ATA Command Set
XL500S
28
RELEASED 10/21/10 (WD CONFIDENTIAL)
2679-701211-A06
4.1.2
Optional Subcommands
Table 4-2 lists the hexadecimal codes specific to each SATA 2.5 command supported by
these hard drives. Refer to the SATA 2.5 specification for full details on each command.
Table 4-2. Optional Subcommands
4.1.3
Obsolete Commands
Table 4-3 lists the hexadecimal codes specific to each obsolete command supported by
these hard drives.
Table 4-3. Obsolete Command Opcodes
STANDBY IMMEDIATE
E0
WRITE BUFFER
E8
WRITE DMA
CA
WRITE DMA EXT
35
WRITE FPDMA QUEUED
61
WRITE LOG EXT
3F
WRITE LOG DMA EXT
57
WRITE MULTIPLE
C5
WRITE MULTIPLE EXT
39
WRITE SECTOR(S)
30
WRITE SECTOR(S) EXT
34
WRITE UNCORRECTABLE EXT
45
COMMAND
SUBFUNCTION
DOWNLOAD MICROCODE
Mode 3
COMMAND
HEX OPCODE
INITIALIZE DEVICE PARAMETERS
91
READ LONG
22
RECALIBRATE
10
SEEK
70
WRITE LONG
32
COMMAND
HEX OPCODE