verilog #design #verification #vhdl #systemverilog #vlsi #programming #fpga
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SystemLisp - an HDL simulator written in Common Lisp
#lisp #commonlisp #hdl #rtl #verilog #design #verification #vhdl #systemverilog #vlsi #programming #fpga
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SystemLisp - an HDL simulator written in Common Lisp
#lisp #commonlisp #hdl #rtl #verilog #design #verification #vhdl #systemverilog #vlsi #programming #fpga
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SystemLisp - an HDL simulator written in Common Lisp
#lisp #commonlisp #hdl #rtl #verilog #design #verification #vhdl #systemverilog #vlsi #programming #fpga
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SystemLisp - an HDL simulator written in Common Lisp
#lisp #commonlisp #hdl #rtl #verilog #design #verification #vhdl #systemverilog #vlsi #programming #fpga
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Get an insider look at open-source PDKs from the perspective of Japanese foundries! Jun-Ichi Okamura (AIST) explains how foundries see PDK openness and what it means for semiconductor design. A must-watch for EDA, VLSI and open hardware fans—insightful and practical! #OpenSource #PDK #Foundries #Semiconductors #VLSI #EDA #AIST #Japan #OpenHardware #English
https://peertube6.f-si.org/videos/watch/b5e9f42e-80af-4e98-8a5c-55227902dfdc -
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DashRTL v2025.12 is now available for free trial:
https://dashthru.com/freetrial -
🚀 AI for hardware design is here.
Intel Sr. PE Desmond Kirkpatrick shows how LLMs and the ROHD framework enable agile, test-driven hardware development — for real synthesizable designs.
🎥 https://youtu.be/SAPAi8Y4Z68#AI #Hardware #ROHD #OpenSourceHardware #EDA #VLSI #FPGA #Semiconductors
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Образовательные технологии опробованные в России — работают и в США
Провели мероприятие в Калифорнийском политехническом государственном университете в Сан-Луис-Обиспо. Докладчиками были: ваш покорный слуга Юрий Панчул, два американских инженера проектирующие чип по ускорению ИИ, и китайский студент из Университета Калифорнии в Санта-Барбаре. Идея мероприятия возникла, когда я встретился с выпускником Cal Poly Стенли на конференции самоделкиных OpenSause, и он поведал мне то, что я уже знал из собеседований американских студентов: они изучают в вузе карты Карно, доходят до конечного автомата светофора, отдельно постигают классический 5-стадийный конвейер MIPS (ныне RISC-V), а потом идут на собеседование на работу, и - хоба! - выясняется что их карты Карно никого в индустрии не интересуют, а вопросы идут про сопряжение конвейера обработки данных (не процессорного!) и FIFO, чего они не проходили. Привожу ниже мой отчет на английском.
https://habr.com/ru/articles/961364/
#SystemVerilog #Gowin #Xilinx #Altera #ASIC #FPGA #TinyTapeout #Cal_Poly #Verilog #vlsi
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Another highlight from the #Ubuntu booth at #IndiaFOSS2025 ✨
An attendee tried out Magic (Open Sourve VLSI layout tool) — running smoothly inside an #Ubuntu 25.10 VM created with LXD ⚡
Needless to say, LXD was buzzing at the booth! 🚀
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As RTL shifts from Verilog to SystemVerilog, unexpected compatibility issues often appear late in the flow—during synthesis, FV, LEC, or FPGA compilation. Code may compile fine in sim or lint but later fail due to certain syntax.
We tested 10 examples from the SV 2012 LRM and checked support in major EDA tools (●=supported, ○=not). Full list:
👉 https://github.com/DashThru/SV_compatibility_cases_from_LRMDashRTL will have full SV 2023 LRM syntax coverage, to flag any syntax that may cause cross-tool issues.
