IBM System/360 20 - 132

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I Code ICause
I Displayed I
I ESTR 1
1-- I
I 0704 1 Error within corrective action.
( 1 A unit-check condition occurred when an attempt was made in
I I the error recovery routine to execute a sense command or a
I I space-block command.
1-- '--+1--
0705 Disaster condition.
During execution of the tape error recovery routine, one of
the following non-correctable conditions has teen encountered:
a) A data error that occurred during the execution of a read
or read-backward command has not teen corrected after 99
re~eated attempts (including 9 tape-cleaning sequences),
and the problem program does not provide for handling a
read error.
b) The execution of a read-backward, backspace-block, or
backspace-file command led to load point or was attempted
at load point.
c) During execution of a command, the tape device concerned
or the tape control unit left ready status ~ower dropped,
or the Reset key was pressed, or the tape ran off the
left-hand reel) .
d) An equipment-check, overrun, er werd-count-zero condition
occurred.
e) An operator-choice condition had ocuIred before this dis-
aster halt, and the operator had considered it a disaster
condi tion.
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0706 Operator-choice condition.
During execution of the tape error recevery routine, a condi-
tion occurred that requires an operator decision. This condi-
tion is one of the following:
a} A write error in a write or write-tapemark operation has
not been corrected after 3 repeated attempts.
b) The tape drive addressed is not attached to the tape con-
trol unit.
c) A write, write-tapemark, or erase operation has been
attempted on a file-protected tape volume.
d) An attempt has been made to set a tape control unit with
7 - t r a c k com pat it iIi t Y f eat u ret e " d a t a can ve r t era n I'
although the unit does not have the data conversion
feature.
e) A bus-out-check condition has not teen corrected after 3
re~eated attempts.
f) An attempt has been made, on a tape drive (one of the
Models 4 through 6) without the NBZI compatibility fea-
I 1 ture, to read a tape written in the NRZI mode.
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IRef.No.1
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I I
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I 46 I
1 I
I I
1 1
I -I
47
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48
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I 0707 I Symbolic device address not assigned er net I 49 I
I I assigned to a tape drive. 1 I
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I 0708 I Device not ready. I I
I I
I/O operation requested on a tape drive that is not ready. I I
t-------+--------- ----II~ 1
I 0710 I Tape drive on which the system tape is mounted is not opera- I 51 I
I I tional during tape 1PL. I I
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I 0711 1 Tape read error during tape 1Ft. PIess S1AFT on the CPU to I I
I Ire-execute 1PL. If the error occurs repeatedly, create a new I I
I I system tape. I I
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132 System/360 Model 20 TPS Operating Procedures