riscv-tests
neorv32
| riscv-tests | neorv32 | |
|---|---|---|
| 9 | 77 | |
| 783 | 1,429 | |
| 2.3% | - | |
| 7.5 | 9.9 | |
| about 24 hours ago | about 4 hours ago | |
| C | C | |
| GNU General Public License v3.0 or later | BSD 3-clause "New" or "Revised" License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
riscv-tests
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Computerraria: A fully compliant RISC-V computer inside Terraria
Fully compliant to RISC-V how? Is it conforming to a specific RVI profile? The project states "By emulating a complete rv32i instruction set inside the wiring system of Terraria, we push back speeds to the early 70s era, tossing the ball firmly back into the court of silicon engineer without losing any software functionality."
So this is building a RISC-V *microcontroller* but what version of the ISA? 2.2 from 2017? Is it sucessfully passing conformance tests (https://github.com/riscv-software-src/riscv-tests)? I don't want to dunk on the project, but the title is over-selling and not scoping the context of the work. I look forward to some more updates from @misprit7!
Note: I'm the working group lead for distro-integration within the RISC-V Software Ecosystem (RISE) group.
- Verification
- Starting my Final Year Project on Architectural Validation of a RISC-V Core
- Efficient Way To Generate Test Benches For MIPS Processor?
- We need some support
- Available (official) test suite?
- Looking for an rv32i asm program that covers all possible scenarios of all instructions for testing
- Compliance tests official repository
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Tips on building a RISC-V processor on FPGA
Always test each of your changes on a battery of tests, like the riscv-tests. Have a way to generate a commit log of instructions and write back values and compare against an ISA simulator like spike or https://github.com/chipsalliance/dromajo.
neorv32
- An example of how to add the A ISA extension's LR/SC operations into an open-source architecture
- NEORV32 - A tiny, customizable and highly extensible MCU-class 32-bit RISC-V microcontroller-like SoC written in platform-independent VHDL
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Recommendations for RISC-V on FPGA
How about NEORV32?
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SUGGEST AN OPEN SOURCE RISC-V CORE DESIGNED IN VERILOG
GitHub - stnolting/neorv32: 🖥️ A tiny, customizable and highly extensible MCU-class 32-bit RISC-V soft-core CPU and microcontroller-like SoC written in platform-independent VHDL. this one is good but is written in VHDL though
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RISCV CPU using PL on Pynq Z2 Development Board
NEORV32 is an open source soft core and very well documented. I would recommend you to take a look at it and play around a bit. And it is certainly possible to have a soft core running on only the PL side without PS interference.
- A tiny 1-Wire controller for FPGAs (in VHDL)
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Anyone want to share some embedded projects they have done?
Maybe not a classic (whatever that means...) project, but I am working (together with others) on a RISC-V microcontroller for FPGAs: https://github.com/stnolting/neorv32
What are some alternatives?
riscv-arch-test
VexRiscv - A FPGA friendly 32 bit RISC-V CPU implementation
dromajo - RISC-V RV64GC emulator designed for RTL co-simulation
linux-on-litex-vexriscv - Linux on LiteX-VexRiscv
riscv-mini - Simple RISC-V 3-stage Pipeline in Chisel
picoMIPS - picoMIPS processor doing affine transformation
upduino-projects - Various VHDL projects I've worked on for the Upduino v2.0 and v3.0
riscof
chipyard - An Agile RISC-V SoC Design Framework with in-order cores, out-of-order cores, accelerators, and more
riscv-compliance
lxp32-cpu - A lightweight, open source and FPGA-friendly 32-bit CPU core based on an original instruction set