110 Series 3-35
3.16 Hard Disk Test Detail Status
When an error occurs in the Hard Disk Test, the following message displays:
HDC status = XXXXXXXX
Detailed information about the Hard Disk Test error displays on the screen by an eight-digit
number. The first four digits represent the hard disk controller (HDC) error status number;
the last four digits are not used.
The hard disk controller error status is composed of 2 bytes; the first byte displays the con-
tents of the HDC status register in hexadecimal form; the second byte displays the HDC error
register.
The contents of the HDC status register and error register are described in Tables 3-3 and
3-4.
Table 3-3 Hard disk controller status register contents
Bit Name Description
7 BSY “0” --- HDC is ready.
(Busy) “1” --- HDC is busy.
6 DRDY “0” --- Hard disk drive is not ready to accept any command.
(Drive ready) “1” --- Hard disk drive is ready to accept any command.
5 DWF “0” --- DWF error is not detected.
(Drive write fault) “1” --- Write fault condition occurs.
4 DSC “0” --- The hard disk drive heads are not settled over a track.
(Drive seek “1” --- The hard disk drive heads are settled over a track.
complete)
3 DRQ “0” --- Drive is not ready for data transfer.
(Data request) “1” --- Drive is ready for data transfer.
2 CORR “0” --- Other.
(Corrected data) “1” --- Correctable data error is corrected.
1 IDX “0” --- Other.
(Index) “1” --- Index is sensed.
0 ERR “0” --- Other.
(Error) “1” --- The previous command was terminated with some error.
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