Hard Disk Test Detail Status - Toshiba 650CT Maintenance Manual

3.18 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
and the last four digits are not used.
The hard disk controller error status is composed of two bytes; the first byte displays the
contents 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 3-3 and 3-4.
Table 3-3 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" --- The HDC is ready.
"1" --- The HDC is busy.
"0" --- The hard disk drive is not ready to accept any
command.
"1" --- The hard disk drive is ready.
"0" --- A DWF error is not detected.
"1" --- A write fault condition occured.
"0" --- The hard disk drive heads are not settled over a track.
"1" --- The hard disk drive heads are settled over a track.
"0" --- The drive is not ready for data transfer.
"1" --- The drive is ready for data transfer.
"0" --- Not used.
"1" --- A correctable data error was corrected.
"0" --- Not used.
"1" --- The index is sensed.
"0" --- Normal.
"1" --- The previous command was terminated with some
error.
650CT