ATAPI Shadow Registers on Non-existent Slave Drives

Ken Wolfgang kenw at colorado.cirrus.com
Wed Apr 29 07:38:15 PDT 1998


* From the T10 (formerly SCSI) Reflector (t10 at symbios.com), posted by:
* Ken Wolfgang <kenw at colorado.cirrus.com>
*
It appears that several of the newer ATAPI drives (especially DVD-ROM =
drive) are no longer following the specification for shadowing the =
registers of a non-existent slave drive.  It appears they are either =
tri-state in the reads of the non-existent drives register or are =
driving FFH as the shadow register.  Has this requirement been removed =
|from the specification?  And if so, is there a new specification that =
deals with this situation?

Thanks
Ken Wolfgang
Cirrus Logic
*
* For T10 Reflector information, send a message with
* 'info t10' (no quotes) in the message body to majordomo at symbios.com





More information about the T10 mailing list