nios2-sim : Altera NiosII CPU simulator

Features

• NiosII CPU
  • Standard instruction set (without MMU/MPU)
  • Tightly-coupled instruction master ports
  • Tightly-coupled data master ports
  • Multiply instructions (mul, muli)
  • Custom instructions
  • Floating point by FPU2
  • Internal interrupts
• System emulation
  • ELF loading
  • Symbol loading
  • Qsys file import (.sopcinfo parsing)
  • Memory device support (On-chip memory and SDRAM controller)
  • Dummy module for unknown IP
  • Plugins for custom modules (nios2-sim-ip-*)
• Debugging
  • Simple CPU trace
  • JavaScript breakpoints (--break-js)
  • Replacing codes with empty function (--empty-func)

Usage

Usage: nios2-sim [options] <file>

Altera NiosII program simulator

Options:

  -h, --help                      output usage information
  -s, --sopcinfo <sopcinfo>       Specify .sopcinfo file
  --ignore-unknown                Ignore unknown components
  --cpu-trace                     Show CPU trace
  --no-plugin                     Disable plugins
  --break-js <addr>               Set JS breakpoint
  --empty-func <addr>[:<result>]  Empty function
  -v, --verbose                   Increase verbosity

TODO

• mulx* instructions
• Load initialization for memory devices
• Exceptions
• div* instructions
• Shadow registers
• Cache handling
• MMU/MPU support

License

MIT