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6.7.35 Word 129: Write protect Status (Vendor information)
Word 129 identifies the Vendor Specific Write Status.
? Bit 15 = permanent write protect, out of spare blocks
? Bit 14 = permanent write protect due to table corruption
? Bit 13 = read protection due to table corruption
? Bit 9 = permanent write protect from vendor command
? Bit 8 = temporary write protect from vendor command
6.8 Idle (97h or E3h)
This command causes the Drive to set BSY, enter the Idle mode, clear BSY and generate an interrupt. If the sector
count is non-zero, it is interpreted as a timer count (each count is 5ms) and the automatic power down mode is
enabled. If the sector count is zero, the automatic power down mode is disabled. Note that this time base (5ms)
is different from the ATA specification. Table 23 defines the Byte sequence of the Idle command.
Table 23: Idle
Task File Register
7
6
5
4
3
2
1
0
COMMAND
97h or E3h
DRIVE/HEAD
nu
nu
nu
D
nu
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
nu
nu
nu
Timer Count (5ms increments)
nu
6.9 Idle Immediate (95h or E1h)
This command causes the Drive to set BSY, enter the Idle mode, clear BSY and generate an interrupt. Table 24
defines the Idle Immediate command Byte sequence.
Table 24: Idle Immediate
Task File Register
7
6
5
4
3
2
1
0
COMMAND
95h or E1h
DRIVE/HEAD
nu
nu
nu
D
nu
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
nu
nu
nu
nu
nu
6.10 Media Lock/Media Unlock (DEh/DFh)
This command is effective an NOP command and always fails with the Drive returning command aborted. Table
25 defines the Byte sequence of the commands.
Table 25: Media Lock/Media Unlock
Task File Register
7
6
5
4
3
2
1
0
COMMAND
DEh/DFh
DRIVE/HEAD
nu
nu
nu
D
nu
CYLINDER HI
CYLINDER LOW
SECTOR NUM
SECTOR COUNT
FEATURES
nu
nu
nu
nu
nu
6.11 NOP (00h)
This command always fails with the Drive returning command aborted. Table 26 defines the Byte sequence of
the NOP command.
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 0.92
CH-9552 Bronschhofen
Switzerland
F-240_data_sheet_CA-HxBV_Rev092.doc
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