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21020285 D User’s Guide
Chapter 5 Initiator Mode Pass-through Commands
Page 5 - 6 Initiator Pass-through Parameter Block Format
Table of DAT
and DIR
Automatic
Settings
The following table demonstrates the values for the DAT and DIR bits that the
RF3880 associates by default with each of the SCSI opcodes:
Opcode DAT DIR Description
00H 0 0 Test Unit Ready
01H 0 0 Rewind/Rezero
02H 0 0 not defined
03H 1 0 Request Sense
04H 1 1 Format Unit
05H 1 0 Read Block Limits
06H 0 0 not defined
07H 1 1 Reassign Blocks
08H 1 0 Read
09H 0 0 not defined
0AH 1 1 Write
0BH 0 0 Seek
0CH 0 0
not defined0DH 0 0
0EH 0 0
0FH 1 0 Read Reverse
10H 0 0 Write Filemarks
11H 0 0 Space
12H 1 0 Inquiry
13H 0 0 Verify
14H 1 0 Recover Buffered Data
15H 1 1 Mode Select
16H 1 1 Reserve
17H 1 1 Release
18H 1 1 Copy
19H 0 0 Erase
1AH 1 0 Mode Sense
1BH 0 0 Start/Stop: Load/Unload
1CH 1 0 Receive Diagnostic
1DH 1 1 Send Diagnostic
1EH 0 0 Prevent/Allow Media Removal
1FH 0 0
not defined
20H 0 0
21H 0 0
22H 0 0
23H 0 0
24H 0 0
25H 1 0 Read Capacity
26H 0 0
not defined
27H 0 0
28H 1 0 Extended Read
29H 0 0 Vendor-unique
2AH 1 1 Extended Write
Table 30: DAT and DIR Automatic Settings