DLT4000 SCSI Interface
8-126 DLT4000/DLT4500/DLT4700 Cartridge Tape Subsystem
8.4.26 WRITE BUFFER (3Bh)
Bit
7
6
5
4
3
2
1
0
0
Operation Code (3Bh)
1
Logical Unit Number
Reserved
Mode
2
Buffer ID (00h)
Byte
3
(MSB)
4
Buffer Offset (000000h)
5
(LSB)
6
(MSB)
7
Parameter List/Data Length
8
(LSB)
9
Unused
Reserved
Flag
Link
Figure 8-80
WRITE BUFFER CDB
WRITE BUFFER is used with READ BUFFER as a diagnostic function for testing the
device data buffer, DMA engine, SCSI bus interface hardware, and SCSI bus integrity.
It is also used for downloading and updating controller microcode (firmware).
Mode
The drive supports the following values within the field. If any other value is set, the
drive terminates the command with a CHECK CONDITION status and an ILLEGAL
REQUEST sense key set.
Mode
Description
000b
Write combined header and data
010b
Write data
100b
Download Microcode
101b
Download Microcode and Save
Figure 8-81
WRITE BUFFER Modes Supported
For all modes, only a Buffer ID of zero is supported. If the Buffer ID field is nonzero,
the command will be rejected. The target detects and rejects commands that would
overrun the buffer.
8.4.26.1 Header and Data Mode
Содержание DLT 4700
Страница 1: ...DLTTM 4000 DLTTM 4500 DLTTM 4700 Cartridge Tape Subsystem Product Manual...
Страница 2: ......
Страница 3: ...DLTTM 4000 DLTTM 4500 DLTTM 4700 Cartridge Tape Subsystem Product Manual March 10 1996 81 60043 01...
Страница 106: ...Configuring and Operating the DLT4500 Mini Library 4 34 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsytem...
Страница 142: ...Troubleshooting Guide for the DLT4500 DLT4700 Mini Library 6 10 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Страница 160: ...Firmware Update From Tape 7 18 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Страница 215: ...DLT4000 SCSI Interface DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem 8 55...
Страница 304: ...DLT4000 SCSI Interface 8 144 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Страница 336: ...Definition of Vendor Unique Sense Data Information B 4 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Страница 342: ...Sense Key Information C 6 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...
Страница 359: ...Index DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem 7...
Страница 360: ...Index 8 DLT4000 DLT4500 DLT4700 Cartridge Tape Subsystem...