DmitryZlobec / yrv-plus-omdaz-16

16bit YRV-Plus RISC-V CPU for OMDAZZ board with PS/2 port and Serial port

Scripts description

In Plus/boards/omdazz/ run

  01_clean.bash                   Clean project
  05_synthesize_for_fpga.bash     Synthesize project and load ro FPGA
  06_configure_fpga.bash          Load project to FPGA
  07_upload_soft_to_fpga.bash     Upload binary using UART
  

You need USB-to-Serial adapter for loading binary to the FPGA Board.

Programs Description

  01_hello_text        Serial port example
  01_tetris            ASCII based tetris game

After build you copy code_demo.mem16 to the Plus/design directory

You can run ./07_upload_soft_to_fpga.bash directly form source folder

Toolchain

Toolchain shoul be installed in: /opt/riscv_native

Minimal version of GCC should be 12.1.0

Serial port:

To use serial port switch on S1 jumper

Original serial port

https://github.com/fpga-logi/logi-pong-chu-examples/tree/master/pong-chu-logi-edu-examples-verilog

https://onlinelibrary.wiley.com/doi/epdf/10.1002/9780470374283.ch8

Related books:

"Inside An Open-Source Processor" ISBN 978-3-89576-443-1 Author, Monte Dalrymple

"Modern C." Manning, 2019, 9781617295812. ffhal-02383654 Jens Gustedt.

FPGA Prototyping by Verilog Examples Author(s):Pong P. Chu First published:11 June 2008

YRV directory Rust directory

Contains Rust code of riscv_rt crate

  $ mkdir .cargo && edit .cargo/config && cat $_
  [target.riscv32ic-unknown-none-elf]
  rustflags = [
    "-C", "link-arg=-Tlink.x"
  ]

  [build]
  target = "riscv32ic-unknown-none-elf"

You need to install cargo binutils

and

rustup targe add riscv32i-unknown-none-elf

to build run in app:

cargo objcopy --release -- -O binary app.bin

rustup toolchain install nightly rustup override set nightly

cargo build -Z build-std=core --target riscv32ic-unknown-none-elf.json --release

python bin2hex/freedom-bin2hex.py -w16 app.bin >code.mem16

rustc -Z unstable-options --target=riscv32imac-unknown-none-elf --print target-spec-json

riscv-none-elf-objcopy.exe -O binary ../target/riscv32ic-unknown-none-elf/release/app app.bin

To load in FPGA

load.bat