Table of Contents
Advertisement
When the UnitOfL (Logical Unit Offline) bit is set to 1, the controller performs
diagnostics that enables write operations on user medium or operation that affect
user visible medium positioning.
When the UnitOfL bit is set to 0, the diagnostics that enables write operations on
user medium or operations that affect user visible medium positioning are inhibited.
The Parameter List Length field specifies the length in bytes of the diagnostic
parameters to be transferred during the Data Out phase.
The host computer must set this field to 0 if the SelfTest bit is set to 1. If the
SelfTest bit is set to 0, the Parameter List Length field must be set to a value greater
than or equal to 6
CONDITION status with ILLEGAL REQUEST sense key.
The contents of diagnostic parameter list are written in (1) Page Format diagnostic
parameter and (2) Vender Unique diagnostic parameter.
(1) Page Format diagnostic parameter
The diagnostic parameters commonly used by the Send Diagnostic and Receive
Diagnostic Results commands are shown in Table 5.101, defined when the PF bit is
set to 1.
For the Send Diagnostic command, the Parameter List Length specifies the
number of diagnostic parameter bytes. The Parameter List Length of 0 indicates
that no diagnostic parameter is transferred. The controller does not handle this
condition as an error ( no operation ). The host computer may transfer one page of
data as a diagnostic parameter.
If any shortage of parameters or multiple-page transfer occurs, the controller
returns the CHECK CONDITION status with ILLEGAL REQUEST sense key.
For the Receive Diagnostic Results command, the Allocation Length specifies the
number of diagnostic parameter bytes.
5 COMMAND DESCRIPTIONS
. If this condition is not met, the controller creates the CHECK
H
OEM MANUAL:K6602924
Revision: 1 / Date: 2003.03.06
Page: 232 / 273
Advertisement
Table of Contents
