lxp32-cpu
neorv32
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| lxp32-cpu | neorv32 | |
|---|---|---|
| 2 | 77 | |
| 55 | 1,415 | |
| - | - | |
| 0.0 | 9.9 | |
| over 1 year ago | 7 days ago | |
| Assembly | C | |
| MIT License | BSD 3-clause "New" or "Revised" License |
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lxp32-cpu
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Minix
If you're willing to go REAL slow, there's still FPGAs. Something like this perhaps. Adoption would be pretty damned limited though, so your point stands.
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What is a list of all softcores that were designed purely using VHDL?
I used this one https://github.com/lxp32/lxp32-cpu as base for building a RISC-V softcore.
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?
zipcpu - A small, light weight, RISC CPU soft core
VexRiscv - A FPGA friendly 32 bit RISC-V CPU implementation
RISC-V-Guide - RISC-V Guide. Learn all about the RISC-V computer architecture along with the Development Tools and Operating Systems to develop on RISC-V hardware.
linux-on-litex-vexriscv - Linux on LiteX-VexRiscv
microwatt - A tiny Open POWER ISA softcore written in VHDL 2008
picoMIPS - picoMIPS processor doing affine transformation
riscv_vhdl - Portable RISC-V System-on-Chip implementation: RTL, debugger and simulators
upduino-projects - Various VHDL projects I've worked on for the Upduino v2.0 and v3.0
openpiton - The OpenPiton Platform
chipyard - An Agile RISC-V SoC Design Framework with in-order cores, out-of-order cores, accelerators, and more
fpga-zynq - Support for Rocket Chip on Zynq FPGAs