soft-core topic
zipcpu
A small, light weight, RISC CPU soft core
neorv32
:desktop_computer: A tiny, customizable and extensible MCU-class 32-bit RISC-V soft-core CPU and microcontroller-like SoC written in platform-independent VHDL.
neo430
:computer: A damn small msp430-compatible customizable soft-core microcontroller-like processor system written in platform-independent VHDL.
QNICE-FPGA
QNICE-FPGA is a 16-bit computer system for recreational programming built as a fully-fledged System-on-a-Chip in portable VHDL.
mrisc32-a1
A pipelined, in-order, scalar VHDL implementation of the MRISC32 ISA
FPGA-DDR-SDRAM
An AXI4-based DDR1 controller to realize mass, cheap memory for FPGA. 基于FPGA的DDR1控制器，为低端FPGA嵌入式系统提供廉价、大容量的存储。
lxp32-cpu
A lightweight, open source and FPGA-friendly 32-bit CPU core based on an original instruction set
riscV
Open source ISS and logic RISC-V 32 bit project
fpga-uart-tx-rx
Basic UART TX/RX module for FPGA