Read Position Command - Seagate STT20000A Product Manual

ATAPI Interface

Read Position command

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