Specifications

Device Failure
Code and Error
55 Status
56 Mass memory
buffer expired
57 Buffer transfer
58 Not used
59 PE lost data
60 megaltape
motion request
61 Interrupt
status bit
62 ADT
63 Busy after
EOP
64 Not busy
65 No interrupt
selected
66 Memory
address
67 Not used
68 Interrupt
status bit
69 Initialization
not enabled
70 Connect
6-6
Significance
Bad
status (an indeterminate error
occurred on 1752)
No more buffer space is available
(software buffer driver).
A mass memory error
on the buffer
transfer, which is detected
in the
software buffer driver.
An error occurred in the phase en-
code formatter
that affected the
data transfer.
An illegal tape motion request was
made
to the magnetic tape simulator.
1833-5 Flexible Disk: The interrupt
should not be
set when the initial
status is taken.
1829-30/60 Card Reader: no inter-
rupt status indication
1833-5 Flexible Disk: same
1829-30/60 Card Reader: B.uto-data
transfer fault status
1829-30/60 Card Reader: still busy
after end-of-operation occurs
1829-30/60 Card Reader: not busy
before end-of-operation occurs
1833-5/1865-1 Flexible Disk:
no
interrupt select status bit when the
interrupt occurred
1833-5/1865-1 Flexible Disk: The
direct memory access memory
address fault or A/Q transfer
attemp-
ted to cross a bank boundary or the
direct memory access
attempted to
cross a bank boun~ary without
priming the request (motion request
of code
= 1).
1833-5/1865-1 Flexible Disk: The
interrupt status bit was not
set when
the interrupt occurred.
1833-5/1865-1 Flexible Disk: The
disk initialization switch was not
set.
1833-1 Disk: failure to connect to
the control unit or drive
after a
maximum number of retries.
Device Failure
Code and Error
71 ECC
72 Ghost interrupt
73 Force release
74 Transfer length
75 Transfer
76 Recovery
indicator
77 Expected reject
did not occur
78 Transfer
79 Unit busy
80 Unit seeking
81 Unit doing
input/output
82 CU
83 Main memory
Significance
1833-1 Disk: The error correction
code could not
correct the error,
since too many error bits were gener-
ated.
1833-1 Disk:
An unexpected inter-
rupt was received.
1833-1 Disk: A force release was
required but the disk was not released
(multiple disk adapter system).
1833-1 Disk: The
data transfer was
longer than requested.
1833-1 Disk: The data transfer was
not accomplished
after the maximum
number of retries.
1833-5/1865-1 Flexible Disk:
An in-
formative error was logged
in the
engineering file
to indicate recovery
has been performed
on this device a
specific number of times. The
threshold value for the error is con-
tained
in word 43 of the physical
device table for this unit.
1833-5/1865-1 Flexible Disk (diag-
nostic logic unit only):
An illegal
function was issued but did not cause
a reject.
1833-5/1865-1 Flexible Disk: The
number of words transferred was not
correct or the spindle speed during
initialization of the disk was more
than 3.5 percent
off the normal
value.
1833-5/1865-1 Flexible Disk: The
unit is busy
at the time the input/out-
put request is
attempted.
1833-5/1865-1 Flexible Disk: The
unit is seeking when
the input/output
request is attempted.
1833-5/1865-1 Flexible Disk: The
unit is doing input/output when the
input/output request is
attempted.
1833-1 Disk: error in 1833-3 Control
Unit
1833-1 Disk: The disk adapter
attempted
to address a nonexistent
central processing unit memory
address.
96769450 A