What RISC OS versions are there?
Peter Howkins provides a database of RISC OS versions, components and modules which lists major versions. However, the main versions you will see in use with current machines are: • RISC OS 3.5, 3.6, 3.7: RiscPC, A7000(+). StrongARM RiscPCs require at least RISC OS 3.7. 1994-98 • RISC OS 4, RISC OS Adjust/Select: RiscPCs, A7000(+), MicroDigital Omega, MicroDigital Mico, VirtualAcorn VirtualRPC, RiscStation R7500+ (Lite). 1999-present • RISC OS Adjust 32-bit: Advantage Six A9home: 2004-present • RISC OS 5: Castle Technology IYONIX pc. 2002-present • RISC OS 6: RISC OS Select: RiscPCs, A7000(+), VirtualAcorn VirtualRPC. 1999-present 3.7x variants exist, especially for ARM7500-based machines, as do point versions of other versions – in particular, RISC OS 5.13 is the latest version for the IYONIX pc, and Adjust is also known as RISC OS 4.39. All versions for the RiscPC apart from Select, come in a two chip ROM package. RISC OS Select is softload. For the IYONIX pc and some of the other ma
