User`s manual

SIOP Firmware Structures
B-2 Single Board Computers SCSI Software UserÕs Manual
B
Table B-1. Command Structure
Byte Offset (hex) Parameter
00 User ID
04 Command Control
08 Device Address or SIOP Interrupt Level
0C LUN
10 CDB Length or Queue Depth
14 CDB (bytes 0-3)
18 CDB (bytes 4-7)
1C CDB (bytes 8-B)
20 Message-In Length
24 Message-In Buffer Pointer
28 Message-In Bytes (0-3)
2C Message-In Bytes (4-7)
30 Message-In Bytes (8-B)
34 Message-Out Length
38 Message-Out Buffer Pointer
3C Message-Out Bytes (0-3)
40 Message-Out Bytes (4-7)
44 Message-Out Bytes (8-B)
48 Data Count
4C Data Pointer or Scatter/Gather List Pointer
50 Link Pointer
54 SCSI Phase Sequence (bytes 0-3)
58 SCSI Phase Sequence (bytes 4-7)
5C Status Return Function Pointer
60 Status
64 Termination Transfer Byte Count
68 Error Address
6C SCSI Queue Tag
70-84 Work Area