Technical roadmap

Overview

Currently, the Nutshell project supports three instance types, namely in-order core, out-of-order core and 32-bit embedded core. Their features are shown in this table:

Feature	in-order core	out-of-order core	embedded core
RV64IMAC	√	√
RV32IM			√
Synthesizable/FPGA	√	√	√
Caches	L1&L2	L1&L2
Virtual Memory	√	√
Boots Linux	√	√
Boots Debian/Fedora	√
Maintenance plan	√		√

* out-of-order core will not be maintained recently as a new high-performance OOO core is under development.

Wish List for NutShell

Feature	Status
IEEE-754 compatible FPU support	Finished (ready to test on FPGA)
RoCC-like instruction extension interface
Low power design
Frontend module/signal integration	WIP
Memory bus migration to TileLink
Multi-core support