3 Tests and Diagnostics
3-40 [CONFIDENTIAL] PORTEGE M700/M750 Maintenance Manual (960-661)
Table 3-4 Error register contents
Bit Name Description
7 BBK
(Bad block mark)
“0” … Not used.
“1” … A bad block mark is detected.
6 UNC
(Uncorrectable)
“0” … There is no uncorrectable data error.
“1” … Uncorrectable data error has been detected.
5 —— Not used.
4 IDN
(Identification)
“0” … Not used.
“1” … There is no ID field in the requested sector.
3 —— Not used
2 ABT
(Abort)
“0” … Not used.
“1” … Illegal command error or command abort.
1 TK0
(Track 0)
“0” … The hard disk found track 0 during a recalibrate
command.
“1” … The hard disk could not find track 0 during a
recalibrate command.
0 —— Not used.
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