Mode Select (6)
Julyl 2017 Command Set 73
Informational Exceptions TapeAlert Page
TABLE 4-34 defines the Informational Exceptions TapeAlerts page.
TABLE 4-34 Informational Exceptions TapeAlerts Page
Byte
Bit
7654 3 21 0
0 PS (0) SPF (0) Page Code (1Ch)
1 Page Length (0Ah)
2 Perf (0) Rsvd (0) EBF(0) EWasc
DExcpt (1)
Test Rsvd (0)
LogErr (0)
3 Reserved (0) MRIE (3h)
4 to 7 (MSB) Interval Timer (LSB)
8 to 11 (MSB) Report Counter / Test Flag Number (LSB)
Informational Exceptions TapeAlerts Page Definitions:
PS The Parameters Saveable bit is set to 0.
SPF The library accepts a value of 0 for the SubPage Format bit, indicating page_0
format is being used.
Perf Performance bit is set to 0, which indicates acceptance of informational
exception operations that cause delays.
EBF Enable Background Functions bit will always be 0.
EWasc This should be set to 0 for the enable warning bit, indicating warning
reporting shall be disabled.
DExcpt The library accepts a value of 1, which indicates the target Disables All
Information Exception operations and ignores the MRIE field.
In this mode, the software must poll the TapeAlert Log page.
Test
• 0 = The library does not generate false/test informational exceptions.
• 1 = The library generates false/test informational exception conditions.
LogErr The Log Error information exception conditions is set to 0, which indicates this
is vendor-specific.
MRIE Method the library uses to Report Informational Exceptions must be 3h, which
indicates that the library reports any informational exception conditions by
returning Check Condition status.
Interval Timer Bytes 4 through 7 must be 00h. The library will only report informational
exception condition one time.
Report Counter /
Test Flag Number
This is a dual purpose field:
• When the Test Flag bit is 0, this field is the report counter.
Bytes 8 through 11 must be set to 00h to indicate there is no limit to the
number of times the library will report the informational exception
condition. This value is returned with Mode Sense.
• When the Test bit is 1, this field is the test flag number.