[Coco] CoCo Hard Drive History

[tonym]

>---- Original Message ----
>From: "Greg Law" <glaw at live.com>
>Sent: 10/13/2013 1:59:03 AM
>To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
>Subject: Re: [Coco] CoCo Hard Drive History
>
>From: tonym
>
>> Are these WD SASI-to-MFM boards similar to the controller boards used in 
>> the Kaypro 10?
>> Or is that a different board? I think those were WD1002-HD0?
>
>Yes, exactly the same as used in the Kaypro and a bunch of other computers 
>at the time. The WD1002-HDO is the same board as the WD1002-05, except 
>the -HDO does not have the floppy controller components. Hence, HDO is 
>hard-drive only.
>
>

Looked them up, and the datasheets.

The WD1002-05 and WD1002-HDO are NOT the same as the WD1002-SHD. the -SHD is SASI,
and the -05 and -HDO are some host bus. even the block diagrams are different, and the -SHD
datasheet mentions SASI and the commands supported.

Looks like the Eliminator supporter the same WD1002-HDO as the Kaypro 10...

SO my other question remains...

Do the Disto 4-n-1 and HD II support a SCSI HDD attached directly, as opposed to going MFM?