Compared to Linux on low-end modern ARM hardware, RISC
OS looks pretty
amazing. OK, so, no true memory protection, no multiuser support, no
pre-emptive multitasking (although there is a patch for this out
there, but it breaks a lot of compatibility), no virtual memory, etc.,
but it's fast as hell and does a surprisingly large amount of all you
might want.
Sounds like AmigaDOS minus (working) pre-emptive multitasking. I say
this not to start a flame war (really), but because it sounds like the
closest point of reference amongst the machines I know well.
Dunno. I think it sounds more like classic MacOS minus virtual memory.
Either way, I'm actually picking up an Atrix dock to try this. I have an
Rpi doing nothing and I think cobbling together a RISC OS laptop is an
excellent use of my time. :)))