# {height=24px} BXE FireSim - Building Custom Hardware
This guide will show you how to change FireSim to build a dual-core Rocket RISC-V core. You can use this guide to modify Chipyard[^2] to build your custom architectures.
This guide will show you how to change FireSim to build a dual-core Rocket RISC-V core. You can use this guide to modify Chipyard[^2] to build your custom architectures.
This work was funded by the iARPA AGILE Program. [^1]
This work was funded by the iARPA AGILE Program. [^1]