[Coco] RE: Tandy Hard Disk Controller

[Gene Heskett]

On Monday 06 March 2006 09:46, 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.
>
Huh?  Should it not be address 7 on the old narrow buss?  How else could 
the drive notify it when the data is ready if a disconnect has been 
done?  Not that the disconnect has ever been used in the coco's 
versions.  It would seem rather pointless since the drive is waiting on 
the coco, not the other way around.

>Quoting Mike Pepe <lamune at doki-doki.net>:
>> L. Curtis Boyle wrote:
>>>    I do know that Ken (of Kenton) had demoed an RS-DOS system at
>>> Rainbowfest that did have 2 Coco 2's hooked up to one SCSI hard
>>> drive... but I don't remember any of the details. I would presume
>>> it would "just" be a driver issue.
>>
>> It's not a big deal. The drivers are very simple and shouldn't care.
>> Really there are only a few things to worry about:
>>
>> 1- you need to be able to set each CoCo host adapter to use a
>> different SCSI ID.
>>
>> 2- you need to maintain proper bus termination.
>>
>> and
>>
>> 3- you best not write to the same file(s) at the same time. Multiple
>> reads should be just fine.
>>
>> Note that you can (technically) also wire up and share floppies in a
>> similar manner.
>>
>>
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> http://five.pairlist.net/mailman/listinfo/coco

-- 
Cheers, Gene
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