Toshiba 50CT User Guide - Page 100

Tests and Diagnostics, Hard Disk Test Detail Status

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3 Tests and Diagnostics 3.17 Hard Disk Test Detail Status 3.17 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 and the last four digits are not used. The hard disk controller error status is composed of 2 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 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 "1" - Write fault condition occurs fault) 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 "0" - Drive is not ready for data transfer (Data request) "1" - Drive is ready for data transfer 2 CORR (Corrected data) "0" - Not used "1" - Correctable data error is corrected 1 IDX "0" - Not used (Index) "1" - Index is sensed 0 ERR "0" - Normal (Error) "1" - The previous command was terminated with some error Libretto 50CT/70CT Maintenance Manual 3-35

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3 Tests and Diagnostics
3.17
Hard Disk Test Detail Status
Libretto 50CT/70CT Maintenance Manual
3-35
3.17
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
and the last four digits are not used.
The hard disk controller error status is composed of 2 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
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
(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
“0”
°
Drive is not ready for data transfer
(Data
request)
“1”
°
Drive is ready for data transfer
2
CORR
(Corrected
data)
“0”
°
Not used
“1”
°
Correctable data error is corrected
1
IDX
“0”
°
Not used
(Index)
“1”
°
Index is sensed
0
ERR
“0”
°
Normal
(Error)
“1”
°
The previous command was terminated with some error