The Milkymist SoC is at the core of our devices. It is a 100% open source system-on-chip (SoC) design written in Verilog HDL. Featuring the LatticeMico32 processor core, it is capable of executing complex, fully-fledged software (including nommu Linux) and comes with an extensive set of custom-built peripherals and graphics accelerators. Read this report for the details about the architecture.
Documentation
General documentation
Technical overview paper (PDF) (Recommended reading)
Master's thesis report (PDF) (Recommended reading)
Slides (PDF)
BIOS reference manual (PDF)
CSR bus specifications (PDF)
FastMemoryLink specifications (PDF)
IP core documentation
LatticeMico32 Processor Reference Manual (PDF)
Simple UART (PDF)
System controller (PDF)
High Performance Dynamic Memory Controller (PDF)
VGA framebuffer (PDF)
AC'97 controller (PDF)
Programmable Floating Point Unit (PDF)
Texture Mapping Unit revision 2 (PDF)
DMX512 cores (PDF)
RC5 decoder (PDF)
BT656 capture core (PDF)
Memory card controller (PDF)
Soft USB core (PDF)
Misc
Technical conference slides (overview) (PDF)
Browse all official documentation (including chip datasheets, small IP cores documentation, and work in progress)
Source distribution
The SoC source distribution includes software libraries, the BIOS and the demonstration firmware, as well as test benches, LaTeX source for the documentation, build scripts, etc. Most of it is covered by the GNU GPL license version 3, see the README file for details.
Git access
The repository is hosted by GitHub and is available here.
Third-party tools
LM32 toolchain - see RTEMS. Use the RTEMS 4.11 toolchain.
GPL Cver 2.12a (TAR.GZ) (Sources)
Verilator 3.702 (TAR.GZ) (Sources)
Icarus Verilog 0.9.1 (TAR.GZ) (Sources)