Device Capabilities page (1Fh)
The Device Capabilities Page defines the characteristics of the element types used by this medium
changer. The initiator cannot change this information.
Bit 7 6 5 4 3 2 1 0
Byte
0 Reserved SPF (0) Page Code (1Fh)
1 Additional Page Length (12h)
2
Reserved DT I/E ST MT
(1) (1) (1) (0)
3 Reserved ACE VTRP S2C
4
MT→RA Reserved MT→DT MT→I/E MT→ST MT→MT
(0) (1) (1) (1) (0)
5
ST→RA Reserved ST→DT ST→I/E ST→ST ST→MT
(0) (1) (1) (1) (0)
6
I/E→RA Reserved I/E→DT I/E→I/E I/E→ST I/E→MT
(0) (1) (0) (1) (0)
7
DT→RA Reserved DT→DT DT→I/E DT→ST DT→MT
(0) (1) (1) (1) (0)
8 - 11 Reserved
12
MT→WA Reserved MT↔DT MT↔I/E MT↔ST MT↔MT
(0) (0) (0) (0) (0)
13
ST→WA Reserved ST↔DT ST↔I/E ST↔ST ST↔ST
(0) (0) (0) (0) (0)
14
I/E→WA Reserved I/E↔DT I/E↔I/E I/E↔ST I/E↔ST
(0) (0) (0) (0) (0)
15
DT→WA Reserved DT↔DT DT↔I/E DT↔ST DT↔ST
(0) (0) (0) (0) (0)
16 -
19
Reserved
Field descriptions:
DT: Data Transfer. The value for this field is 1. Tape drives can store cartridges.
I/E: Import/Export. The value for this field is 1. The Import/Export element can store cartridges.
ST: Storage. The value reported for this field is 1. The storage elements can store cartridges.
MT: Medium Transport. The value for this field is 0. The medium transport element cannot store
cartridges.
S2C: SMC-2 Capabilities field is set to 1. This bit indicates that this page supports the new VRTP, ACE,
XX-RA, and XX-WA fields.
VTRP: Volume Tag Reader Present. When set this bit indicates that the library does have a bar code
reader. When set to zero the library does not have a bar code reader.
ACE: Auto Clean Enabled. When set to one, the library shall automatically clean the data transfer
element. When set to zero the library does not automatically clean the data transfer element.
3-26 TL2000 and TL4000 SCSI Reference
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