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Chapter 5 ATAPI Interface
Page 56 STT8000A Product Manual
The following table describes the REQUEST SENSE layout.
Byte Description Value Meaning
0
Valid, Error Code 70h,71h 80h = Information Field Valid
+ 70h = Current Errors
or 71h = Deferred Errors
1
Reserved (Segment Number) 00 —
2
Filemark, EOM, ILI, Sense Key NN 80h = Filemark
+ 40h = EOM
+ 20h = ILI
+ Sense Key
3-6
Information NNNNNNNN Transfer Residue or
Unwritten Blocks + Filemarks
7
Additional Sense Length 0Ah 10 bytes following
8-11
Command Specific Information 00h Not Supported
12
Additional Sense Code (ASC) NN
13
Additional Sense Code
Qualifier (ASCQ)
NN
14
Field Replaceable Unit Code 00h Not Supported
15
SKSV + Sense Key Specific 00h Not Supported
16,17
Sense Key Specific 0000h Not Supported
18,19
Pad 0000h Pad to 4-byte boundary