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Combine Tcl and Python in a single EDA Shell: tclpysh playground is now online.
https://dashthru.com/playground
( Use 'py' or 'tcl()' command to switch between languages )
#eda #tcl #python #vlsi #ASICdesign -
It's finally the time for open source semiconductor manufacturing. https://www.brickstackr.com/posts/how-to-make-your-own-computer-chip-part-3 #vlsi #semiconductors #hackerfab #opensauce2025
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Today #VLSI chips are uually CMOS, with a single phase clock, and often contain static circuitry. Early #MOS LSI and VLSI chips were PMOS or NMOS, and usually used two-phase or four-phase dynamic logic. I recently wondered why the four-phase techniques couldn't have been used with only three phases, obtaining most of the benefit of four-plase, but increasing circuit density and speed.
Well, I'm late to the party. It's not well-known, but NCR invented that in 1967:
https://patents.google.com/patent/US3497715A -
"Tiny Tapeout is an educational project that makes it easier and cheaper than ever to get your designs manufactured on a real chip!"
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Not every gate is symmetrical w.r.t its inputs. In order to allow asymmetrical gates to be mapped in all cases, all unique permutated AND-INVERTER graphs representing the gate must be present in the pattern matching set. This is obviously a problem for tomorrow..
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Wanted to play around with #VLSI technology mapping using AND-INVERTER graphs. I got as far as reading a cell library in GENLIB format. Now I need to convert the boolean logic expressions into A-I graphs using DeMorgan substitutions. Running out of steam though.
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@rafetoots This thread made me think: besides learning a programming language in depth, I wonder about your knowledge of version control (#git, #github), editors/IDE's (#codium), operating systems (#windows, #linux, #wsl), embedded (#arduino, #pi), hardware (#kicad, #freecad), processor design (#fpga, #vlsi, https://www.nand2tetris.org/ maybe), sub-atomic-physics (joking), and so much more!
It's often the ancillary stuff, or foundational stuff that gets in the way of learning programming.
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Writing a small TCL interpreter to enable TCL in #LunaPnR
Currently it can do fizz-buzz :)
```
set x 1;
while {$x < 100} {
set txt "";
if {$x % 3 == 0} { set txt "FIZZ "; };
if {$x % 5 == 0} { set txt "${txt}BUZZ "; };
puts "$x $txt";
incr x;
}
``` -
If you peer into a microscope at a certain #VLSI microprocessor designed and fabricated recently by faculty and graduate students at the #UniversityOfCalifornia at #Berkeley, you will see something quite startling. There, inscribed in tiny detail next to the initials of the microprocessor designers, is a #Porsche racing car. (j m) #RISC #RiscII #Sun #Sparc #Byte #ByteMagazine #Anno1984
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You’re using … checks notes … any electronic device? Then you should know Lynn Conway.
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Remembering Lynn Conway for her pioneering work leading to VLSI and her personal fight against transgender discrimination
https://hackaday.com/2024/06/14/rip-lynn-conway-whose-work-gave-us-vlsi-and-much-more
https://ai.eecs.umich.edu/people/conway/LynnsStory.html
#VLSI #computerhistory #conway #transgender #ibm #xeroxparc #womenincomputing
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RIP Lynn Conway, Whose Work Gave Us VLSI And Much More - Lynn Conway, American engineer and computer scientist, passed away at the age of 8... - https://hackaday.com/2024/06/14/rip-lynn-conway-whose-work-gave-us-vlsi-and-much-more/ #currentevents #originalart #lynnconway #biography #obituary #news #vlsi
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RIP Lynn Conway, Whose Work Gave Us VLSI And Much More https://hackaday.com/2024/06/14/rip-lynn-conway-whose-work-gave-us-vlsi-and-much-more/ #CurrentEvents #OriginalArt #LynnConway #Biography #obituary #News #vlsi
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Lynn developed "generalized dynamic instruction dispatch" for IBM in 1966. 2 years later she was kicked out, just after Robert Tomasulo published the "Tomasulo Algorithm" for out-of-order execution of floating point instructions, utilizing Lynn's work. Everyone knows Tomasulo (and he did great work, mind you!), but no-one knows Lynn.
Later, in technical compsci, you may stumble upon highly integrated circuits, everyone there knows #VLSI, but not the inventor, our dear Dr. Conway.
Her story, her struggle against IBM who took decades to apologize to her for her mistreatment. She transitioned in darker times and pioneered not "only" in compsci. She was what many would call "greater than life". She died a few days ago.
