Top 3 Scala chisel3 Projects

XiangShan

32 4,305 9.3 Scala

Open-source high-performance RISC-V processor

Project mention: Loongson 3A6000: A Star Among Chinese CPUs | news.ycombinator.com | 2024-03-16

Are you calling for the government to pick a winner? The Chinese word for this fierce if at times chaotic competition is "juan". It worked for them in EV and PV. The outcome remains to be seen in chips and commercial space launches. But even their mostly (ex-)students-run open source Xiangshan RiscV project https://github.com/OpenXiangShan/XiangShan shows a remarkable level of sophistication.

chisel

25 3,708 9.7 Scala

Chisel: A Modern Hardware Design Language (by chipsalliance)

Project mention: Calyx: Intermediate Language for Hardware Accelerators | news.ycombinator.com | 2024-02-26

My first instinct was to ask "Does this play well with CIRCT?" And thankfully they answer that right away in the README.
I'm personally of the opinion that there is a LOT of room for improvement in the hardware design tooling space, but a combination of market consolidation, huge pressure to meet deadlines, and an existing functional pipeline of Verilog/VHDL talent is preventing changes.
That's not to say "Verilog/VHDL are bad", because clearly they've been good enough to support nearly all of the wonderful designs powering today's devices. But it is to say, "the startup scene for hardware will continue to look anemic compared to the SaaS scene until someone gives me all of the niceties I have for building SaaS tools in software."
A huge amount of ideas (and entire designs) start off as software sims, which enables kernel/compiler engineers to start building out support for new hardware before it's manufactured.
There is some interesting work going on at SiFive building hardware with Chisel[1], as well as some interesting work lead by a professor at William and Mary to improve simulations[2].
1: https://www.chisel-lang.org
2: https://github.com/sarchlab/akita

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broccoli

2 10 0.0 Scala

A soft multimedia/graphics processor prototype in Chisel 3 (by Chlorophytus)

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).