[iyonix-support] Re: Acorn Scsi on the Iyonix?

In message <4afdb1984e.druck@xxxxxxxxxxxxxxxx>
          "David J. Ruck" <druck@xxxxxxxxxxxx> wrote:

> On 25 Nov 2006 Ron <iyonix@xxxxxxxxxxx> wrote:
> > In message <1c26f98a4e.druck@xxxxxxxxxxxxxxxx>
> >           "David J. Ruck" <druck@xxxxxxxxxxxx> wrote:
> >> On 24 Nov 2006 Ron <iyonix@xxxxxxxxxxx> wrote:
> >> 
> >> [Iyonix podule backplane]
> >> 
> >>> Is it different electrically though? 
> >> 
> >> Its different physically, the motherboard end is an edge connector.
> >> 
> > I think they all use edge connector, from RiscPC/A7000 on, anyway
> 
> You are correct, I was thinking of the original Archiemdes backplane which
> had a decent connector. The Iyonix backpane is a different shape to that in a
> RPC in order to put the podule connectors in the correct place for the
> classic case and avoiding the PCI slots. I don't know if the motherboard
> connector is a diffent pin out, and if an RPC backplane would work if there
> weren't physical conflicts with the PCI cards.
>
Seems to be working OK, see the "Acorn Scsi progress" thread I posted
6th Dec.
In my admittedly large case, There would be room to mount podules to the
front as well as the rear, should someone make such a backplane.

[snip assembler queries]
> [Apologies for a delayed reply, only just found in my deferred mail folder]
> 
> Cheers
> ---Dave
> 
As you can now see?, someone (presumably at Castle) has put up a more
complete SCSISoftWD33C93 source and the finished module. The module
installs but only goes so far at detecting devices.
My debugging is limited to what I can see happening in SWIStat at the
moment. I have tried poking a few SCSI SWI's at it but they
haven't behaved like they claim they should,for me anyway.
I dont think my old Acorn Assembler debugger will run on the Iyonix, but
I have found an old one written by Martin Avison to have a look at
sometime. I don't know enough about assembler yet, but noticed the
address's in the Equates section of the source are adjacent to the 'old'
podule address's. The Iyonix podules address's are now $F9FC8000 -
$F9FC000 The other problem is wether my Acorn era Assembler would work
with the supplied or modified source.
Thanks for any pointers.  -Ron
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