Fujitsu MAT3300FC 用户手册

下载
页码 460
 
4.4   Maintenance, Diagnostic Commands 
 
C141-C008 
4-199 
4.4.6  WRITE LONG (3F)  
 
 Bit 
Byte 
7 6 5 4 3 2 1 0 
0 X‘3F’ 
0 0 0 0 0 0 0 0 
Logical Block Address (MSB) 
Logical Block Address 
Logical Block Address 
Logical Block Address (LSB) 
0 0 0 0 0 0 0 0 
Transfer Byte Length (MSB) 
Transfer Byte Length (LSB) 
0 0 0 0 0 0 0 0 
 
This command writes the data block data transferred from the INIT, together with 
the ECC to form bytes, in the logical data blocks on the disk media specified in 
the “Logical block address” field in the CDB.  Normally, this command is used 
for checking the ECC function in combination with the READ LONG command. 
The object of this command’s operation is only 1 data block.  Also, the data 
transferred from the INIT by this command must have the same order and the 
same length as the data transferred to the INIT from the IDD by the READ LONG 
command. 
The “Transfer byte length” field in the CDB indicates the number of bytes of data 
transferred from the INIT by this command.  When the “Transfer byte length” 
specification is zero, this command is terminated normally without performing 
anything. 
If a value specifying a length (other than zero) that does not match the data format 
on the disk media is specified in the “Transfer byte length” field in the CDB, that 
command is terminated with a CHECK CONDITION status without data being 
transferred to the INIT.  The sense data at this time indicate the following 
contents and the INIT can determine the correct “Transfer byte length” from their 
contents.