Enhanced error handling option

The Diagnostics Test Units Application interface consists of adapting all read functions.

• All data reads for the adapter must be verified that the data read is other than all 1s, unless otherwise expected. Any data reads that result in all 1s produce a unique error, which is reported to the Diagnostics application.
• A test unit that expects all 1s as normal operation, because of a particular test's nature, does not report the error until that error is verified by the requesting data as being caused by all 1s.
• Diagnostics application developers and test unit developers must determine jointly a unique error code for enhanced error handling.