Interface Output Test (OTEST)
Use OTEST to test the integrity of the data being output by the signal processor. The command causes 16 words to be output consisting of successive powers of two starting from one.
By verifying whether each output word is correct, you can isolate malfunctioning bits in the interface data bus.
This test is less stringent than the input/output test IOTEST since the input data paths to the processor are not being checked. Typically, the OTEST is performed only when the IOTEST fails to determine whether the fault was on input or output.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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| | | | | | | | | | | | | | | | |
| | 0 0 1 0 1 | Command
|-------------------------------------------|-------------------| 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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| | | | | | | | | | | | | | | | |
| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 | Output 1
|---------------------------------------------------------------| 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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| | | | | | | | | | | | | | | | |
|1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 | Output 16
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