Quantum Audio STT2401A Manuale Utente

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ATAPI Interface 
Chapter 5 
Seagate Travan 40 Product Manual 
Page 71 
 
 
READ POSITION (Group 1, Op. Code 34) 
The READ POSITION command reports the current position of the logical unit and 
any data blocks in the buffer. No tape movement shall occur as a result of the 
command. The drive may disconnect during this command. 
CDB for READ POSITION Command 
 
Data Bits 
 
Byte 
Hex 
34 
BT 
0X 
00 
00 
00 
00 
00 
00 
00 
00 
BT: The Block Address Type bit determines the reporting method of the block 
location field. If 0, the logical addresses are returned for current block and the last 
block in the data buffer. If set to 1, the physical block address is returned for the first 
block location and the last block in the data buffer. Information is returned to the host 
in the format shown below. 
READ POSITION Data Format 
 
Data Bits 
 
Byte 
Hex 
BOP 
EOP 
BPU 
XX 
Partition Number 
XX 
00 
00 



MSB 
 
First Block Location 
LSB 
XX 
XX 
XX 
XX 

0A 
0B 
MSB 
 
Last Block Location 
LSB 
XX 
XX 
XX 
XX 
0C 
00 
0D 
0E 
0F 
MSB 
Number of Blocks in Buffer 
LSB 
XX 
XX 
XX 
10 
11 
12 
13 
MSB 
 
Number of Bytes in Buffer 
LSB 
XX 
XX 
XX 
XX