- __LPC Peripheral__ : This is an LPC peripheral that implements LPC IO and FW cycles so that it can boot a host like a POWER9. This peripheral would typically sit inside a BMC SoC.
- __A2O Core__ : The A2O core was a follow-on to A2I, written in Verilog, and supported a lower thread count than A2I, but higher performance per thread, using out-of-order execution (register renaming, reservation stations, completion buffer) and a store queue
https://git.openpower.foundation/cores/a2o
- __A2I Core__ : The A2I core was used as the general purpose processor for BlueGene/Q, the successor to BlueGene/L and BlueGene/P supercomputers
