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Z5K500 OEM Specifications 
105 
If the feature set associated with the log specified in the Sector Number register is not supported or 
enabled, or if the values in the Sector Count, Sector Number or Cylinder Low registers are invalid, the 
device shall return command aborted. 
14.17.1 
General purpose Log Directory 
The following table defines the 512 bytes that make up the General Purpose Log Directory. 
Description 
Bytes 
Offset 
General Purpose Logging Version 
2
00h 
Number of sectors in the log at log address 01h (7:0) 
1
02h 
Number of sectors in the log at log address 01h (15:8) 
1
03h 
Number of sectors in the log at log address 02h (7:0) 
1
04h 
Number of sectors in the log at log address 02h (15:8) 
1
05h 
...  
 
Number of sectors in the log at log address 80h (7:0) 
1
100h 
Number of sectors in the log at log address 80h (15:8) 
1
101h 
...  
 
Number of sectors in the log at log address FFh (7:0) 
1
1FEh 
Number of sectors in the log at log address FFh (15:8) 
1
1FFh 
 512
 
Table 74 General purpose Log Directory 
The value of the General Purpose Logging Version word shall be 0001h. A value of 0000h indicates that 
there is no General Purpose Log Directory. 
The logs at log addresses 80-9Fh shall each be defined as 16 sectors long. 
14.17.2 
Extended comprehensive SMART error log 
The following table defines the format of each of the sectors that comprise the Extended Comprehensive 
SMART error log. Error log data structure shall not include errors attributed to the receipt of faulty 
commands such as command codes not implemented by the device or requests with invalid parameters 
or in valid addresses. 
Description 
Bytes
Offset 
SMART error log version 
1
00h 
Reserved 1
01h 
Error log index (7:0) 
1
02h 
Error log index (15:8) 
1
03h 
1
st
 error log data structure 
124
04h 
2
nd
 error log data structure 
124
80h 
3
rd
 error log data structure 
124
FCh 
4
th
 error log data structure 
124
178h 
Device error count 
2
1F4h 
Reserved 9
1F6h 
Data structure checksum 
1
1FFh 
 512
 
Table 75 Extended comprehensive SMART error Log