Hitachi DK32EJ - Ultrastar Series 36.9 GB Hard Drive Reference Manual page 194

Table 6-52 Informational Exceptions Control Page (Page Code = 1CH)(cont'd)
8
9
10
11
The informational exceptions control page defines the methods to control the
reporting of specific informational exception conditions in the controller.
The informational exception conditions occur as the result of exceeding the
threshold of informational exceptions in the controller.
The informational exception conditions occur asynchronously to any commands
issued by the host computer.
An EBF (Enable Background Function) bit of one indicates the target shall enable
background functions. An EBF bit of zero indicates the target shall disable the
functions.
Since the controller does not support EBF bit, this bit ignore.
A Perf (Performance) bit of 0 allows the informational exception operations to
cause the delays of command operation from the host computer.
A Perf bit of 1 does not allow the informational exception operations to cause the
delays of command operation from the host computer.
Since the controller does not support Perf bit, this bit is ignored.
A EWasc(Enable Warning) bit of zero indicates that the controller does not report
the warning.
A EWasc bit of one indicates that the controller reports warning.The method for
reporting the warning depends on the MRIE field setting.
Since the conroller does not support EWasc bit, this bit is ignored.
A DExcpt (Disable Exception control) bit of 0 indicates that information exception
operations are enabled.
conditions is determined from the MRIE (Method of Reporting Informational
Exceptions; see Table 6-53) field when the DExcpt bit is set to 0.
MODE SELECT:(15h)
6 COMMAND DESCRIPTIONS
Report Count (MSB)
Report Count
Report Count
Report Count (LSB)
The method of reporting information exception
OEM MANUAL:K6602771
Revision: 2 / Date: 2002.12.19
Page: 194 / 313