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ERROR IN POLL ADDRESS X
A poll test was sent to the indicated address but was not received
properly. This could be caused by a terminated cable not being properly
installed, a circuit that is non-functioning, or intermittent connections.
INCORRECT DATA ON POLL TO ADDRESS X
A poll was sent to the indicated address and was detected as a poll;
however, the data received was not the expected data. This could be
caused by a problem with the twin-axial receiver circuitry.
NO INTERRUPT ON DATA
A byte of data (not a poll) was sent and the receiver circuitry did not
interrupt the microprocessor. This could be caused by problems in the
receiver circuitry, or problems with the microprocessor interrupts.
OUTPUT DATA AVAILABLE BIT BAD
The transmitter timing is not staying busy for the proper period. This
indicates an ASIC failure.
INPUT DATA AVAILABLE BIT BAD
The bit signaling that data was received was not set as expected. This
could be caused by not having a properly terminated cable attached, a
driver circuitry failure, a receiver circuit failure, or an ASIC failure.
NO INTERRUPT ON BAD PARITY or WRONG INTERRUPT ON BAD
PARITY
This test sends a transmission with the parity purposely invalid to test the
proper reaction. Either no interrupt or the wrong interrupt was received in
this test. This indicates an ASIC failure.
INTERRUPT W/O NMI ON POLL TO ADDRESS X
During a poll test, the transmission was received as data; not as a poll,
This indicates an ASIC failure.
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