NucleusRV

A chisel based riscv 5-stage pipelined cpu design, implementing 32-bit version of the ISA (incomplete).

Dependencies

• verilator v4.016 recommended by Chisel. Tested on v4.210.
• riscv-gnu-toolchain To build the C program

Build Instructions

Building with SBT

Run this command is SBT shell

testOnly nucleusrv.components.TopTest -- -DwriteVcd=1 -DprogramFile=/path/to/instructions/hex

Running Compliance Tests

• Clone riscv-arch-test repo in nucleusrv root git clone git@github.com:riscv-non-isa/riscv-arch-test.git -b 1.0
• Build the simulation executable as defined in "Building with SBT" section
• Run ./run-compliance.sh in root directory

Building C Programs

• In tools/tests directory, create a folder and write c program in the main.c file

• Run make PROGRAM=<your_newly_created_test_folder_name> inside tools directory

• Build the program with sbt command listed above. Make sure you are in root directory

• Optionally, you can skip writing/building c program and directly write hex instructions to program.hex file in tools/out directory.