RE: SCSI bus activity LED?

 
Just to follow up...  Regarding SCSI bus monitoring, I found pretty much exactly what I wanted:
http://www.granitedigital.com/optionalremoteledpak.aspx
(plus a compatible terminator)
 
I also got a price on the Bridgeworks SE1100 SCSI/iSCSI bridge...  It's quite expensive and I won't be getting one unless it pops up on eBay at some point.  All the similar bridges I've found are just rebranded versions of the Bridgeworks product.
 
More interesting, I found a guy selling a "SCSI emulator" product:
http://www.virtualscsi.com/
 
It includes a PCI board that acts as a SCSI target and custom Windows-based software that will emulate various devices, including disks.  The engineer behind this actually has a pretty impressive resume w.r.t. SCSI technologies.  I'm trying to convince him to just build a standalone SCSI/iSCSI bridge, and in fact he seems to be 90% of the way there with what he already has.
 
FWIW, "linked commands" are supported with the VirtualSCSI product.  So far, with the devices I've tested, I've only seen support for linked commands on an old Seagate drive.  (To be fair, I have no idea if this has a real-world impact on performance for the Atari.)
 
David Ross
[email protected]


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> Date: Tue, 23 Mar 2010 09:30:24 +0100
> From: [email protected]
> To: [email protected]
> CC: [email protected]; [email protected]
> Subject: Re: SCSI bus activity LED?
>
> David Ross wrote:
>>
>> Yeah, I noticed that after I posted. Here's one that works the other way around:
>> http://www.rancho.com/Products.aspx?ID=116
>> (Though who knows how much this thing costs. Maybe best to revisit this topic in a few years.)
>>
>> I'd prefer not to run an extra cable back into the Atari case, but I guess it's an option.
>>
> You could attach a buffer driving a LED directly to the SCSI BUS inside
> the TT - IIRC, the Select signal can be used to signal activity, but I
> would have to read the SPI standard again to be sure.
>
> cu
> Michael
>