Hitachi DK23EA Specifications - Page 67

Byte n thru n+11 n+12 thru n+23 n+24 thru n+35 n+36 thru n+47 n+48 thru n+59 n+60 thru n+89 Table 6.14 Error log data structure Descriptions First command data structure Second command data structure Third command data structure Fourth command data structure Fifth command data structure Error data structure Command data structure The fifth command data structure contains the command or reset for which the error is being reported. The fourth command data structure contains the command or reset that preceded the command or reset for which the error is being reported, the third command data structure contains the command or reset preceding the one in the fourth command data structure, etc. If fewer than four commands and resets preceded the command or reset for which the error is being reported, the unused command data structures are zero filled. If the command data structure represents a command or software reset, the content of the command data structure is as shown in following table. If the command data structure represents a hardware reset, the content of byte n shall be FFh, the content of bytes n+1 through n+7 are not valid, and the content of bytes n+8 through n+11 contains the timestamp. Byte n n+1 n+2 n+3 n+4 n+5 n+6 n+7 n+8 ~ n+11 Descriptions Content of Device Control register when the Command register was written. Content of Features register when the Command register was written. Content of Sector Count register when the Command register was written. Content of Sector Number register when the Command register was written. Content of Cylinder Low register when the Command register was written. Content of Cylinder High register when the Command register was written. Content of Device/Head register when the Command register was written. Content written to the Command register. Timestamp Timestamp is the time since power-on in milliseconds when command acceptance occurred. K6602637 Rev.3 02.27.01 - 67 -