Seagate STT8000A - Manual (Page 64)

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