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3.17 Hard Disk Test Detail Status
When an error occurs in the hard disk test, the following message is displayed:
HDC status = XXXXXXXX
Detailed information about the hard disk test error is displayed 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 and the second byte displays the HDC
error register.
The contents of the HDC status register and error register are listed in tables 3-4 and 3-5.
Table 3-4 Hard disk controller status register contents
Bit
Name
7
BSY
(Busy)
6
DRDY
(Drive ready)
5
DWF
(Drive write fault)
4
DSC
(Drive seek
complete)
3
DRQ
(Data request)
2
CORR
(Corrected data)
1
IDX
(Index)
0
ERR
(Error)
3-36
Description
"0" --- HDC is busy.
"1" --- HDC is ready.
"0" --- Hard disk drive is not ready to accept any command.
"1" --- Hard disk drive is ready.
"0" --- DWF error is not detected.
"1" --- Write fault condition occurred.
"0" --- The hard disk drive heads are not settled over a track.
"1" --- The hard disk drive heads are settled over a track.
"0" --- Drive is not ready for data transfer.
"1" --- Drive is ready for data transfer.
"0" --- Other
"1" --- Correctable data error is corrected.
"0" --- Other
"1" --- Index is sensed.
"0" --- Other
"1" --- The previous command was terminated with some error.
610CT
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