[Rpcemu] Risc OS 6.20

Tony Moore old_coaster at yahoo.co.uk
Sun Jan 6 07:44:12 PST 2013


On 5 Jan 2013, Gerald Holdsworth <gerald at hollypops.co.uk> wrote:
> On 5 Jan 2013, at 18:25, Peter Howkins wrote:
> > On Fri, Jan 04, 2013 at 08:56:15PM +0000, Gerald Holdsworth wrote:

> > > Has anyone managed to get Risc OS 6.20 running on RPCemu 0.8.9?
> >
> > No, no one has yet.
> >
> > http://www.marutan.net/rpcemu/manual/romimage.html
> >
> > Peter
>
> Cheers for the link - didn't realise that they were compressed.
> Following the Linux instructions I decompressed the files to get a
> single 6MB file, which I put into the roms folder, and hey presto, it
> booted into RISC OS 6.20.

That's very interesting. Which boot sequence did you use? Clearly the
6.20 boot can't work, because that softloads over 4.39 in ROM.

Using RISC OS, the rom-images can be de-compressed as described in
http://compgroups.net/comp.sys.acorn.apps/converting-compressed-riscos-rom-images-t/1232757
This produces a 6MB rom-image, identical to that produced by *save
620rom 3800000 3e00000 , as described in the marutan link, above.

When I try to use 620rom in RPCEmu 0.8.9, on a Windows host, I see
Error: DataAbort: Abort on data transfer at &0380BE64 (Error number
&80000002) on a black screen (after the coloured screens) prior to
entering the wimp.

Would anyone know of a way around the problem?

Tony






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