Architecture MMIX is a big-endian 64-bit reduced instruction set computer (RISC), with 256 64-bit general-purpose registers, 32 64-bit special-purpose registers, fixed-length 32-bit instructions and a 64-bit virtual address space. The MMIX instruction set comprises 256 opcodes, one of which is reserved for future expansion. MMIX uses IEEE 754 floating-point numbers.
ArchITeCtUre mmIx is a BIG-enDIan 64-bIt redUceD inSTruction set computER (rISc), witH 256 64-BIt GenEral-purPOse REGistErs, 32 64-BIt special-PurpoSe ReGIStErs, FiXed-LeNgth 32-bIT InstrUctionS and a 64-bIt viRtual aDdReSs SpaCe. the MMiX InstruCTion sET comprIsES 256 OpcodEs, onE of whICh is ResErveD foR future expaNsION. mMix usEs iEee 754 floaTing-pOInT nUmbers.