| [SOC](https://git.libre-soc.org/?p=soc.git;a=tree) | [Libre-SOC](https://docs.libre-soc.org/soc/) | Main OpenPOWER Hybrid CPU-GPU |
| [FPU](https://git.libre-soc.org/?p=ieee754fpu.git;a=tree) | -- | Equivalent to hardfloat-3 |
| [nmutil](https://git.libre-soc.org/?p=nmutil.git;a=tree) | -- | Equivalent to Chisel3.util |
+| [OpenPOWER ISA](https://git.libre-soc.org/?p=nmutil.git;a=tree) | [OpenPOWER ISA](https://docs.libre-soc.org/openpower-isa/
+) | Simulator, ISA spec compiler, co-simulation infrastructure |
+
Also see [[SOC Architecture|3d_gpu/architecture]]