mithro

8 ms·

1.
by mithro 25d ago
There are a number of efforts to make low volume production of compatible parts - see https://github.com/rejunity/z80-open-silicon There are also FPGA emulated versions.
2.
by mithro 1mo ago
Hackerfab.org is a bunch of people trying to create a reproducible version of Sam's work.
3.
by mithro 2mo ago
https://www.linkedin.com/posts/hirosh-dabui-a5367443_linux-r...
4.
by mithro 2mo ago
The design was taped out on the first wafer.space run (see https://github.com/wafer-space/ws-run1 ) but I have not heard if it actually worked or not.
5.
Wafer.space – $7k USD for 1k custom chips(crowdsupply.com)
11 points by mithro 1y ago|2 comments
6.
by mithro 1y ago
wafer.space has just opened our first pooled manufacturing run of GF180MCU with the purchase deadline of 28th Nov 2025. Think of it like OHS Park for silicon! You provide a 20mm2 design in the open source GF180MCU technology and you get bac
7.
by mithro 1y ago
Things like my https://wafer.space ($7k USD), TinyTapeout.com (<$200 USD) and ChipFoundry.io (~$15k USD) are making it much cheaper to do IC design. There are a huge number of designs from Tiny Tapeout which are all public -
8.
by mithro 1y ago
There is plenty of updates on the website at https://theopenroadproject.org/ - Including a pretty good report on what happened in 2024. Also take a look at the Open Source EDA BOF from the DAC conference - https:/&#x2
9.
by mithro 3y ago
The team at Antmicro put together this pretty cool visualisation flow for this stuff using only open source tools -> https://antmicro.com/blog/2023/11/open-source-signal-integri...
10.
by mithro 4y ago
https://antmicro.com/blog/2022/01/fomu-keystroke-injector/
11.
by mithro 4y ago
I also have a general offer to send people who contribute to the open source FPGA tooling and ecosystem free Fomu boards.
12.
by mithro 4y ago
The Tomu family also has; - The Fomu (FPGA Tomu) - https://fomu.im/ and https://workshop.fomu.im/ - The Qomu (ARM+eFPGA Tomu) - https://tomu.im/qomu.html - The Somu (Secure Tomu) - https:&
13.
by mithro 4y ago
I afraid I don't recall the status of DSP blocks in the open source toolchains for Xilinx hardware. Even if the basics are supported I'm sure there are plenty of DSP features that are not. Many configurations of VexRISCV work fine
14.
by mithro 4y ago
I have a Google Doc at < https://j.mp/softcpus-on-fpgas > which includes a bunch of information about what type of performance has been achieved on modern Xilinx FPGAs. You can generally do quite a bit of parallelism, s
15.
by mithro 4y ago
The open source toolchain doesn't quite support the PCIe interface yet but all the other stuff should work in theory. The best place to see what works is the F4PGA examples documentation at < https://f4pga-examples.readthe
16.
by mithro 4y ago
When did you last check? The Yosys+VPR toolchain currently supports a full Linux capable SoC with Ethernet and DDR memory on the Arty A35T (which has a Xilinx Artix 7 part), see the example at https://f4pga-examples.readthedocs.i
17.
by mithro 4y ago
While the news seems to focuses on ML and RISC-V, there is a huge amount of *other* activity in the silicon space. With [Google working to improve the open source EDA tools + PDKs while also providing free manufacturing]( https://
18.
by mithro 4y ago
Checkout Surelog - https://antmicro.com/blog/2020/12/ibex-support-in-verilator-... and the more recent usage in https://github.com/siliconcompiler/siliconcompiler
19.
by mithro 5y ago
On a semi-related note, Google has also been investigating in improving support for SystemVerilog support in open source tooling -> https://opensource.googleblog.com/2021/09/open-source-system...
20.
by mithro 5y ago
All these are good points but missed a key thing. The interchange format includes a computer readable description of the FPGA which tells the tooling what is available inside the FPGA and how they can be connected.
21.
by mithro 5y ago
Except that nextpnr is one of the tools supporting the interchange format and you can see the status at https://symbiflow.github.io/fpga-interchange-tests/
22.
by mithro 5y ago
Project F ( https://projectf.io/posts/fpga-graphics/ ) has a lot of cool examples with visually interesting output.
23.
by mithro 5y ago
If you are motivated by learning rather than practical usage, FPGAs are a great way to learn more about how things like CPUs or peripherals can be designed. It is also a way to understand how to evolve hardware and software at the same ti
24.
by mithro 5y ago
Google has been working on solutions to make it easier to explore this type of issue (and mitigation techniques), see https://opensource.googleblog.com/2021/11/Open%20source%20DD...
25.
by mithro 5y ago
Google is working on platforms to make this easier to explore this problem, see https://opensource.googleblog.com/2021/11/Open%20source%20DD...
26.
by mithro 5y ago
Does Speedify have an open source client? I'd be interested in paying for the service but not willing to run closed source software locally and then send all my traffic to it.
27.
by mithro 6y ago
FWIW Google is working on improving the support for SystemVerilog in open source tools. On the developer tooling side, there is https://github.com/google/verible for linting, code formatting and code indexing. On the a
28.
by mithro 6y ago
This is pretty cool but I think it doesn't focus enough on the fact that code which isn't run / tested regularly is most certainly broken. Some friends at Antmicro developed a little tool called "tuttest" ( https:&
29.
by mithro 8y ago
If you buy the Tomus from CrowdSupply ( https://www.crowdsupply.com/sutajio-kosagi/tomu ) it comes injection molded case designed by Sean 'xobs' Cross (who actually ran the campaign). Doing plastics is well out
30.
by mithro 8y ago
Sadly, I don't think there is a bigger EFM32 which has the same footprint but maybe they have released new parts since I last looked. IIRC GnuK uses the chopstx library which has already been ported (see https://github.com&#

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