Buffer Overrun/Underrun Counters Page; Table 13-3: Buffer Overrun/Underrun Counters Page; Table 13-4: Underrun Log Parameters - Tandberg Data SLR7-140 PROGRAMMER Manual

BYTE BIT 7
00 RESERVED
01 RESERVED
02 Page Length = 000Ch
03
04
 Underrun Log Parameters
09
10

Overrun Log Parameters
15
Table 13-3:
Page Code
Page Length
BYTE BIT 7
n+0 RESERVED
n+1 Count Basis
n+2 DU
n+3 Parameter Length = 02h
n+4 Buffer Underrun Counter
n+5
Count Basis
Cause
DU
Tandberg Data
13.3.2.

Buffer Overrun/Underrun Counters Page

6 5
Page Code = 01h
Buffer Overrun/Underrun Counters Page
The Page Code for this page is 01h.
This field is set to 000Ch indicating that the page
parameters occupy 12 bytes.
Underrun Log Parameters
6 5
DS TSD
Table 13-4: Underrun Log Parameters
This field is set to 0, to indicate, that the criteria
for incrementing the counter is undefined.
This field is set to 0, to indicate, that the reason for
underrun is undefined.
A Disable Update (DU) bit set to 0 indicates that the
Drive is free to update the counter.
A DU bit set to 1 indicates that the Drive shall not
update the counter except in response to a LOG SELECT
command that specifies a new value for the counter.
The initiator may use the LOG SELECT command to set or
clear the DU bit.
The Drive will set the DU bit to 1 when the counter
reaches its maximum value (FFFFh).
13-4 Tandberg SLR Product Line SCSI Functional Specifications
4 3
4 3
Cause
ETC TMC
Log Sense
2 1 0
2 1 0
0
R LP