Today, let's remember Lynn 🏳️⚧️, tomorrow we'll fight on ✊
2/2
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Without Lynn Conway, there would have been no #VLSI revolution, and maybe ultimately no #semiconductor chip industry at all, in the modern sense in which we understand it.
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Lynn Conway passed on 2024-06-09, aged 86, at home in Jackson, MI. She was #professor of EE & CS; engineering #explorer, human #empowerment #advocate. She was #transgender #activist, the #inventor of dynamic instruction handling and the initiator of Mead–Conway #VLSI chip design revolution. R.I.P. 🌻
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On a personal level, Conway gives a hefty share of the credit for her accomplishments to gender transition itself.
"I can’t explain any other way how I could have done what I did," she says.
"I actually became a really different person.”
“Being able to see a moment and be decisive and seize it, and make it happen,” she continues.
“Getting other people all fired up, and working together towards [a] shared mission… new capabilities I didn’t have before,
that completely enhanced my feeling of being alive."That is why she believes that trans people are unusually likely to have ideas ahead of their time,
or to be at the forefront of new artistic or technological movements."We are highly empowered
– in ways that people may not understand
– because of the joyfulness we feel in having been able to do what we do in spite of the difficulties," she says.Despite this, Conway is keen to be seen first and foremost as a talented engineer.
She urges me to read a recent interview with the pop star Kim Petras, who said:
"I just so happen to be transgender, but that’s not all I am... reaching equality is being able to be known as a great artist.”Perhaps there is no contradiction. Conway appears to see transition as just one of many "profound" experiences that can give someone a risk-taking edge
or an unusual perspective,
likening it to a particularly immersive adventure sport.Gender, race, disability, innovation and oppression: as ever for Conway, it’s all connected.
Today she is still drawing connections.
She regularly chats with academics and engineers across the world, sending LinkedIn messages to strangers she finds interesting.
She is well abreast of the microchip war between China and the West,
and sees in artificial intelligences such as ChatGPT the potential for another "unfolding" that multiplies ordinary people’s abilities."Things are changing so fast that every few years is sort of like decades," she says.
"Forces are clashing, and it’s either headed into something joyous or it’s going to go ‘boom’."
Humanity, she argues, is caught in a race between the escalating speed of change and our limited ability to predict and adapt to it.
The current backlash against trans rights is one manifestation of this dynamic;
the next may be over cybernetic "amplification" of our bodies and minds.Nevertheless, Conway is hopeful for the future,
and for trans people’s role in it
– not least because transitioning is "just too much fun" to stop people from doing it."We’re going to watch the trans community become a powerful force
for novel and exciting views about life that have not surfaced before," she says."And people are going to want to listen to what we have to say
– not because we’re trans, but because we’re delivering goods."And [eventually] they forget you’re trans, and wonder ‘how did you get that way?’
And then you can tell them:
‘Well, I lived a pretty adventurous life.’" -
#Asianometry: Japan’s Legendary Semiconductor Breakthrough
https://www.youtube.com/watch?v=ZOKBUI3p_cs
#electronics #VLSI #IntegratedCircuit #SemiConductors #RetroComputing
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#Asianometry: Japan’s Legendary Semiconductor Breakthrough
https://www.youtube.com/watch?v=ZOKBUI3p_cs
#electronics #VLSI #IntegratedCircuit #SemiConductors #RetroComputing
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#Asianometry: Japan’s Legendary Semiconductor Breakthrough
https://www.youtube.com/watch?v=ZOKBUI3p_cs
#electronics #VLSI #IntegratedCircuit #SemiConductors #RetroComputing
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#Asianometry: Japan’s Legendary Semiconductor Breakthrough
https://www.youtube.com/watch?v=ZOKBUI3p_cs
#electronics #VLSI #IntegratedCircuit #SemiConductors #RetroComputing
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Patentstreit mit VLSI: Intel will 949 Millionen US-Dollar Strafe nicht akzeptieren https://www.computerbase.de/2022-11/patentstreit-mit-vlsi-intel-will-949-millionen-us-dollar-strafe-nicht-akzeptieren/ #INTC #VLSI #patents
