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Looking for a Cumana SCSI II card

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Chris Manning

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Feb 19, 2006, 4:50:48 AM2/19/06
to
My Cumana SCSI II card has died. *Podules tells me

Expansion card 0: Extended type &0000

whereas !SCSIFlash, if I tell it in which slot the card's to be found,
complains either

Unknown or Faulty Flash EPROM - (0000)

or

Not enough space in flash EPROM

depending on which version of the application I run. Inasmuch as pointing
SCSIFlash at an empty slot causes the system to freeze I assume that it
can see the card, even though it fails to do anything useful with it.


I presume this card's dead, so if anyone has one for sale, or even one that
could be lent to me for a week or so in order that I could retrieve some
files (originals on one SCSI disc, backups on the other!) I'd be delighted
to hear from you.

Chris

druck

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Feb 19, 2006, 4:00:14 PM2/19/06
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On 19 Feb 2006 Chris Manning <chr...@spuddy.mew.co.uk> wrote:

> My Cumana SCSI II card has died. *Podules tells me

[snip]


> I presume this card's dead,

Have you tried stripping down all the podules, removing the backplane and
putting it all back together again? Also remove and reinsert any NIC network
card as thats also on the podule bus.

---druck

--
The ARM Club Free Software - http://www.armclub.org.uk/free/
The 32bit Conversions Page - http://www.quantumsoft.co.uk/druck/

Andrew Wickham

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Feb 20, 2006, 11:07:25 AM2/20/06
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druck wrote:
> On 19 Feb 2006 Chris Manning <chr...@spuddy.mew.co.uk> wrote:
>
> > My Cumana SCSI II card has died. *Podules tells me
>
> [snip]
>
> > I presume this card's dead,
>
> Have you tried stripping down all the podules, removing the backplane and
> putting it all back together again? Also remove and reinsert any NIC network
> card as thats also on the podule bus.
>
I've had a card showing similar errors which persisted on trying with a
minimal set-up. The same card had been intermittent for a while (which
I'd put down to backplane timing on an ARM3'd A310 and the like), but
gave up completely after an attempted re-flash. IIRC (this was a few
months ago), it would prevent booting, unless I changed jumpers 7 and 8
to "turn off" the ROM - but I found I couldn't soft-load the modules so
had a useless card. Whether that is due to the fault or to the nature
of the modules I don't know. I had a spare card, so did not pursue it.

Rgds,
Andrew

Alan P Dawes

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Feb 22, 2006, 6:37:52 AM2/22/06
to
> On 19 Feb 2006 Chris Manning <chr...@spuddy.mew.co.uk> wrote:

> > My Cumana SCSI II card has died. *Podules tells me

> [snip]
>
> > I presume this card's dead,

Several years ago Reflex/itc-uk repaired my Cumana SCSI II card (along
with my RiscPC motherboard). I think they are still contactable via
CJE/4D. See http://www.itc-uk.co.uk/index.php

Alan

--
--. --. --. --. : : --- --- ----------------------------
|_| |_| | _ | | | | |_ | alan....@argonet.co.uk
| | |\ | | | | |\| | | alan....@riscos.org
| | | \ |_| |_| | | |__ | Using an Acorn RiscPC

Paul Vigay

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Feb 22, 2006, 11:40:06 AM2/22/06
to
Chris Manning wrote:
> I presume this card's dead, so if anyone has one for sale, or even one that
> could be lent to me for a week or so in order that I could retrieve some
> files (originals on one SCSI disc, backups on the other!) I'd be delighted
> to hear from you.

If no one has offered you one yet, drop me a private email, as I'm sure
I have some of those Cumana cards in a box somewhere in my loft. I'm in
the office at the moment so can't check immediately.

