RHMRM
RISCy Handmaid Multistack Register Machine
RHMRM is a specification of pure 16bit processor with 32 general registers, 65536 little-endian words of memory and no explicit stack. It was designed under the impression of Notch's DCPU-16, though greatly differs from it in many respects.
Specification
See spec.txt.
License
Spec and code is available under the terms of zlib/libpng license. See COPYING for more information.