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Re: Iomega card

daemon@ATHENA.MIT.EDU (Brendan Miller)
Fri Feb 13 00:38:45 1998

Date: 	Thu, 12 Feb 1998 18:43:48 -0800
From: Brendan Miller <brmiller@wco.com>
To: "C.J. Oster" <cjo@pobox.com>
Cc: linux-scsi@vger.rutgers.edu
Reply-To: Brendan Miller <brmiller@wco.com>
In-Reply-To: <v01530500b108ad442636@[129.168.1.2]>; from C.J. Oster on Thu, Feb 12, 1998 at 08:47:01AM -0500

On Thu, Feb 12, 1998 at 08:47:01AM -0500, C.J. Oster wrote:
> I was wondering something.  If I make winblows 95 detect my aha1520b (which
> works very well under linux), it sees it as an Iomega Jazz Jet ISA card.
> Does that mean that I can put an Iomega Jazz card in and tell the kernel
> that it is an adaptec?  In short, are Iomega cards compatible with the
> adaptec driver?
> 

I think that is an overgeneralization.  It is true that most of the 
Iomega SCSI cards are based on an Adaptec chip of some kind.  Iomega's
SCSI cards fall into two categories--ISA and PCI--and typically went 
by the names "Zip Zoom" and "Jaz Jet", respectively.  (But I think they
have canned the Zip Zoom and now make an ISA "Jaz Jet.")

Anyway, most of the Iomega ISA cards I've seen are really aha1502
or other AIC6360-based cards.  Linux support for the 6260/6360 comes
via the 152x/151x/1505/282x driver.  If it's got a 6260 or 6360 chip
on it, Linux will most likely call it an "aha152x" card, since that
is the driver name.  But my Iomega Zip Zoom is called a 1502E.  Oh
well.  It works using the 152x driver.

The PCI cards come it two flavors: ones using an Advansys chipset (don't
know which one), the other use an Adaptec 294x (AIC78xx) chipset.  I would
expect the latter to work using the normal 78xx driver.

I think this answers your question in a round-about way.  Iomega has 
a history of utilizing Adaptec chipsets on their SCSI cards or just
relabeling Adaptec SCSI cards.  When they do this, they are compatible
with *some* Adaptec driver.  When they don't, they may be compatible
with some other vendor's driver.

Interesting: My Zip Zoom doesn't even have the Iomega name on it!  Just
"Adaptec 1502E" on the silkscreen.

Brendan Miller

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