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21020285 D User’s Guide
Chapter 6 Target Mode Pass-through Commands
Page 6 - 16 Target Mode Response Command
Flags-1
The Flags-1 byte contains specific controls for the operation of the Target Mode
Response command. The format is as follows:
DIR Direction of Data Transfer - If a data transfer is required to complete
a command, use this bit to inform the adapter of the direction the data is to be
transferred. This bit is only significant if the DAT bit is set to one.
Note
The RF3880 is acting as
a target when executing
a Target Mode Response
command.
0 ⇒ Data transfer is from the initiator.
1 ⇒ Data transfer is to the initiator.
DAT Data Transfer - Use this bit to inform the adapter that the command it
is to perform involves a data transfer. This bit is used by the adapter in
conjunction with the DIR bit.
0 ⇒ Command requires no Data phase.
1 ⇒ A Data phase is required for this command.
TMO Target Mode Operation - This bit distinguishes Target Mode
Response commands from Initiator Mode Pass-through commands
0 ⇒ Initiator Mode Pass-through command
1 ⇒ Target Mode Response command.
ICC Inhibit Command Complete Interrupt - This bit is used to inhibit the
interrupt that would normally notify you that the command has completed.
0 ⇒ Interrupt using the Interrupt level indicated in the Interrupt field of the
Start Command List command, when the command has completed.
1 ⇒ Do not interrupt to indicate command completion.
LUN
When the initiator selected the RF3880, it specified a LUN in its Identify
message. For reselection, this byte contains that same logical unit number
(LUN).
VME Memory Address
When the SCSI operation requested by the initiator that selected the RF3880
involves a data transfer, this field contains the beginning Host memory address
for the transfer. This field is ignored for SCSI transactions that require no
transfer of data.
Transfer Count
Note
A value of zero indicates
a transfer of 4 billion
bytes, and should not be
used.
The value placed in this field indicates the number of bytes to be transferred to
or from Host memory. For some SCSI commands this is an indeterminate
number. In that case, use the number of bytes allocated in Host memory for this
Data area.
BITS
76543210
0 0 ICC TMO 0 DAT DIR 0
Table 50: Bit-meanings of Flags-1 Field
- Rimfire 3880 SCSI Host 1
- Organization 5
- Conventions 7
- Documents 8
- Table of 9
- Contents 9
- Product Overview 21
- About the 22
- Rimfire 3880 22
- Management 23
- What next? 24
- Hardware Essentials 25
- Structure and 27
- Description 27
- Block Diagram 28
- Addressing 29
- Ports: General 30
- Address Buffer 32
- SET 0 0 0 0 WID WSC BSC 33
- Channel 34
- Attention Port 34
- Status Port: 38
- Reset Port 40
- Descriptions of 41
- Port Usage 41
- Hardware Installation 43
- Overview of the 45
- Installation 45
- Step 1: 46
- Unpacking the 46
- Step 2: 47
- Jumpers and 47
- Termination 47
- Configuration 48
- Bus Request/ 49
- Grant Jumper 49
- Addresses 51
- SCSI bus 52
- Step 3: Board 53
- Insertion 53
- Step 4: Apply 54
- Conditions 55
- Step 5: 56
- Configure and 56
- Connect SCSI 56
- Command Operation 59
- What the 61
- Adapter must 61
- The Base 62
- Parameter 62
- Multiple 66
- Status Blocks 66
- 000 0 0 INT ID 68
- Using a Single 69
- Some Example 70
- 2:Inquiry 73
- Pass-through 73
- Command List 76
- Creating the 78
- Using a 79
- Adding a 80
- Removing a 80
- Example ‘C’ 81
- Routines for 81
- Initiator Mode Pass 85
- Initiator Pass 87
- Block Format 87
- DBV 0 ICC 0 IRS DAT DIR 0 88
- Setting DBV 89
- DAT and DIR 89
- Table Values 89
- Table of DAT 90
- Automatic 90
- Settings 90
- 21020285 D User’s Guide 102
- Target Mode Pass 103
- Introduction 104
- Overview of 105
- Target Mode 105
- What must the 106
- Target Mode? 106
- Commands 107
- Special Target 107
- Command 108
- Descriptor 108
- Block Group 108
- Operation 109
- Sequence of 111
- Responding to 111
- Selection Data 112
- Structure 112
- 76543210 113
- CC ERR RTY 0 0 0 0 TME 113
- 0000000SAV 116
- Response 117
- 0 0 ICC TMO 0 DAT DIR 0 118
- Status Block 121
- CC ERR RTY 0 0 CSB 0 TMS 122
- Board-control Commands 125
- Using the 127
- Reference 127
- General Status 128
- List of 129
- Start Command 130
- List (01H) 130
- 1514131211109876543210 131
- 0 0 0 0 0 INT Status/ID 131
- Stop Command 132
- List (02H) 132
- Identify (05H) 133
- Identify 134
- Description of 134
- Statistics (06H) 136
- Statistics Data 138
- General 139
- Options (07H) 139
- Unit Options 142
- 0 0 0 RBE RCE RPE ISB INT 143
- 0 TAG 0 0 WID IAT SYN UNQ 144
- Diagnostic/ 148
- Self-test (09H) 148
- Enable (0AH) 151
- 000 0 0 INT Status/ID 152
- Disable (0BH) 153
- Abort (0DH) 154
- SCSI Hard 155
- Reset (10H) 155
- Information 156
- Data Structure 157
- Extended 165
- Statistics (16H) 165
- Extended Unit 169
- Options (18H) 169
- Options Data 170
- Details of Usage 175
- Byte and Word 177
- Swapping 177
- How to Use 182
- How It Works 183
- Notes on 184
- Usage and 185
- SCSI Protocol 185
- Handling 185
- Routines 188
- Disconnect 189
- Privilege 189
- Error Codes 193
- User’s Guide 21020285 D 195
- Appendix A Error Codes 195
- Summary Page A - 3 195
- Table 116: Error Codes 195
- Appendix A Error Codes 196
- Page A - 4 Summary 196
- Summary Page A - 5 197
- Status Port 198
- Self-test Error 199
- Self-test 199
- Cables and Connectors 201
- Connector 203
- Table 123: P2 Connector 205
- Specifications 207
- Appendix C Specifications 210
- Page C - 4 Specifications 210
- Defaults 211
- Hardware 213
- Appendix D Defaults 216
- Design Differences 217
- Features no 219
- Supported 219
- Implementation 220
- Differences 220
- Maximize 222
- Performance 222
- Index 224
- Page ii 224
- Index 225
- Page iii 225
- Page iv 226
- Page vi 228
- 21020285 D 230
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