IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive Specifications page 175

Output parameters to the device
Feature
01h
02h
03h
04h
B
Sector Numbern LBA mode this register contains LBA bits 0–7 which are to be input. (L = 1) In CHS
Cylinder High/Low
H
L
D
Input parameters from the device
Sector NumberIn LBA mode this register contains the Adjusted max. LBA bits 0–7.(L = 1)
Cylinder High/Low
H
Destination code for this command
SET MAX SET PASSWORD
SET MAX LOCK
SET MAX UNLOCK
SET MAX FREEZE LOCK
When the Set Max ADDRESS command is executed, this register is ignored.
This indicates the option bit for selection whether nonvolatile or volatile. B = 0 is
the volatile condition. When B = 1, MAX LBA/CYL—which is set by the Set Max
ADDRESS command—is preserved by POR and HARD RESET. When B = 0,
MAX LBA/CYL—which is set by Set Max ADDRESS command—will be lost by
POR and HARD RESET. B = 1 is not valid when the device is in Address Offset
mode and the command is aborted.
mode this register is ignored. (L = 0)
In LBA mode this register contains LBA bits 8–15 (Low) and bits 16–23 (High)
which are to be set. (L = 1)
In LBA mode this register contains LBA bits 24–27 which are to be input. (L = 1)
In CHS mode this register is ignored. (L = 0)
This indicates the LBA addressing mode. L = 0 specifies the CHS mode and L = 1
specifies the LBA addressing mode.
This indicates the device number bit. The device number bit of the Device/Head
should be specified. D = 0 selects the master device and D = 1 selects the slave
device.
In CHS mode this register contains the maximum sector number (= 63). (L = 0)
In LBA mode this register contains the Adjusted max. LBA bits 8–15 (Low) and
bits 16–23 (High). (L = 1)
In CHS mode this register contains the max cylinder number which is set. (L = 0)
In LBA mode this register contains the Adjusted max. LBA bits 24–27. (L = 1)
In CHS mode this register contains the maximum head number (= 15). (L = 0)
Travelstar 60GH & 40GN hard disk drive specifications
162