lxp32-cpu
openpiton
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| lxp32-cpu | openpiton | |
|---|---|---|
| 2 | 1 | |
| 55 | 581 | |
| - | 3.8% | |
| 0.0 | 4.4 | |
| over 1 year ago | 30 days ago | |
| Assembly | Assembly | |
| MIT 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.
openpiton
What are some alternatives?
neorv32 - :rocket: A tiny, customizable and extensible MCU-class 32-bit RISC-V soft-core CPU and microcontroller-like SoC written in platform-independent VHDL.
apio - :seedling: Open source ecosystem for open FPGA boards
zipcpu - A small, light weight, RISC CPU soft core
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.
VexRiscv - A FPGA friendly 32 bit RISC-V CPU implementation
microwatt - A tiny Open POWER ISA softcore written in VHDL 2008
riscv_vhdl - Portable RISC-V System-on-Chip implementation: RTL, debugger and simulators
spam-1 - Home Brew 8 Bit CPU Hardware Implementation including a Verilog simulation, an assembler, a "C" Compiler and this repo also contains my research and learning. See also the Hackaday.IO project. https://hackaday.io/project/166922-spam-1-8-bit-cpu
mandelbrot_riscv_assembler - An example in bare metal RV32 assembly for the longan nano board
mrisc32-a1 - A pipelined, in-order, scalar VHDL implementation of the MRISC32 ISA