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3 and Diagnostics 3.21 Hard Disk Test Detail Status
3.21 Hard Disk Test Detail Status
When an error occurs in the hard disk test, the following message is displayed:
HDC status = XXXX
Detailed information about the hard disk test error is displayed on the screen by a four-digit
number.
The hard disk controller error status is composed of two bytes; the first byte displays the
contents of the HDC error status register in hexadecimal form and the second byte displays
the HDC error register.
The contents of the HDC error status register and error register are listed in Tables 3-3 and 3-
4.
Table 3-3 Hard disk controller status register contents
Bit Name Description
7 BSY
(Busy)
“0” HDC is ready.
“1” HDC is busy.
6 DRY
(Drive ready)
“0” Hard disk drive is not ready to accept any command.
“1” Hard disk drive is ready.
5 DWF
(Drive write fault)
“0” DWF error is not detected.
“1” Write fault condition occurred.
4 DSC
(Drive seek complete)
“0” The hard disk drive heads are not settled over a track.
“1” The hard disk drive heads are settled over a track.
3 DRQ
(Data request)
“0” Drive is not ready for data transfer.
“1” Drive is ready for data transfer.
2 COR
(Corrected data)
“0” Not used
“1” Correctable data error is corrected.
1 IDX
(Index)
“0” Not used
“1” Index is sensed.
0 ERR
(Error)
“0” Not used
“1” The previous command was terminated with an error.
3-54 Satellite A10/TECRA A1/Satellite Pro A10 Maintenance Manual (960-445)