Write Combined Header And Data Mode (0) - Tandberg Data SLR7-140 PROGRAMMER Manual

Buffer ID
Buffer Offset
Parameter List
Length
Link
Tandberg Data
Mode Description
0 Write Combined Header and Data
2 Write Data
4 Download Microcode
5 Download Microcode and Save Mode
7 Download Microcode with Offsets and Save Mode
Table 31-2:
This field selects
There are 4 legal values:.
00h : Data Buffer
80h : TD Internal Use
81h : TD Internal Use
82h : TD Internal Use
The Buffer ID MUST be set to zero in Modes 0 and 7. The
Buffer ID field is ignored in Modes 4 and 5
The Buffer Offset
buffer (or microcode load). If the Buffer Offset is set
to N, then the first data byte transferred by the WRITE
BUFFER command will be put into byte N, relative to the
first byte of the buffer.
The Buffer Offset MUST be zero when Mode 0 is selected.
The Buffer Offset plus Parameter List Length MUST NOT
exceeds the capacity of the specified buffer. The capa-
city can be determined through READ BUFFER command.
The Parameter List Length field specifies the number of
bytes that shall
phase. If the Parameter List Length is zero no data will
be transferred.
The Buffer Offset plus Parameter List Length MUST NOT
exceeds the capacity of the specified buffer (four plus
buffer capacity in the case of Mode 0). The capacity can
be determined through READ BUFFER command.
The Link-bit must be set to zero in mode 5 and 7 when
saving of microcode is going to be performed.
See section 4.2. Command Control Byte for the use of the
Link bit in other modes.

31.3. Write Combined Header and Data Mode (0)

This Mode is included solely for backward compatibility.
Data transferred in this mode is preceded by four bytes
header. All four bytes of this header are RESERVED.
31-2 Tandberg SLR Product Line SCSI Functional Specifications
Supported Modes
which buffer that
specifies a byte
be transferred
Write Buffer
receives data.
offset into
during the DATA-OUT
the