Re: SCSI expert needed

From: Anders Carlsson <>
Date: Thu, 27 Jan 2011 15:00:46 +0100
Message-ID: <00e701cbbe2a$98612bc0$>
Peter Krefting wrote:

> the linked SASI spec also lists [cmd 12] as "standard", not "optional"

We should not forget this hard drive is an integrated solution which 
consists of an CBM DOS IEEE board, a SASI MFM controller board and a hard 
disk unit. Thus I suppose the communication between the DOS and MFM 
controller boards didn't need to implement more parts of the spec than 
absolutely required. Commodore probably didn't sell the IEEE boards 
separately to other manufacturers to integrate with their SASI hard drives.

By the way, I wonder if the units Ruud is working with are the ones that 
came from me. I had four 90x0 units of which I managed to get two working 
and two broken ones that I donated for the costs of shipping. I remember Jan 
wrote to me that even the once working unit stopped working after a while, 
so likely they all are from the same batch and place which even Ruud himself 
got to visit. :-D

The fact that a former Commodore reseller once got the drives in return from 
customers could be of two reasons: the drives had failed or the customer had 
upgraded to e.g. IBM PC equipment. I'm afraid the former cause was more 
common for returning stuff to your reseller.

Best regards

Anders Carlsson

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Received on 2011-01-27 15:00:05

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