Write Buffer; Command Description; Command Descriptor Block - Tandberg Data SLR7-140 PROGRAMMER Manual

31.
BYTE BIT 7
00 Operation Code 3Bh
01 Logical Unit Number (LUN)
02 Buffer ID
03 Buffer Offset
04
05
06 Parameter List Length
07
08
09 X
Table 31-1:
Mode

Write Buffer

31.1. Command Description

The WRITE BUFFER command is used in conjunction with the
READ BUFFER command as a diagnostic function for testing
the Drive's data
Additional modes are provided for downloading and saving
of microcode.
The WRITE BUFFER
during the DATA-OUT phase of the command.
The WRITE BUFFER command will only be accepted when
there is no installed
cartridge is
restriction is included to make sure that the WRITE
BUFFER command will not alter the status of a possibly
inserted cartridge in any way. The Initiator may issue a
REWIND command ahead of a WRITE BUFFER command to make
sure that the cartridge is logically positioned at BOP.
If disconnection is allowed, the Drive disconnects when
executing this
total data transfer will be split into smaller bursts
with a maximum size. The maximum burst size (the amount
of data transferred between reconnects/disconnects) is
controlled by the Maximum Burst Size parameter set up by
the MODE SELECT command.

31.2. Command Descriptor Block

6 5
X RESERVED
WRITE BUFFER Command Descriptor Block
This field controls the function of the WRITE BUFFER
command. It also
fields within
following modes are supported:
31-1 Tandberg SLR Product Line SCSI Functional Specifications
buffer and the
Parameter List
cartridge
logically positioned
command. When transferring
4 3
RESERVED
controls the
this command descriptor
SCSI-bus integrity.
will be transferred
or if an installed
at BOP.
data,
2 1
Mode
Flag
meaning of the
block.
This
the
0
Link
other
The