Specifications

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Device Failure
Code and Error Significance
27 Device message Illegal device message on 1720 Card
Punch
28 File No file assigned to this logical unit
(pseudo
tape driver)
29 Read A read error occurred in reading the
resident mass-storage driver.
30 Validation The frame punched does not compare
error with the original data, or there was
an echo error
on the 1720-1 Card
Punch. Abort the punch operation.
31 Short record An attempt was made to write a
record with a length less than the
standard noise record length.
32 Tape supply
33 Line break
34 Data interrupt
35 End-of-
operation
36 Reserved
37 Wrong address
38 Not used
39 Not used
96769450 A
Magnetic tape simulator: noise
record. Attempt to
do a zero length
write.
Tape supply
low on the 1720-1 Card
Punch
A line break occurred while attempt-
ing to input on the 361-1 Communi-
cations Adapter.
A
data interrupt occurred after read-
ing
80 columns.
1728-430/1729-2/1729-3/1829-30/60
Card Readers: This error indicates a
hardware failure, possibly due
to im-
proper card travel. Reread the card
(see
the recovery procedure for error
code above).
An end-of-operation interrupt
occurred prior
to reading 80 columns.
1728-430/1729-2/1729-3/1829-30/60
Card Readers: Continuous failures
may indicate card slippage
in feeding.
Reread the card as for error code
4
above •.
The buffered data channel is using
the first word address other than the
address
sent by a buffered driver.
Device Failure
Code and Error
40 Repea ted the
request due
to
an error
41 Incomplete
request
42 Timing error
43 Incomplete
directory call
or overlay read
request
44 Guarded
address
Significance
The driver is attempting recovery.
The request was not successfully
completed. The driver
attempted to
repeat the request the maximum
number of times.
Occurred while drum was busy
Due to irrecoverable
error
Error on write
Magnetic tape simulator:
An attempt
was made to write past the end of the
specified magnetic tape simulator
disk area.
45 Timing Occurred while drum was not busy
46 External reject On output
47 External reject On input
48 Controller The controller address status was not
address the expected value.
49 Drive address
50 No ID
51 Illegal density
52 Power failure
53 EOP
54 Data
The drive address
status was not the
expected value.
ID abort, no ID burst (1732-2, 1732-3)
An attempt was made to select an
illegal density (1732-2, 1732-3) or an
attempt was made to select a density
when the. unit was not
at the load
point.
Power failure on 1752 Drum
End-of-operation not
set after inter-
rupt (1752 Drum)
1829-30/60 Card Reader: no end-of-
operation
status
The data was not set after the inter-
rupt (1752 Drum).
1829-30/60 Card Reader: no data
before end-of-operation.
6-5