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Isshiki Lab
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A lab that designs dedicated semiconductor circuits from programs written in C.

AboutAbout the lab
The program you write becomes the circuit itself
The Isshiki Lab researches design methods for application-specific processors and for the SoCs (systems on chip) that incorporate them.
The lab develops C2RTL, a CAD tool that automatically generates circuit descriptions (RTL) from the processing flow written in C/C++.
It aims to build a foundation that lets people design hardware as flexibly and readably as software.
In addition, the lab works on circuit design tailored to specific uses, such as arithmetic circuits for deep learning, information security, and biometric authentication.
Key terms
- SoC
- An integrated circuit that packs functions such as computation, memory, and communication onto a single chip.
- RTL
- A design description that expresses a digital circuit in terms of data flow and timing.
- RISC-V
- An open instruction set standard that anyone can use free of charge. Custom instructions can also be added.
ResearchResearch themes
The lab studies mechanisms that allow application-specific processors tailored to a purpose to be designed as if writing software. It works on methods for creating circuits from C/C++ programs and on processor design using those methods.
*Illustrative imageCreating Dedicated Circuits from C
The lab develops C2RTL, which converts the processing flow of a processor written in C/C++ directly into a circuit description (RTL). Because circuit behavior can be tested in software, debugging becomes easier.
*Illustrative imageRISC-V Processors and Development Platform
The lab designs processors for RISC-V, an instruction set that anyone can use freely, using C2RTL. The processors are equipped with an MMU and caches so that Linux can run, and they also incorporate arithmetic units and circuits for deep learning.
MembersFaculty
The Isshiki Lab consists of faculty members, secretaries, doctoral, master's, and undergraduate students, and researchers.
- ProfessorTsuyoshi IsshikiPublications ↗
- Assistant ProfessorLi DongjuPublications ↗
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images.
- Top image: “Circuit image on Rubylith” Camera Operator: TSGT Bob Wickley / Public domain (cropped)
- Creating Dedicated Circuits from C: “Code on computer monitor (Unsplash)” Markus Spiske / CC0 (cropped)
- RISC-V Processors and Development Platform: “RISC V prototype chip - closeup” Derrick Coetzee (User:Dcoetzee) / CC0 (cropped)
- Related lab (本村・藤木研究室): “Freescale MPC8245 integrated processor die shot” Martijn Boer / Public domain (cropped)
- Related lab (小尾研究室): “Datacenter Server Racks ( )” Carl Lender / CC BY 2.0 (cropped)
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