Documentation, HDL code and build tools are available at: github.com/mrisc32.

The following blog posts give some information regarding the architectural features of the MRISC32 ISA:

• The MRISC32 – A vector first CPU design
• Some features of the MRISC32 ISA
• MRISC32 conditional moves
• Ideas for MRISC32 vector operations

There is currently an MRISC32 port of the GNU toolchain (including GCC, GNU binutils and newlib): mrisc32/mrisc32-gnu-toolchain. It provides:

• C and C++ compilers, with standard libraries
• An assembler
• A linker
• Various elf32 tools (e.g. objdump)