RISC OS 5 Overview
RISC OS 5 is the latest version
of the fast and robust Operating System designed for ARM processors. Unlike
earlier versions of RISC OS it runs entirely in the ARM's 32-bit mode
making it suitable for the latest ARM processors such as Intel XScale,
ARM9 and ARM10 based devices.
In addition, RISC OS 5 introduces support for PCI
expansion cards, USB devices, UCS (Unicode)
fonts, graphics acceleration, dual serial ports and high speed expansion
podules. It also implements a Hardware
Abstraction Layer to enable it to be easily ported to new hardware
without making any changes to the RISC OS kernel.
RISC OS 5 was developed to support and take advantage of the new IYONIX
pc - it will not be available for older machines.
On the IYONIX pc RISC OS 5 is installed in a 4MByte Flash ROM device
which can easily be updated using software updates available over the
Internet. The ROM image is copied to fast DDR RAM at boot time to increase
the performance, but the computer can still be used without a hard disc.
The pages in the RISC OS 5 section of this site describe some of the
new RISC OS 5 features in detail.
|© 2006 IYONIX Ltd
||32-bit RISC OS|