Emerson MVME147 Manuel D’Utilisation
Read Block Limits Packet
7-45
7
Read Block Limits Packet
The read block limits command ($05) returns the maximum and minimum
block size written on the tape. The controllers supported by the SCSI firmware
only support QIC 24 or QIC 11 type blocks which equal 512 ($200) bytes.
block size written on the tape. The controllers supported by the SCSI firmware
only support QIC 24 or QIC 11 type blocks which equal 512 ($200) bytes.
The table below shows the read block limits packet.
Even Byte \
Odd Byte \
FC
B8
74
30
+$00
Controller LUN
Device LUN
+$02
Status Byte 0
Status Byte 1 (Note 1)
+$04
Returned Maximum Block Length (MSW)
+$06
Returned Maximum Block Length (LSW)
+$08
Returned Minimum Block Length
+$0A
0
0
0
0
+$0C
0
0
0
0
+$0E
0
0
0
0
+$10
0
0
0
0
+$12
0
0
0
0
+$14
0
0
Function Code (34)
+$16
Interrupt Level
Vector Number
+$18
Status Byte 2
Status Byte 3 (Note 1)
$00
00000xxx
Controller logical unit
number
number
$01
00000xxx
Device logical unit
number
number
$02
xxxxxxxx
Status from SCSI
firmware (byte 0)
(Note 1)
firmware (byte 0)
(Note 1)
$03
xxxxxxxx
Status from SCSI
firmware (byte 1)
(Note 1)
firmware (byte 1)
(Note 1)