riscvsim_py

an riscv rv32i simulator in python inspired from https://github.com/johnwinans/rvddt

1. Pre requisites

   1. Install python3.
   2. Install Python Prompt Toolkit 3.0 : pip3 install prompt_toolkit.
   3. Install python readchar: pip3 install readchar
   4. Install RISC V crosscompiler and set its bin directory in the PATH env variable.

2. get the simulator

   1. git clone git@github.com:varunmadhavam/riscvsim_py.git

3. Run tests

   1. cd riscvsim_py
   2. make test

4. Run helloworld

   1. cd riscvsim_py
   2. make

5. Run your own C program

   1. Add the new source code and headers to sw/app/main_app src and include respectively
   2. Edit the Makefile in sw/app/main_app and append the new sources to FIRMWARE_OBJS as object files
   3. make

6. Help

   1. Within the simulator enter h|help to get the help menu.

7. References

   1. https://github.com/johnwinans/rvalp
   2. https://github.com/YosysHQ/picorv32
   3. https://github.com/openhwgroup/cv32e40p/blob/master/example_tb/core/custom/syscalls.c