Aemulor
title: "Aemulor" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["risc-os-emulators", "risc-os-emulation-software", "proprietary-software"] topic_path: "general/risc-os-emulators" source: "https://en.wikipedia.org/wiki/Aemulor" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::data[format=table title="Infobox software"]
| Field | Value |
|---|---|
| name | Aemulor |
| logo | Aemulor logo.png |
| logo_alt | A logo consisting of turquoise text reading ARM above larger blue text reading Aemulator. A stylized picture of a blue square circuit board is behind the text |
| author | Adrian Lees |
| released | |
| latest release version | 2.51 |
| latest release date | |
| latest preview date | |
| operating system | RISC OS |
| genre | Emulator |
| license | Proprietary commercial software |
| :: |
| name = Aemulor | title = | logo = Aemulor logo.png | logo_alt= A logo consisting of turquoise text reading ARM above larger blue text reading Aemulator. A stylized picture of a blue square circuit board is behind the text | screenshot = | caption = | collapsible = | author = Adrian Lees | developer = | released = | discontinued = | latest release version = 2.51 | latest release date = | latest preview version = | latest preview date = | programming language = | operating system = RISC OS | platform = | size = | language = | status = | genre = Emulator | license = Proprietary commercial software | website = In computing, Aemulor is an emulator of the earlier 26-bit addressing-mode ARM microprocessors. It 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. , compatibility with the BeagleBoard single-board computer was under development.
Development
The software's existence was first reported around the time of the announcement of the Iyonix in October 2002. A demo version was released in February 2003, with the commercial release in March of that year.
Aemulor Pro was released in 2004. This added enhancements, including support for low colour modes, required by scorewriter Sibelius and many games. A version for the A9home was released in 2005. The software was exhibited at the 2006 Wakefield Show.
In 2009, author Adrian Lees posted on The Icon Bar, showing an early prototype of the software running on the BeagleBoard. Progress on further compatibility for the Raspberry Pi single-board computer was announced by Lees on the RISC OS Open forum in 2012. Developer R-Comp was reported in May 2012 to be hoping to make Aemulor available for its BeagleBoard-xM-based ARMini computer.
{{Anchor|Pro}}Features
::figure[src="https://upload.wikimedia.org/wikipedia/commons/0/06/Sibelius_on_Iyonix_under_Aemulor.png" caption="Sibelius running on the Iyonix" alt="An application window showing music notation software. Musical staves are in the center of the screen, toolbox windows are above, below, and to the left."] ::
The software provides full 26-bit emulation for applications written in C and ARM assembly language. It employs an XScale-optimised ARM code interpreter, supports SWI emulation from RISC OS 4 to 5, flag preservation and creation of dynamic areas in low memory. Support for running A310Emu is included, allowing users to further emulate earlier versions of the OS, going back to Arthur. , due to the memory remapping employed, native 32-bit applications are restricted to a maximum size of 28Mb while Aemulor is running.
The original release included an Easter egg, with a prize of an upgrade to the Pro version for the person who found it.
Aemulor Pro adds support for low-bpp screen modes, sound, hardware emulation of VIDC/IOC, an altered memory map and 26-bit filing systems. Some software, such as Sibelius, can be run both in the desktop and in full screen.
Compatible software
::data[format=table]
| Title | Purpose | Vendor/publisher |
|---|---|---|
| last=Williams | first=Chris | title=Aemulor: Number of apps working on Iyonix 'growing daily' |
| Impression | desktop publishing | Computer Concepts |
| PipeDream 3 | spreadsheet | Colton Software |
| Sibelius | scorewriter | Sibelius Software |
| last=Brett | first=Paul | title=Games World |
| StrongED | text editor | |
| Zap | text editor | |
| :: |
References
References
- "Aemulor - 26bit emulator for Raspberry Pi 'PreOrders - Raspberry Pi Forums".
- Williams, Chris. (20 October 2002). "Iyonix 26 bit emulator in development". [[Drobe]].
- "32-bit introduction". [[Castle Technology]].
- Williams, Chris. (22 February 2003). "South West show news". [[Drobe]].
- Williams, Chris. (9 March 2003). "South West show news". [[Drobe]].
- Williams, Chris. (25 March 2003). "Aemulor sees the light of day". [[Drobe]].
- Hoare, John. (25 March 2003). "Aemulor Released". [[Acorn Arcade]].
- Peachey, John. (June 2003). "Aemulor in Use". [[Archive (magazine).
- Mellor, Phil. (6 May 2004). "Aemulor Pro is out now". [[Acorn Arcade]].
- Lee, Jeffrey. (22 April 2004). "Aemulor Pro-gress". [[Acorn Arcade]].
- Williams, Chris. (5 November 2005). "Aemulor for the A9home released". [[Drobe]].
- "Wakefield 2006". [[RISC World]].
- Lees, Adrian. "The homepage of Adrian Lees". Adrian Lees.
- Naulls, Peter. (20 December 2009). "Aemulor on BeagleBoard". riscos.info.
- Lees, Adrian. (20 December 2009). "Aemulor BeagleBoard". [[The Icon Bar]].
- Lees, Adrian. (20 June 2012). "Aemulor on the Beagle/Panda boards". [[RISC OS Open]].
- Proven, Liam. (10 May 2012}}{{Dead link). "Best and the Rest: ARM Mini PCs". [[Reg Hardware]].
- "Aemulor Professional". Spellings Computer Services.
- Williams, Chris. (19 April 2003). "Aemulor turns to RISC OS 2". [[Drobe]].
- "Inside Aemulor". [[Foundation RISC User]].
- Williams, Chris. (5 August 2003). "Aemulor 2.2 upgrade online". [[Drobe]].
- Williams, Chris. (19 December 2003). "Aemulor's brief Windows affair discovered". [[Drobe]].
- Williams, Chris. (19 November 2002). "Aemulor: Number of apps working on Iyonix 'growing daily'". [[Drobe]].
- "PipeDream 3". Colton Software.
- Williams, Chris. (12 March 2004). "Aemulor Pro embraces Sibelius". [[Drobe]].
- Brett, Paul. "Games World". [[RISC World]].
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