This message is from the T13 list server.
The answer to your question is:
The mechanism to change this value is device vendor-specific.
The vendor may fix it for all devices, or may have some special
configuration utility or a vendor-specific command or whatever it
chooses.
Background:
When I made this proposal back in 1999, I was working on an ATAPI tape (for
a previous employer).
> http://t13.org/technical/d99127r0.pdf
The problem that this was to solve was this:
Some host software sent a PACKET command where the byte count was zero
and expected that the device would default the DRQ packet size to the
current blocksize.
Never mind that ATA5 (at the time) said
If the PACKET command results in a data transfer:
1) the host shall not set the byte count limit to zero.
If the host sets the byte count limit to zero the device shall
return command aborted;
All this so that this customer (important to us at the time) could appear
compliant, when they really weren't.
Thank You !!!
-----------------------------------------------------------------
Jim Hatfield
Seagate Technology LLC
e-mail: [EMAIL PROTECTED]
s-mail: 389 Disc Drive; Longmont, CO 80503 USA
voice: 720-684-2120
fax....: 720-684-2711
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"David F."
<[EMAIL PROTECTED]
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Available [t13] Word 125 ATAPI byte count=0
behavior
05/31/2006 09:02
PM
Hello,
I've stumbled across this (7.18.6.39) and noticed that it said "The device
may be reconfigured to report a new value".
What it doesn't say is how that is done?
TIA!!
--
David F.
TeraByte Unlimited
http://www.terabyteunlimited.com
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