[Coco] Re: Coco Digest, Vol 31, Issue 23

[Gene Heskett]

On Monday 06 March 2006 17:08, Tony C wrote:
>Date: Mon, 06 Mar 2006 13:28:26 -0800
>From: Kevin Diggs <kevdig at hypersurf.com>
>Subject: Re: [Coco] RE: Tandy Hard Disk Controller
>To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>Message-ID: <440CA97A.2050403 at hypersurf.com>
>Content-Type: text/plain; charset=UTF-8; format=flowed
>
>       >>Huh? I thought by definition in the SCSI spec everything had
>       >> to
>
>have a
>
>>>SCSI id? Is there a short cut that I am not aware of?
>
>You are correct. Every device needs a unique SCSI ID, but on many of
> the very old (someone mentioned an old Adaptec SCSI interface
> recently), the address of the host was hard wired to 7, with no easy
> way of changing it other than cutting traces/soldering. This gives
> the false impression that there is no ID fo rthat adapter, since it
> is not user settable.

I have an advansys laying here whose support was removed from the linux 
kernel, that does have, in its own bios screens, the ability to change 
its own host address.  It was a good controller AFAIK, but the code had 
been thru several hands, like the company before it seems to have 
disappeared forever, and was 'racy' (never bit me though that I knew 
of).  Since I was virtually the only one using that card, it came out 
of the kernel eventually.  At least no one else squawked about it but 
me on the lkml.

>    Mark Marlette wrote:
>    > In all of my years of working with SCSI on the CoCo. I have
>    > NEVER seen
>
>a
>
>    > CoCo host adapter have a SCSI ID.
>    >
>    > For many reasons, it is not this simple.

-- 
Cheers, Gene
People having trouble with vz bouncing email to me should add the word
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Copyright 2006 by Maurice Eugene Heskett, all rights reserved.