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Issue SCT Command Using Write Log Ext
Command Block Output Registers
Register
7 6 5 4 3 2 1 0
Feature
Current
Reserved
Previous
Reserved
Sector Count
Current
01h
Previous
00h
LBA Low
Current
E0h
Previous
Reserved
LBA Mid
Current
00h
Previous
00h
LBA High
Current
Reserved
Previous
Reserved
Device/Head
-
-
- D -
-
-
-
Command
3Fh
Table 49 Input Registers of SCT Command Using Write Log Ext
Command Block Input Registers (Success)
Command Block Input Registers (Error)
Register
7 6 5 4 3 2 1 0 Register
7 6 5 4 3 2 1 0
Error
00h
Error
04h
Sector Count
HOB=0
Depends on command
Sector Count
HOB=0
Extended Status Code
(LSB)
(LSB)
HOB=1
Reserved
HOB=1
Reserved
LBA Low
HOB=0
Depends on command
LBA Low
HOB=0
Extended Status Code
(MSB)
(MSB)
HOB=1
Reserved
HOB=1
Reserved
LBA Mid
HOB=0
Number of sectors (LSB) LBA Mid
HOB=0
Number of sectors (LSB)
HOB=1
Reserved
HOB=1
Reserved
LBA High
HOB=0
Number of sectors (MSB) LBA High
HOB=0
Number of sectors (MSB)
HOB=1
Reserved
HOB=1
Reserved
Device/Head
-
-
-
-
-
-
-
- Device/Head
-
-
-
-
-
-
-
-
Status
50h
Status
51h
All ATA “previous” registers are reserved in Write Log Ext responses.
Table 50 Output Registers of SCT Command Using Write Log Ext
93
Western Digital Ultrastar DC HC310 SATA Product Manual