In computing, Aemulor is a emulator of the earlier 26-bit addressing-mode ARM microprocessors which runs on ARM processors under 32-bit addressing-mode versions of RISC OS. It was written by Adrian Lees and released in 2003. An enhanced version is available under the name Aemulor Pro.The software allows Raspberry Pi, Iyonix PC and A9home computers running RISC OS to make use of some software written for older hardware.