HP 9845B/C CE Service Manual

A-1S HP 9895A Disc Memory Command Set
Stat 2
Bit #
*
15
TTTT 12-9
A
7
W
6
E
4
F
3
c 2
Meaning
Stat 2 error. This bit is set if one or more of the following
bits are
set in stat 2:
1. Drive fault,
2.
Seek check,
3. Any drive not
ready error.
(See code 10011 in Sl table for list of possible causes.)
Disc type. These four bits indicate
the type and format of
the disc currently present in the selected drive as follows:
0000 - Empty drive
0001 - Blank or unknown format, single-sided
0010 - HP format, single-sided
0101 - Blank or unknown format, double-sided
0110 - HP format, double-sided
1000 - IBM format, single-sided
Attention. This bit is set
when a seek completes (success-
fully
or unsuccessfully), or following an End command
when stat 2 changes. It is cleared after the status is read.
Write protected.
The disc in the selected drive has the
write protect notch present.
Drive fault. This bit
is set after the following occurs:
1. Drive goes not ready after End command,
2. Drive goes not
ready during data transfer,
3. Hardware failure.
Drive fault
is cleared after the status is read.
First status bit. This bit is
set when a disc is present in the
selected drive after:
1. Power on,
2.
The door is closed,
3. Self-test completion.
First status is cleared after
the status is read.
Seek check. This bit is set when a seek fails for one or
more of the following reasons:
1. An out-of-bounds target sector was specified,
2.
An attempt was made to access a non-existent phys-
ical track,
3.
The seek algorithm could not find the target logical
track.

HP 9845B/C CE Specifications

General

Brand	HP
Model	9845B/C CE
Category	Storage
Language	English