Paul

Chris Evans

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Feb 22, 2006, 12:47:05 PM2/22/06
to
In article <4dfd275b9f...@argonet.co.uk>, Alan P Dawes

<URL:mailto:alan....@argonet.co.uk> wrote:
> > On 19 Feb 2006 Chris Manning <chr...@spuddy.mew.co.uk> wrote:
>
> > > My Cumana SCSI II card has died. *Podules tells me
>
> > [snip]
> >
> > > I presume this card's dead,
>
> Several years ago Reflex/itc-uk repaired my Cumana SCSI II card (along
> with my RiscPC motherboard). I think they are still contactable via
> CJE/4D. See http://www.itc-uk.co.uk/index.php

Thanks for the plug.

I would expect to be able to sell a second hand unit for less than a repair
cost!

Chris Evans

--
CJE Micro's / 4D 'RISC OS Specialists'
Telephone: 01903 523222 Fax: 01903 523679
ch...@cjemicros.co.uk http://www.cjemicros.co.uk/
78 Brighton Road, Worthing, West Sussex, BN11 2EN
The most beautiful thing anyone can wear, is a smile!

Chris Manning

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Feb 25, 2006, 7:58:20 AM2/25/06
to
In message <1140451645....@g14g2000cwa.googlegroups.com>
Andrew Wickham <ajw...@yahoo.co.uk> wrote:

> I've had a card showing similar errors which persisted on trying with a
> minimal set-up.

[snip]

> it would prevent booting, unless I changed jumpers 7 and 8 to "turn off"
> the ROM

I've never seen any documentation on those jumpers. As viewed from the
rear of the machine mine are

J4 ._. .

J5 . ._.

J6 . ._.

J7 ._. .

J8 . ._.

Just in case I can resurrect the card, I'd be interested in knowing what
they do.

Chris

Chris Manning

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Feb 25, 2006, 7:44:52 AM2/25/06
to
In message <fa7ecffb...@druck.freeuk.net>
druck <ne...@druck.freeuk.com> wrote:

>> I presume this card's dead,

> Have you tried stripping down all the podules,

All? The Cumana's the only one. ;-)


> removing the backplane and putting it all back together again?

I was there when Acorn demonstrated how quickly the RPC could be stripped
down, and upgraded; how far from the reality of having to remove earthing
straps secured by nuts and screws which are totally inaccessible. :-(


> Also remove and reinsert any NIC network card as thats also on the podule
> bus.

Haven't got one of those.


ATM I have a loaned Castle card, and all's working well, although I've
yet to try it with my external Jaz or SCSI/parallel scanner. I'm struck
by how crowded the Cumana card is, and how empty the Castle; maybe that
explains why Cumana gave me endless problems, and only worked satisfactorily
with all of its "go faster" features turned off.


Now that things are more-or-less back to normal I've had a close look
at the Cumana card, and, next to the rear panel, alongside the external
connector, there's a component F1, which seems to bear the legend "1璀".
A fuse? Maplin seem not to stock such PCB-mounted fuses, or 1.5A fuses
of any kind, but this one's certainly open circuit.

Chris

Jules

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Feb 26, 2006, 8:10:41 AM2/26/06
to
On Sat, 25 Feb 2006 12:44:52 +0000, Chris Manning wrote:

> In message <fa7ecffb...@druck.freeuk.net>
> druck <ne...@druck.freeuk.com> wrote:
>
>>> I presume this card's dead,
>
>> Have you tried stripping down all the podules,
>
> All? The Cumana's the only one. ;-)

Given the error messages, Flash ROMS do go bad from time to time - if it's
a separate chip then a replacement might fix things, assuming you have
the software to reprogram it...

> Now that things are more-or-less back to normal I've had a close look at
> the Cumana card, and, next to the rear panel, alongside the external
> connector, there's a component F1, which seems to bear the legend

> "1½A". A fuse? Maplin seem not to stock such PCB-mounted fuses, or


> 1.5A fuses of any kind, but this one's certainly open circuit.

Hmm, possibly on the TERMPWR line. Old PC motherboards usually have such
fuses in the keyboard circuitry, and hard disks tend to have a couple.
Maybe you can find a donor of the right rating amongst some scrap.

If TERMPWR's failed then it'd likely explain why the controller screws up
when any performance features are turned on...

cheers

Jules


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