This message is from the T13 list server.
The answer to this is why LOTS of ATA stuff are 'prohibited' for ATAPI - -
-
If SCSI/ATAPI has a way to do it, then it should be done via ATAPI.
'download microcode' is normally done in SCSI via the SCSI 'write buffer'
cmd
(note: NOT the ATA 'write buffer' cmd)
therefore: ATA 'download microcode' is prohibited for packet devices.
Thank You !!!
-----------------------------------------------------------------
Jim Hatfield
ATA Interface Firmware & T13 (ATA/ATAPI) Standards Representative
Seagate Technology LLC
e-mail: [EMAIL PROTECTED]
s-mail: 389 Disc Drive; Longmont, CO 80503 USA
voice: 720-684-2120
fax....: 720-684-2711
====================================================
"Wolford, Jeff"
<[EMAIL PROTECTED]
com> To
Sent by: <[EMAIL PROTECTED]>
[EMAIL PROTECTED] cc
rg
No Phone Info Subject
Available [t13] ATA-7 Conflict: Download
Microcode for ATAPI drives
12/02/2004 05:18
PM
I have found a conflict in the ATA-7 specification:
In the Identify Packet Device, its lists Word 83, bit 0 as indicating
Download Microcode command support
However:
Under the Download Microcode command (Sec 6.11) it says the use is
"Prohibited" for packet command devices.
So if it is prohibited then an ATAPI device is required to clear Word 83
(and Word 86) bit 0 to 0, and the Identify Packet Device should indicate
such.
QUESTION: Why is the download microcode command prohibited for ATAPI
devices ?
Why don't we want them to use the same OP code ?
Jeff
Jeff Wolford���������������������� Email: [EMAIL PROTECTED]
Master Architect
Storage Interface and Tools - Business PC Group ��� Voice: (281)
514-9465,���� Pager: (800) 973-5739
Hewlett-Packard Corporation
