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IBM DARA-206000 - Travelstar 12 GB Hard Drive Specifications page 116

Dara-2 series 6 gb - 25 gb 2.5-inch hard disk drive with ata interface
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The following symbols are used in the command descriptions:
Output Registers
0
Indicates that the bit must be set to 0.
1
Indicates that the bit must be set to 1.
D
The device number bit. Indicates that the device number bit of the Device/Head Register
should be specified. Zero selects the master device and one selects the slave device.
H
Head number.
output parameter and should be specified.
L
LBA mode. Indicates the addressing mode. Zero specifies CHS mode and one does LBA
addressing mode.
R
Retry. Indicates that the Retry bit of the Command Register should be specified.
B
Option Bit. Indicates that the Option Bit of the Sector Count Register should be specified.
(This bit is used by Set Max ADDRESS command)
V
Valid. Indicates that the bit is part of an output parameter and should be specified.
x
Indicates that the hex character is not used.
-
Indicates that the bit is not used.
Input Registers
0
Indicates that the bit is always set to 0.
1
Indicates that the bit is always set to 1.
H
Head number.
input parameter and will be set by the device.
V
Valid. Indicates that the bit is part of an input parameter and will be set to 0 or 1 by the
device.
-
Indicates that the bit is not part of an input parameter.
The command descriptions show the contents of the Status and Error Registers after the device has com-
pleted processing the command and has interrupted the host.
106
O E M Specifications of DARA-2xxxxx 2.5 inch H D D Rev 2.1
Indicates that the head number part of the Device/Head Register is an
Indicates that the head number part of the Device/Head Register is an

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