Onramp-FPGA

Onramp-FPGA is a FPGA-based system-on-chip with a 32-bit Onramp processor.

The goal of this project is to have the Onramp toolchain running directly on a FPGA board.

Refer to my notes for more details.

Requirements

• Onramp installation (https://github.com/ludocode/onramp)
• OSS CAD Suite (https://github.com/YosysHQ/oss-cad-suite-build)

Getting Started

Simulator

source /path/to/oss-cad-suite/environment
cd sim
make run ONRAMP_BIN=/path/to/onramp/build/posix/bin

ULX3S FPGA Board

Generate a SD card image:

export ONRAMP_BIN=/path/to/onramp/build/posix/bin
cd scripts
./mkimg.sh
cd ..

Flash the SD card image sd.img.

source /path/to/oss-cad-suite/environment
cd ulx3s
make prog

Open a terminal at 115200-N-8-1 and press the enter key.