Technical data

UART - Serial Input/Output Tests
http://www.motorola.com/computer/literature 3-89
3
UART Error Messages
The UART test group error messages generally take the following form:
UART BAUD: Baud Rates..............Running ---> FAILED
UART/BAUD Test Failure Data:
Data Miscompare Error:
Address =
XXXXXXXX , Register Index = XX
Expected = XX , Actual = XX
The first line of the test failure data identifies what type of failure occurred.
The following line provides additional information about the failure.
Table 3-16. UART Error Messages
Error Message Symptom or Cause
Unsolicited Exception:
Vector
XX
An unexpected
exception occurred.
Data Miscompare Error:
Address =
XXXXXXXX , Register Index = XX
Expected = XX , Actual = XX
Data write does not
match data read.
Transmit buffer failed to empty: channel %d
Transmitter buffer
remained full.
Time out waiting for transmitter interrupt:channel
XX
During Interrupt testing,
no interrupt was
generated or received.
Baud rate failure, expected %d took %d:channel XX
Measured baud rate was
not the same as that
expected.
Receiver line status interrupt occurred:channel XX
<additional error information>
Data transmission error
occurred. Possible
errors are: framing,
parity, or data overrun.
Unexpected modem status interrupt occurred:channel
XX
An unexpected change
of modem signals was
received during testing.