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FF (page 31) if it had been cleared and if the Start FF is still set.
Tape motion continues until one of the following events occurs:
(1)
A Stop Function code is sent to the Paper Tape Reader (clearing the
Start FF, page 31).
(2)
A paper Motion Failure occurs (logical "0" at 3l-A15-2l) and Data
Interrupt has not been selected.
(3)
Loss of the feedhole signal (3l-A15-23) and Data Interrupt has not
been selected.
(4)
Loss of the feedhole signal with the Lost Data FF set (3l-A15-6).
It should be noted that under conditions of Lost Data, the previous frame of
information is lost and the second frame is retained in the Holding Register.
To restart the tape reader, both the Data Ready and the Lost Data FFs must be
cleared.
The Data Ready FF clears by a Read signal from the computer or a
Master Clear whereas the Lost Data FF clears due to a Master Clear or a Clear
Interrupt Function.
If a Master Clear is used, two frames of information will
be lost, since the Holding Register is also cleared.
Rev. A
3-6
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