Snippets – 31st December, 2019

With 2019 drawing to a close at the end of today, to be immediately followed by a year with the official designation of 2020, it’s time to round up a selection of news that hasn’t been covered on RISCOSitory over the course of the year.

Read More

High vector builds of Aemulor now available

A couple of years ago, RISC OS Open Ltd started building versions of RISC OS with “zero page relocation” – with the memory map changed such that the kernel’s workspace that started at the bottom of the addressable memory was moved to a higher location. This was an important step for security and stability, and for the future of the operating system. However, it wasn’t ever going to happen without some casualties along the way; software that in some way tried to use or access certain information held in that…

Read More

Aemulor arrives on BeagleBoard and PandaBoard

Make your 32-bit computer do an Impression (ho-ho) of a 26-bit one! When Castle Technology Ltd launched the IYONIX pc, back in 2002, there was a significant question users needed an answer to before upgrading to the new computer: Would their old software run on the new hardware? The problem was that for all the previous RISC OS computers, the ARM CPUs worked in (or supported in the case of StrongARM) an addressing mode we refer to as ’26-bit’, in which the program counter and processor status flags are contained…

Read More