Seagate STT8000A - Manual (Page 61)

ATAPI Interface Chapter 5
STT8000A Product Manual Page 53
Read Position command
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation code (34h)
1 Reserved
2 Reserved
3 Reserved
4 Reserved
5 Reserved
6 Reserved
7 Reserved
8 Reserved
9 Reserved
The following table describes the Read Position layout.
Byte Description Value Meaning
0 BOP, EOP, BPU nn 80h = Beginning of Partition
40h = End of Partition
04h = Block Position Unknown
1 Partition Number 00/01h Current Partition (bit 0)
2,3 Reserved 00h -
4-8 First Block Location
(Host Block Location)
NNNNNNNN Logical Number of next block to transfer
between host and buffer
8-11 Last Block Location
(Medium Block
Location)
NNNNNNNN* Not Supported
12 Reserved 00h —
13-15 Blocks in Buffer 000000* Not Supported
16-19 Bytes in Buffer 00000000* Not Supported