Tandberg Data
Read Buffer
19-6
Tandberg SLR Product Line SCSI Functional Specifications
Buffer ID
Associated Buffer
Buffer Capacity (bytes)
0
Data Buffer
max 1507328 / 8126464
1
1
Static RAM
65536 / 131072
1
2
Media Statistics
variable, 0 – 16384 / 49152
1
3
Microcode Store
max 1048752
4
EEPROM
2048
5
External RAM adapter
max 1048576
6
NVP Data
8186 / 73728
2
/ 139264
3
7
Tape Buffer Control Data
max 16384 / 249856
1
8
Volume Directory
26624
9
Dbase Variables
61440
10
Header File Dates
2048
11
Trace Buffer Control Blocks
6
12
Complete Trace
max 600000
Table 19-5: Buffer Capacity
The Buffer Capacity for Media Statistics tells how much
logging information that is available. It may be
different for each time the READ BUFFER command is
executed.
19.5. Exception Handling
See sections on Error Conditions For All Commands,
Deferred Errors and Buffer Parity Errors.
If the Mode is not in the set of legal modes, the Drive
will terminate the command with CHECK CONDITION. No data
will be transferred. The Drive Error Code will be set to
I
NVALID
F
IELD IN
CDB.
In mode 2 (Read Data), if the value in the Buffer ID
field is not in the range of legal values or the Buffer
Offset is not less than the size of the specified buffer
or the Buffer Offset is not zero when Buffer Id 2 is
selected, the Drive will terminate the command with
CHECK CONDITION. No data will be transferred. The Drive
Error Code will be set to I
NVALID
F
IELD IN
CDB.
In mode 3 (Read Descriptor), if the Buffer Offset field
is not set to zero, the Drive will terminate the command
with CHECK CONDITION. No data will be transferred. The
Drive Error Code will be set to I
NVALID
F
IELD IN
CDB.
1
SLR140, SLR100, SLR75, SLR60, SLR7
2
SLR7
3
SLR140, SLR100, SLR75, SLR60
