On 23 Oct, Alexander Ausserstorfer wrote in message
<
5a3bef6c8eb...@chiemgau-net.de>:
OK, that should be fine.
> > From the Switcher and Display Manager icons that's RISC OS 4, so it's
> > either a well-themed RISC OS 5 box or a RiscPC.
>
> I don't know. The machine looks like it was.
Apologies; the Acorn logo looked old, and in that context I got confused
about the vintage of the Display Manager icon (which isn't as old as I'd
thought).
> The version window says 5.24 (16-Apr-18). Is my machine too old? I don't
> like to buy a new one.
That ought to be OK, although you can update the OS when new releases come
out. Elesar won't tell you, as they're fully on board with ensuring that
ROOL updates work on their system. They just assume that you will download
updates from ROOL and do it yourself. As Chris says, we're on 5.28 now, with
5.30 likely looming in the near future.
Personally, I softload for a while on the Titanium (there's a softload tool
in the nightly ROM archives which also works with the stable releases), then
update the flash when I'm happy and have some spare time in order to do it
safely.
> > If the latter, then I very much doubt* that it has a processor which
> > supports Thumb or the other more modern instructions which I'd imagine
> > are being used by the compiler when building Iris. Javascript, in
> > particular, relies on Thumb (as it's a port of an engine which can run
> > on ARM-based phones), so that would make Google's page at best
> > unpredictable in Iris on hardware which doesn't support Thumb.
>
> I don't know what "Thumb" is.
A new instruction set in recent ARM processors (v5 onwards, IIRC) which has
some 16-bit wide opcodes and is aimed at low-power phone stuff. My
recollection from stuff that's been said is that Iris with Javascript uses
some of this functionality, probably because lightweight JS implementations
are more likely to be phone-oriented.
Either way, as that error box says, you need Alignment Exceptions to be
*off* when running Iris, otherwise unexpected things will happen. Unlike all
other RISC OS software, it is using new instruction codes from the new
processors which trigger these exceptions (this is the main reason why I'm
not using Iris; I use other platforms for the web, and given that, the loss
from turning the exceptions off isn't worth it for me).
That error box says that you have Alignment Execptions on, which *will* be
causing problems for Iris. I'd suggest turning them off and seeing if things
improve.
> It seems that the !Iris window has problems with the keyboard here. I
> click several times in the window but no cursor appears. And often it
> crashes means it is disappearing from the running system without saying
> anything.
It definitely works fine on a Titanium, or at least it used to: I've run
older versions here to help ROD with testing things.