Editing Acorn Archimedes A540 (section)

== Operating System ==

The A540 was launched with RISC OS 2.01, which included bug fixes and improvements over the earlier 2.00 release. The ROM-based operating system provided:
* ARM3 processor support with cache control
* Native SCSI device handling through the SCSI manager
* Support for memory configurations beyond 4 MB
* Improved printer driver stability and font manager fixes

Many A540s were later upgraded to RISC OS 3.10 or 3.11, with the Acorn Universal Boot system being a popular addition for enhanced functionality. Some machines, particularly ex-Acorn examples, retained RISC OS 2.01 with specialized software such as SJResearch Nexus Level 4 fileserver software for Econet networks.