Running RISCOS on QEMU

slp published on 2013-12-09 included in Other

UPDATE (17/09/14): Some time after writing this, I’ve replaced the QEMU repository referenced here with a clean one without the changes needed for running RISCOS. I’ve just created another repository with the proper sources: https://github.com/slp/qemu-riscos.

Some time ago, while trying to get NetBSD to run on Efika MX Smartbook (I should write about that), I’ve decided that I would never do any serious OS development on a platform without a JTAG interface, or a working emulator. Being able to stop the execution at will, for looking at the CPU registers, or examining an arbitrary memory location, will save you a lot of hours otherwise invested in a painful trial and error cycle.