HP 9800 SERIES Service Manual

Identify
Type:
Purpose:
Descri pti on:
HP-IB
Sequence:
ATN
I
P1~111111
Primary
Untalk
DSJ
Type:
Purpose:
Description:
HP 9895A Disc Memory Command Set A-ll
Sense Commands
ATN
IP11ADDRSI
My
Secondary
Sense.
The 9895A will return a code unique to the disc subsystem
to allow for auto-configuration of systems.
Upon the reception of the untalk primary followed by the
secondary corresponding to the 9895A's current HP-IB
address, the 9895A's PHI will respond by sending the ID
bytes of a and 81 hex, the second byte being tagged with
an EO!. These two bytes will continue to be sent until
another command is transmitted on the bus.
I ooo~~ooo I
Byte 1
Sense.
EOI
1
10000001
ID
Byte 2
ATN
I
PllADDRS,
Other
Primary
The 9895A returns a byte indicating if the last operation
completed normally or abnormally, or if the power to the
9895A has just been restored, or if a parity error has been
detected on the HP-IB. The DSJ command also provides a
way to disable the 9895A's parallel poll response.
After accepting the DSJ secondary, the 9895A disables its
parallel poll
response (usually within 100 microseconds)
and returns a byte (the DSJ byte) reflecting the status of
the controller.
DSJ = a - The 9895A completed its last operation nor-
mally.
DSJ = 1 - The 9895A aborted its last operation abnor-
mally. Status will indicate the current error.
DSJ = 2 - The 9895A has just completed a power up se-
quence and is in the DSJ = 2 holdoff state.
DSJ = 3 - A parity error has occurred on the HP-IB.
Repeat the request to receive the pre-parity
error DSJ.

HP 9800 SERIES Specifications

General

Category	Storage
Series	9800 SERIES
Type	Disk Array
Drive Types Supported	SAS, SSD
RAID Levels Supported	0, 1, 5, 6, 10
Host Connectivity	Fibre Channel, iSCSI, SAS
Redundancy	Redundant power supplies and fans