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Bit
Byte
76543210
5 –1
to
5
(MSB)
Parameter Code ( )
(LSB)
5 + 1 DU DS TSD ETC TMC RsvdLP
5 + 2 Parameter Length (1)
5 + 3 Value of TapeAlert Flag (Flag is set when Bit 0 = 1; Bits 1 7 are Reserved)

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Parameter Code This field contains the Flag code. See Table 5-26 for the supported
Flags, level of severity, and the Flags definitions.
Parameter Length This field is set to 1.
Value of Tape Alert
Flag If Bit 0 is set to 1, indicates that TapeAlert has sensed a problem.
See Table 5-26 for the supported Flags and their definitions. If Bit 0
is 0, the Flag is not set and no problem has been sensed.

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For definitions of bits that make up the Control Byte (the byte 5n + 1above), refer to Section 5.8.3, Table 5-21.