Maxtor D740X-6L 20.0 AT Product Manual page 79

        5 ' 6 % 1 0 ( + ) 7 4 # 6 + 1 0
The SET CONFIGURATION command is secured to prevent accessing it
accidentally. To access the SET CONFIGURATION command, you must write the
pattern shown in Table 6-8 to the Command Block Registers. The first byte, FFh, is
a subcode to the extended command code F0h.
6 C D N G  
# & & 4 ' 5 5
1F2h
1F3h
1F4h
1F5h
1F6h
1F7h
0 Q V G
        5 ' 6 % 1 0 ( + ) 7 4 # 6 + 1 0 9 + 6 * 1 7 6 5 # 8 + 0 ) 6 1 & + 5 -
The SET CONFIGURATION WITHOUT SAVING TO DISK command is
secured to prevent accidentally accessing it. To access this command, you must write
the pattern shown in Table 6-9 to the Command Block Registers. The first byte, FEh,
is a subcode to the extended command code F0h.
Accessing the SET CONFIGURATION WITHOUT SAVING TO DISK Command
6 C D N G  
# & & 4 ' 5 5
1F2h
1F3h
1F4h
1F5h
1F6h
1F7h
Accessing the SET CONFIGURATION Command
8 # . 7 '
FFh
FFh
FFh
3Fh
AXh
(Drive 0)
BXh
(Drive 1)
F0h
Registers 1F2h through 1F5h must contain the exact values
shown above. These values function as a key. The drive responds
by setting the ABRT bit in the Error register if the key is not
entered correctly.
To select the drive being reconfigured, register 1F6h should be
set. For execution of the command to begin, load register 1F7h
with F0h
.
8 # . 7 '
FEh
FFh
FFh
3Fh
AXh
(Drive 0)
BXh
Drive 1)
F0h
Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT
ATA Bus Interface and ATA Commands
& ' ( + 0 + 6 + 1 0
Set Configuration Subcode
Password
Password
Password
Drive Select
Drive Select
Extended Command Code
& ' ( + 0 + 6 + 1 0
Set Configuration Subcode
Password
Password
Password
Drive Select
Drive Select
Extended Command Code
6-13