Specifications
Status
Bits
5=1
7=1
8=1
9=1
10=1
11=1
12=1
13=1
14=1
15=1
Status
Alarm
Lost data
Not used
Pari ty error
End-of-tape
Noise record
bypassed
File mark
556
fpi
800
fpi
7 track
Write enable
error
Description
One
of the following errors
occurred: end-of-tape found,
tape mark found, data error,
inoperative during execution,
.overload, program error, or read
command
after
write without an
intervening backspace command.
Timeout or overload.
On
over-
load, the tape moves to the gap.
Timeout includes the runaway
tape error, written data not
under the read head yet, and
attempting to backspace
at
the
beginning of tape.
Parity error, longitudinal redun-
dancy check error, or cyclic
redundancy check error (nine-
track only)
The drive reports the end of
usable tape has been reached.
The file mark has been found.
The hardware supports a
556
frames per inch tape speed.
The hardware supports a
800
frames per inch tape speed.
The hardware supports seven-
track tape;
if
14=0,
the hardware
supports a nine-track tape.
No
write enable ring
is
installed
on
the tape reel, and the write
operation
was
requested.
1832-5
Cassette
Tape
Driver
and
1861
Magnetic
Tape
Transport
(Module
FS2CAS
Present)
.
This is a driver-composed status word.
Status
Bits
0=1
1=1
Status
Ready
Busy
96769450 A
Description
Power is present, the cassette is
loaded, and the interlock is
closed. This bit equals
0 in echo
mode, and the alarm = 1.
The cassette is in the motion
cycle.
Status
Bits
2=1
3=1
4=1
5=1
6=1
7=1
8=1
9=1
10=1
11=1
12=1
13=1
14=1
15=1
Status
Recovered
error
Data
EOP
Alarm
Lost
data
Protected
CRC/format
EOT
Description
The driver reattempted the func-
tion, and the command was exe-
cuted.
Data is available (read) or data
is
needed (write).
End-of-operation; tape motion
has ended.
Not ready, lost data (overflow
during read or underflow during
write), cyclic redundancy check
error, format error, or end of
tape
Overflow
on
read or underflow
on
write
The program protect switch is
set.
The cyclic redundancy check
detected an error or format
error.
The end-of-tape
was
found
on
forward motion.
Load point The beginning-of-tape
was
found
on
reverse motion.
File mark Found file mark
on
read, or
search for mark, or read
after
write
Irrecoverable The driver attempted to re-exe-
error cute the failed operation the
preset number of times. The
operation failed
on
every
attempt.
Overflow Data
was
bypassed.
Side B
Write enable
Track B under read/write head
The tape
is
ready to execute
write commands.
If
module
FS2CAS
is not present, bits 2, 12, 13, 14, and
15
have the meanings given
in
the controller status word.
Status
Bits
2=1
12=1
Status Description
Write enabled Tape ready to execute write
commands
Side A/B Track B under read write
head =
1. Otherwise, side A is
under the read/write head.
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