RISC OS was designed to run o 1st-gen. ARM CPU's, but..

To gain speed advantages on a 4 MIPS CPU they had to use Assembler, tweaking each bit. But by that they also locked the OS out from future features in extant ARM CPU’s. And let’s get honest, the last crop of Arm Ltd’s GPU’s don’t even laugh at VIDC. Add to that at Arm’s latest CPU revision has 0 support for 32-bit command sets and think – can Assembler be easily be converted into modern C, and can it be automatically converted? Just a thought.

Wibble